<?xml version="1.0"?>
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	<id>https://demosdev.physics.uottawa.ca/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Srobinea</id>
	<title>PhyLab - User contributions [en]</title>
	<link rel="self" type="application/atom+xml" href="https://demosdev.physics.uottawa.ca/w/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=Srobinea"/>
	<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/wiki/Special:Contributions/Srobinea"/>
	<updated>2026-04-15T03:55:46Z</updated>
	<subtitle>User contributions</subtitle>
	<generator>MediaWiki 1.34.1</generator>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Glass_bottle_flute&amp;diff=1105</id>
		<title>Glass bottle flute</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Glass_bottle_flute&amp;diff=1105"/>
		<updated>2018-05-03T21:41:20Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[3C_-_Acoustics|3C - Acoustics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 3C20.25&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Blowing across the lip of a glass coke or beer bottle partially filled with liquid creates a sound due to resonance within the bottle cavity.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*glass bottle&lt;br /&gt;
*strong lungs&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Partially fill the bottle with water and gently blow across the lip of the bottle. The tone will depend on the size of the cavity within the bottle.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
beer, bottle, coke, water, resonance, cavity&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:3C20.25.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:3C20.25.JPG&amp;diff=1104</id>
		<title>File:3C20.25.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:3C20.25.JPG&amp;diff=1104"/>
		<updated>2018-05-03T21:38:53Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: Glass bottle flute&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Glass bottle flute&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1103</id>
		<title>Hinged stick and ball</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1103"/>
		<updated>2018-05-03T21:07:11Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[1Q_-_Rotational_Dynamics|1Q - Rotational Dynamics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1Q20.50&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A ball on the end of a hinged stick falls into a cup mounted on the stick. Also known as &amp;quot;faster than gravity&amp;quot; or &amp;quot;falling chimney&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*wooden pieces attached with the hinge&lt;br /&gt;
*stick&lt;br /&gt;
*ball&lt;br /&gt;
*bubble level (optional)&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Use the stick to separate the two pieces of wood at an angle and place the ball on top of the tee. Swiftly remove the stick by grabbing or hitting it and the ball should fall directly into the cup as the two pieces of wood collide.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
hinged stick, ball, cup, faster than gravity, falling chimney&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1Q20.50_1.JPG|Figure1&lt;br /&gt;
File:1Q20 50 3-1.JPG|Figure2&lt;br /&gt;
File:1Q20_50_5.JPG|Figure3&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=QRFLOZZXtow}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1102</id>
		<title>Hinged stick and ball</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1102"/>
		<updated>2018-05-03T21:05:04Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[1Q_-_Rotational_Dynamics|1Q - Rotational Dynamics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1Q20.50&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A ball on the end of a hinged stick falls into a cup mounted on the stick. Also known as &amp;quot;faster than gravity&amp;quot; or &amp;quot;falling chimney&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*wooden pieces attached with the hinge&lt;br /&gt;
*stick&lt;br /&gt;
*ball&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Use the stick to separate the two pieces of wood at an angle and place the ball on top of the tee. Swiftly remove the stick by grabbing or hitting it and the ball should fall directly into the cup as the two pieces of wood collide.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
hinged stick, ball, cup, faster than gravity, falling chimney&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1Q20.50_1.JPG|Figure1&lt;br /&gt;
File:1Q20 50 3-1.JPG|Figure2&lt;br /&gt;
File:1Q20_50_5.JPG|Figure3&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=QRFLOZZXtow}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1101</id>
		<title>Hinged stick and ball</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1101"/>
		<updated>2018-05-03T20:57:11Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[1Q_-_Rotational_Dynamics|1Q - Rotational Dynamics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1Q20.50&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A ball on the end of a hinged stick falls into a cup mounted on the stick. Also known as &amp;quot;faster than gravity&amp;quot; or &amp;quot;falling chimney&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*wooden pieces attached with the hinge&lt;br /&gt;
*stick&lt;br /&gt;
