Chapter 6 Trigonometric Identities
Section 6.1 Reciprocal, Quotient, and Pythagorean Identities
Section 6.1
Page 296
Question 1
cos x
, non-permissible values occur when sin x = 0.
sin x
sin x = 0 at x = 0, , 2 ,
Therefore, x
n, where n I.
a) For
cos x
s

Every formal lab you write in this course should include the sections below, in the
order given. Make sure you know what youre expected to include in each!
Purpose
What do you hope to measure in this lab?

Saurav Adhikari & Ali Naveed
J.J Thompsons Experiment
Purpose:
To determine the charge to mass ratio of electrons experimentally, as these values
were unknown during the late 1800s when J.J Thompson conducted this
experiment.
Hypothesis:
Electron
Mass (me

Materials:
3 pith balls as electron
String/Thread
Ruler & Tape
Toothpicks
Lined paper
Retort Stands & Clamps
Van de Graff generator
Sources of error:
1. Some of the charge was lost while we were transporting the pith balls and the time spent between
the e

Problem
What is the speed of sound in air?
Variables
The universal wave equation relates the speed (v) of a wave to its frequency (f ) and wavelength
(_). The wavelength is determined from the length of the pipe (l ) and the number of the resonant
point a

Physics 20 Names: Saurav Adhikari & Amritpal Minhas
Date: April 22, 2014
Period: _4_
Centripetal Force Labs
/30
Problem: Find the relationships between Centripetal force Fc (tension) and
a) mass being rotated m
b) speed of rotation v
c) radius r
Backgroun

You will need to do a lot of testing and adjusting in order to perfect your vehicle. This is why testing is so
important, you will not know what the problems are with your design until you experiment with your
vehicle and see how it performs. Making small

Speed and Radius Constant
Change Mass
Test 1
MV
CV
CV
RV
Mass (kg)
Speed (m/s)
Radius (m)
Fc (N)
1
20
8
50
2
20
8
100
3
20
8
150
4
20
8
200
5
20
8
250
Fc vs. Mass Graph
300
250
200
Centripetal Force (N)
150
100
50
0
1
2
3
4
5
Mas s (kg )
Mass and Radius C

Saurav Adhikari & Amritpal Minhas
Centripetal Force Lab
1. Explain centripetal force and centripetal acceleration.
Centripetal force (Fc): It is a force that acts on a body moving along a circular
path and is directed toward the center around which the bo

08-PearsonPhys20-Chap08
7/24/08
2:23 PM
Page 421
Required Skills
Initiating and Planning
Performing and Recording
Analyzing and Interpreting
Communication and Teamwork
8-7 Inquiry Lab
Measuring the Speed of Sound Using
Closed-pipe Resonance
When a sou

Daily Log for the Mousetrap Project
Day 1 (May 1, 2014)
The first day, I researched about how to
build a mousetrap adapted for speed and
where to buy the materials needed for
building it. Luckily, this you tube video:
http:/www.youtube.com/watch?v=Sq-xk8Y

Physics 30 EMR Review Questions
1. An electromagnetic wave is created by
A. a constant electromagnetic force A EM (Z r S
D B. a changing field of any kind
. a magnet in an electric field . 60 [a a ‘4
. . ~ . M 51
an accelerating electric charge 0 Y t 3

Chapter 5 Trigonometric Functions Graphs
Section 5.1 Graphing Sine and Cosine Functions
Section 5.1
Page 233
Question 1
a) One cycle of the sine function y = sin x, from 0 to 2 , includes three x-intercepts, a
maximum, and a minimum. These five key points

Purpose:
To find the initial charge in the pith sphere after touching it with the Van de Graff generator.
Hypothesis:
We touched the hanging ball with the Van de Graff generator, so the charge was transferred in a small amount in less than a
microsecond.

Saurav Adhikari & Utsav Gurjar
Lab: Determining the focal length of convex lens
Purpose:
The purpose of the lab was to be able to measure the focal length of any given lens (in
this case 3 convex lenses were given) by measuring the object distance and ima

Chapter 4 Trigonometry and the Unit Circle
Section 4.1 Angles and Angle Measure
Section 4.1
Page 175
Question 1
a) 4 is a clockwise rotation
b) 750 is a counterclockwise rotation
c) 38.7 is a clockwise rotation
d) 1 radian is a counterclockwise rotation
S

Jan 1997
Numeric Response 1
An electromagnetic wave has a frequency of 2.00 ! 1024 Hz. The speed of the wave in a
vacuum, expressed in scientific notation, is b ! 10w m/s. The value of b is _.
(Round and record your answer to three digits.)
1. In a vacuum

24. An object is placed 35.0 cm fr
image produced is
m a diverging lns that has a focal length of 20.0 cm. The
A. réél and larger than the object
B. than and smaller than the object
Virtual and larger than the object / ‘ Va
. irtual and smaller than t

Coulombs Law Lab
(The relationship between the distance between two charges and the electrostatic
force)
By: Saurav
Adhikari
Ali Naveed
Utsav Gurjar
Purpose
To find the initial charge in the pith sphere (hanging ball) after
touching it with the Van de Gr

Saurav Adhikari & Utsav Gurjar
REFRACTION LAB
Purpose:
The purpose of the lab was to be able to measure the index of refraction of a given material (in this case, an acrylic half circle)
by using Snells Law. (n1 . sin1 = n2. sin2)
Hypothesis:
We know that

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REFRACTION OF LIGHT EXPERIMENT
BY: SHAMAIL GORAYA AND RAHUL DHAWAN
Purpose: The purpose of this experiment is to determine the index of refraction for the Acrylic
half-circle (the plastic used in this experiment).
Hypothesis:
http:/www.enotes.com/homework

Saurav Adhikari & Ali Naveed
J.J Thompsons Experiment
Purpose:
To determine the charge to mass ratio of electrons experimentally, as these values
were unknown during the late 1800s when J.J Thompson conducted this
experiment.
Hypothesis:
Electron
Mass (me