*ball&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Use the stick to separate the two pieces of wood at an angle and place the ball on top of the tee. Swiftly remove the stick by grabbing or hitting it and the ball should fall directly into the cup as the two pieces of wood collide.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
hinged stick, ball, cup, faster than gravity, falling chimney&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1Q20.50_1.JPG|Figure1&lt;br /&gt;
File:1Q20 50 3-1.JPG|Figure2&lt;br /&gt;
File:1Q20_50_5.JPG|Figure3&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_5.JPG&amp;diff=1100</id>
		<title>File:1Q20 50 5.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_5.JPG&amp;diff=1100"/>
		<updated>2018-05-03T20:55:45Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: (Hinged stick and ball)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;(Hinged stick and ball)&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1099</id>
		<title>Hinged stick and ball</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Hinged_stick_and_ball&amp;diff=1099"/>
		<updated>2018-05-03T20:46:22Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[1Q_-_Rotational_Dynamics|1Q - Rotational Dynamics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1Q20.50&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A ball on the end of a hinged stick falls into a cup mounted on the stick. Also known as &amp;quot;faster than gravity&amp;quot; or &amp;quot;falling chimney&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*wooden pieces attached with the hinge&lt;br /&gt;
*stick&lt;br /&gt;
*ball&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Use the stick to separate the two pieces of wood at an angle and place the ball on top of the tee. Swiftly remove the stick by grabbing or hitting it and the ball should fall directly into the cup as the two pieces of wood collide.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
hinged stick, ball, cup, faster than gravity, falling chimney&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1Q20.50_1.JPG|Figure1&lt;br /&gt;
File:1Q20 50 3-1.JPG|Figure2&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1098</id>
		<title>File:1Q20 50 3-1.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1098"/>
		<updated>2018-05-03T20:23:48Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: uploaded a new version of &amp;amp;quot;File:1Q20 50 3-1.JPG&amp;amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;(Hinged stick and ball)&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1097</id>
		<title>File:1Q20 50 3-1.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1097"/>
		<updated>2018-05-03T20:23:08Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: uploaded a new version of &amp;amp;quot;File:1Q20 50 3-1.JPG&amp;amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;(Hinged stick and ball)&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1096</id>
		<title>File:1Q20 50 3-1.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20_50_3-1.JPG&amp;diff=1096"/>
		<updated>2018-05-03T20:20:54Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: (Hinged stick and ball)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;(Hinged stick and ball)&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20.50_1.JPG&amp;diff=1095</id>
		<title>File:1Q20.50 1.JPG</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=File:1Q20.50_1.JPG&amp;diff=1095"/>
		<updated>2018-05-03T20:17:54Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: uploaded a new version of &amp;amp;quot;File:1Q20.50 1.JPG&amp;amp;quot;&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Hinged stick and ball&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1094</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1094"/>
		<updated>2018-04-30T17:53:11Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Monkey (Metal plate in front of his body is for hearing the sound of impact)&lt;br /&gt;
* Projectile Launcher (barrel modified for a 3/8&amp;quot; ball bearing)&lt;br /&gt;
* Arduino Uno&lt;br /&gt;
* Electromagnet&lt;br /&gt;
* &amp;quot;C&amp;quot; clamp with post&lt;br /&gt;
* 2 quick-grip&lt;br /&gt;
* Power cord&lt;br /&gt;
* Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1093</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1093"/>
		<updated>2018-04-30T17:48:46Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Projectile Launcher (barrel modified for a 3/8&amp;quot; ball bearing)&lt;br /&gt;
* Arduino Uno&lt;br /&gt;
* Electromagnet&lt;br /&gt;
* &amp;quot;C&amp;quot; clamp with post&lt;br /&gt;
* 2 quick-grip&lt;br /&gt;
* Monkey (Metal plate in front of his body is for hearing the sound of impact)&lt;br /&gt;
* Power cord&lt;br /&gt;
* Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Torricelli%27s_tank&amp;diff=1092</id>
		<title>Torricelli's tank</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Torricelli%27s_tank&amp;diff=1092"/>
		<updated>2018-04-27T16:00:04Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[2C - Dynamics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2C10.10&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Water streams from holes at different heights in a vertical acrylic tube.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Long acrylic tube with 3 holes&lt;br /&gt;
* Water&lt;br /&gt;
* Food coloring&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
3 holes, acrylic tube, water, food coloring, pressure&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Torricelli%27s_tank&amp;diff=1091</id>
		<title>Torricelli's tank</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Torricelli%27s_tank&amp;diff=1091"/>
		<updated>2018-04-27T15:52:49Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[2C - Dynamics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2C10.10&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Water streams from holes at different heights in a vertical acrylic tube.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Long acrylic tube with 3 holes&lt;br /&gt;
* Water&lt;br /&gt;
* Food coloring&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
3 holes, acrylic tube, water, food coloring&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Cup_and_weights&amp;diff=1090</id>
		<title>Cup and weights</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Cup_and_weights&amp;diff=1090"/>
		<updated>2018-04-27T15:48:59Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Description */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1G - Newton's Second Law]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1G20.40&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Hang 2 x 200 g weights from heavy rubber bands extending from the center over the edge of a styrofoam bucket with a 200g under the cup to keep the balance. Drop the thing.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*styrofoam cup&lt;br /&gt;
*Two identical weights&lt;br /&gt;
*Rubber band&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
acceleration, cup, weight, rubber band, styrofoam cup&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1G20.40 01.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Cup_and_weights&amp;diff=1089</id>
		<title>Cup and weights</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Cup_and_weights&amp;diff=1089"/>
		<updated>2018-04-27T15:47:06Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1G - Newton's Second Law]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1G20.40&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Hang 1 kg weights from heavy rubber bands extending from the center over the edge of a styrofoam bucket. Drop the thing&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*styrofoam cup&lt;br /&gt;
*Two identical weights&lt;br /&gt;
*Rubber band&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
acceleration, cup, weight, rubber band, styrofoam cup&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1G20.40 01.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1088</id>
		<title>Discharging with a flame</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1088"/>
		<updated>2018-04-27T15:40:46Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[5A - Electrostatics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 5A10.??&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A flame produces an ionized gas that will capture charges of nearby objects if available&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* [[Braun Electroscope]]&lt;br /&gt;
* Candle&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
candle, Braun Electroscope, flame, discharging charge, electrophorus.&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:5A10 CandleandElectroscope01.jpg&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=EPx-oT1E4SY}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Triboelectric_effect&amp;diff=1087</id>
		<title>Triboelectric effect</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Triboelectric_effect&amp;diff=1087"/>
		<updated>2018-04-27T15:39:51Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[5A_-_Electrostatics|5A - Electrostatics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 5A10.10&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
Some material holds on to their electron better than others. Therefore, rubbing different materials together can cause a transfer of charge between them. The direction of the transfer of charge depends on the material, the surfaces shape, temperature and strain. The effect is consistent between two specific objects, but is not very predictable in general.  &lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Piece of material that gives their electron easily: fur, glass, wool, etc&lt;br /&gt;
* Piece of material that doesn't give their electron easily: plastic, styrofoam, rubber, etc.&lt;br /&gt;
* Electroscope &lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
* Bring each object close to the electroscope to show their neutrality&lt;br /&gt;
* Rub the two object together.&lt;br /&gt;
* Bring each of them close to an electroscope to show the charge the gathered.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
electrophorus,electroscope, fur, rubber.&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:IMG 2492.JPG&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=NNZO5Z4uJAI}}&lt;br /&gt;
{{#widget:YouTube|id=mUTm7nOr4fg}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1086</id>
		<title>Discharging with a flame</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1086"/>
		<updated>2018-04-27T15:33:46Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[5A - Electrostatics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 5A10.??&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A flame produces an ionized gas that will capture charges of nearby objects if available&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* [[Braun Electroscope]]&lt;br /&gt;
* Candle&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
candle, Braun Electroscope, flame, discharging charge&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:5A10 CandleandElectroscope01.jpg&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=EPx-oT1E4SY}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1085</id>
		<title>Discharging with a flame</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1085"/>
		<updated>2018-04-27T15:32:23Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[5A - Electrostatics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 5A10.??&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A flame produces an ionized gas that will capture charges of nearby objects if available&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* [[Braun Electroscope]]&lt;br /&gt;
* Candle&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
candle, Braun Electroscope, flame, discharging&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:5A10 CandleandElectroscope01.jpg&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=EPx-oT1E4SY}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1084</id>
		<title>Discharging with a flame</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Discharging_with_a_flame&amp;diff=1084"/>
		<updated>2018-04-27T15:25:49Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[5A - Electrostatics]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 5A10.??&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A flame produces an ionized gas that will capture charges of nearby objects if available&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* [[Braun Electroscope]]&lt;br /&gt;
* Candle&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
candle,  Van de Graaff generator, Braun Electroscope, flame, discharging&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:5A10 CandleandElectroscope01.jpg&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=EPx-oT1E4SY}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1083</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1083"/>
		<updated>2018-04-26T14:20:20Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
* Projectile Launcher (barrel modified)with 3/8&amp;quot; ball bearing&lt;br /&gt;
* Arduino Uno&lt;br /&gt;
* Electromagnet&lt;br /&gt;
* &amp;quot;C&amp;quot; clamp with post&lt;br /&gt;
* 2 quick-grip&lt;br /&gt;
* Monkey (Metal plates on his head and in front of his body)&lt;br /&gt;
* Power cord&lt;br /&gt;
* Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1082</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1082"/>
		<updated>2018-04-25T20:20:43Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Projectile Launcher (barrel modified)with 3/8&amp;quot; ball bearing&lt;br /&gt;
*Arduino Uno&lt;br /&gt;
*Electromagnet&lt;br /&gt;
*&amp;quot;C&amp;quot; clamp with post&lt;br /&gt;
*Monkey (Metal plates on his head and in front of his body)&lt;br /&gt;
*Power cord&lt;br /&gt;
*Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1081</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1081"/>
		<updated>2018-04-25T20:11:32Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Double cylindrical tube setup&lt;br /&gt;
*Vacuum pump&lt;br /&gt;
*Flexible 3/8&amp;quot; diameter hose&lt;br /&gt;
*Power cord&lt;br /&gt;
*Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1080</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1080"/>
		<updated>2018-04-25T20:09:57Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Double cylindrical tube setup&lt;br /&gt;
*Vacuum pump&lt;br /&gt;
*Flexible 3/8&amp;quot; diameter hose&lt;br /&gt;
*Power cord&lt;br /&gt;
*Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1D60.30_1.JPG|Figure1&lt;br /&gt;
File:1D60.30_2.JPG|Figure2&lt;br /&gt;
File:1D60.30_3.JPG|Figure3&lt;br /&gt;
File:1D60.30_4.JPG|Figure4&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1079</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1079"/>
		<updated>2018-04-25T20:08:58Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Double cylindrical tube setup&lt;br /&gt;
*Vacuum pump&lt;br /&gt;
*Flexible 3/8&amp;quot; diameter hose&lt;br /&gt;
*Power cord&lt;br /&gt;
*Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
/File:1D60.30_1.JPG|Figure1&lt;br /&gt;
/File:1D60.30_2.JPG|Figure2&lt;br /&gt;
/File:1D60.30_3.JPG|Figure3&lt;br /&gt;
/File:1D60.30_4.JPG|Figure4&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1078</id>
		<title>Monkey and hunter</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Monkey_and_hunter&amp;diff=1078"/>
		<updated>2018-04-25T20:05:56Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Images &amp;amp; Movies */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D60.30&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A hunter spies a monkey in a tree, takes aim, and fires. At the moment the bullet leaves the gun the monkey lets go of the tree branch and drops straight down. Does the hunter's bullet hit the monkey?&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
To simulate this experiment, a ballbearing is aimed upwards at a suspended metal disc. When the ballbearing is shot, the disc is released. The ballbearing will hit the disc because their vertical acceleration is equal.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Double cylindrical tube setup&lt;br /&gt;
*Vacuum pump&lt;br /&gt;
*Flexible 3/8&amp;quot; diameter hose&lt;br /&gt;
*Power cord&lt;br /&gt;
*Power bar&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Intruct please.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
monkey, fall, ballbearing, shoot, disc, acceleration, vertical, projectile&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1D60.30_1.JPG|Figure1&lt;br /&gt;
File:1D60.30_2.JPG|Figure2&lt;br /&gt;
File:1D60.30_3.JPG|Figure3&lt;br /&gt;
File:1D60.30_4.JPG|Figure4&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
&lt;br /&gt;
{{#widget:YouTube|width=600|height=337|id=qp6xGXTCmSo}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=695</id>
		<title>Massive weight in a boat</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=695"/>
		<updated>2016-11-10T20:09:23Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Description */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[2B_-_Statics_of_fluids|2B - Statics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2B40.26&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A boat with a massive weight is submerged to a greater depth in water.&lt;br /&gt;
&amp;lt;br&amp;gt;or/and&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
the anchor boat move more water in boat than in the water.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*plastic bowl&lt;br /&gt;
*4L beaker&lt;br /&gt;
*water&lt;br /&gt;
*donut-shaped heavy disc&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Place plastic bowl in the beaker of water. Slowly insert the weight into the bowl without tipping it over. The &amp;quot;boat&amp;quot; will slowly sink but will stay afloat on the water's surface.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
boat, weight, anchor, depth, buoyancy&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:2B40.26_1.JPG|Figure1&lt;br /&gt;
File:2B40.26_2.JPG|Figure2&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=bLcRRbY385o}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=694</id>
		<title>Massive weight in a boat</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=694"/>
		<updated>2016-11-10T20:08:44Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Description */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[2B_-_Statics_of_fluids|2B - Statics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2B40.26&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A boat with a massive weight is submerged to a greater depth in water.&lt;br /&gt;
or/and&lt;br /&gt;
&amp;lt;br&amp;gt;&lt;br /&gt;
the anchor boat move more water in boat than in the water.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*plastic bowl&lt;br /&gt;
*4L beaker&lt;br /&gt;
*water&lt;br /&gt;
*donut-shaped heavy disc&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Place plastic bowl in the beaker of water. Slowly insert the weight into the bowl without tipping it over. The &amp;quot;boat&amp;quot; will slowly sink but will stay afloat on the water's surface.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
boat, weight, anchor, depth, buoyancy&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:2B40.26_1.JPG|Figure1&lt;br /&gt;
File:2B40.26_2.JPG|Figure2&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=bLcRRbY385o}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=693</id>
		<title>Massive weight in a boat</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=693"/>
		<updated>2016-11-10T20:07:18Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Description */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[2B_-_Statics_of_fluids|2B - Statics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2B40.26&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A boat with a massive weight is submerged to a greater depth in water.&lt;br /&gt;
or/and&lt;br /&gt;
 the anchor boat move more water in boat than in the water.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*plastic bowl&lt;br /&gt;
*4L beaker&lt;br /&gt;
*water&lt;br /&gt;
*donut-shaped heavy disc&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Place plastic bowl in the beaker of water. Slowly insert the weight into the bowl without tipping it over. The &amp;quot;boat&amp;quot; will slowly sink but will stay afloat on the water's surface.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
boat, weight, anchor, depth, buoyancy&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:2B40.26_1.JPG|Figure1&lt;br /&gt;
File:2B40.26_2.JPG|Figure2&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=bLcRRbY385o}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=692</id>
		<title>Massive weight in a boat</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Massive_weight_in_a_boat&amp;diff=692"/>
		<updated>2016-11-10T16:24:08Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Description */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
&lt;br /&gt;
Back to [[2B_-_Statics_of_fluids|2B - Statics of fluids]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 2B40.26&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A boat with a massive weight is submerged to a greater depth in water.&lt;br /&gt;
or/and&lt;br /&gt;
The anchor boat move more water in boat than in the water.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*plastic bowl&lt;br /&gt;
*4L beaker&lt;br /&gt;
*water&lt;br /&gt;
*donut-shaped heavy disc&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
Place plastic bowl in the beaker of water. Slowly insert the weight into the bowl without tipping it over. The &amp;quot;boat&amp;quot; will slowly sink but will stay afloat on the water's surface.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
boat, weight, anchor, depth, buoyancy&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:2B40.26_1.JPG|Figure1&lt;br /&gt;
File:2B40.26_2.JPG|Figure2&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=bLcRRbY385o}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=691</id>
		<title>Whirligig</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=691"/>
		<updated>2016-11-09T22:00:23Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Equipment */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D50.20&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A light ball and heavy mass are attached together by a string in a clear tube. When the lighter ball is spun around, it lifts the heavier mass.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Whirligig (ball (6.5g) and mass (50g) attached by string in clear tube)&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
With the lighter ball on top, start spinning the whirligig slowly. The tension in the string will cause the heavier mass to rise.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
ball, mass, 50g, tube, spin, lift, acceleration, tension&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1D50.20_1.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=pTvcA4yapag}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=690</id>
		<title>Whirligig</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=690"/>
		<updated>2016-11-09T21:58:20Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D50.20&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A light ball and heavy mass are attached together by a string in a clear tube. When the lighter ball is spun around, it lifts the heavier mass.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Whirligig (ball and mass attached by string in clear tube)&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
With the lighter ball on top, start spinning the whirligig slowly. The tension in the string will cause the heavier mass to rise.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
ball, mass, 50g, tube, spin, lift, acceleration, tension&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1D50.20_1.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=pTvcA4yapag}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=689</id>
		<title>Whirligig</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Whirligig&amp;diff=689"/>
		<updated>2016-11-09T21:57:52Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Keywords */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;__NOTOC__&lt;br /&gt;
Back to [[1D_-_Motion_in_two_dimensions|1D - Motion in two dimensions]]&amp;lt;br&amp;gt;&lt;br /&gt;
PIRA index: 1D50.20&lt;br /&gt;
&lt;br /&gt;
==Description==&lt;br /&gt;
A light ball and heavy mass are attached together by a string in a clear tube. When the lighter ball is spun around, it lifts the heavier mass.&lt;br /&gt;
&lt;br /&gt;
==Equipment==&lt;br /&gt;
*Whirligig (ball and mass attached by string in clear tube)&lt;br /&gt;
&lt;br /&gt;
==Instructions==&lt;br /&gt;
With the lighter ball on top, start spinning the whirligig slowly. The tension in the string will cause the heavier mass to rise.&lt;br /&gt;
&lt;br /&gt;
==Keywords==&lt;br /&gt;
ball, mass, 500g, tube, spin, lift, acceleration, tension&lt;br /&gt;
&lt;br /&gt;
==Images &amp;amp; Movies==&lt;br /&gt;
&amp;lt;gallery&amp;gt;&lt;br /&gt;
File:1D50.20_1.JPG|Figure1&lt;br /&gt;
&amp;lt;/gallery&amp;gt;&lt;br /&gt;
{{#widget:YouTube|id=pTvcA4yapag}}&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
	<entry>
		<id>https://demosdev.physics.uottawa.ca/w/index.php?title=Main_Page&amp;diff=688</id>
		<title>Main Page</title>
		<link rel="alternate" type="text/html" href="https://demosdev.physics.uottawa.ca/w/index.php?title=Main_Page&amp;diff=688"/>
		<updated>2016-09-26T18:41:23Z</updated>

		<summary type="html">&lt;p&gt;Srobinea: /* Borrowing a demonstration for a lecture */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;'''Welcome to the University of Ottawa Physics Demonstration wiki page!'''&lt;br /&gt;
&lt;br /&gt;
== Browsing demonstrations ==&lt;br /&gt;
Lecture physics demonstrations available at the university of Ottawa can be found on this site.  They are sorted following the [http://physicslearning.colorado.edu/bib/bibMain.asp PIRA Demonstration Classification Scheme] (see the list of topics on the left side of the page).  You can also use our search engine located at the top of this page.&lt;br /&gt;
&lt;br /&gt;
== Borrowing a demonstration for a lecture ==&lt;br /&gt;
If you need to borrow a demonstration for your class, please contact the 1st year laboratory staff in person at MCD 205, by phone at x6766 or x7614, or [mailto:phylab@uottawa.ca by email] at least 48 hours before your lecture.&lt;/div&gt;</summary>
		<author><name>Srobinea</name></author>
		
	</entry>
</feed>