PHY 221: Practice Exam 1 Uncertainty, Units, Kinematics
1) A person initially at point P in the illustration stays there a moment and then moves along
the axis to Q and stays there a moment. She then runs quickly to R, stays there a moment,
and then strol
PHY 221 Spring 2015, Homework #3
due Wednesday, February 10
Complete the homework problems on a separate sheet (or sheets) of paper. Leave at least several blank
lines between each problem. Staple this page to the front, and dont forget to write your name
HW #6 PHY221
Spring 2016, due Wednesday, March 16
1. In the physics lab, you are trying to place pennies on a rotating platform so that they
dont slide off. Your lab partner tells you, Pennies on the outside stay on because
ac =
v2
r . For larger r, the c
Vector Addition activity: Introduction to 2D kinematics
https:/phet.colorado.edu/sims/vector-addition/vector-addition_en.html
For all of the activities where you create a representation in the simulation, take a screen capture or use
the snipping tool to
Homework #4, due Wednesday, October 12
Chapter 20
1. Find the amplitude, wavelength, wavenumber, and angular frequency constant of the traveling
waves in the graph below.
y m
4
24 m s
2
5
10
15
20
x m
2
4
2. A circular wave pattern is shown below. What is
Homework #3 Chapter 14: Oscillations
Due Friday, September 30
1. When a piano string is hammered to play an E note, the string vibrates at 659 Hz. What is the
period of vibration?
2. An atom with two bonds vibrates as if connected to two identical springs
Conceptual Homework #1
Due Wednesday, August 27
1. Give three examples of oscillatory motion. (Note that circular motion is not the same as
oscillatory motion.)
2. The figure shows the position vs. time graph of a particle in simple harmonic motion (SHM).
PHY 221 Spring 2015, Homework #2
due Friday, January 29
Complete the homework problems on a separate sheet (or sheets) of paper. Leave at least several blank
lines between each problem. Staple this page to the front, and dont forget to write your name at
PHY 221 Spring 2015, Homework #1
due Monday, January 18
Complete the homework problems on a separate sheet (or sheets) of paper. Leave at least several blank
lines between each problem. Staple this page to the front, and dont forget to write your name at
Physics 222, Test 1, September 22, 2016
Name:_
All problems should be solved using the rubric at the end of the document. You may solve these
as if they were homework. Internet, TAs, and book are permitted. You will solve one of these
problems I choose, u
HW #1 Chapter 12: Rotation of a Rigid Body
Due Friday, September 3
1. A skater with arms extended outward spins at 200 rpm. At what speed do her fingertips travel if
they are 75 cm from her center?
2. A high speed drill reaches 2000 rpm in 0.5 s.
a. What
Homework #2
Chapters 20
1. A rod made of plastic has a charge of -15 nC.
a. Have electrons been added or removed?
b. How many electrons were added/removed?
2. What it the total charge of all the protons in 1 mole of He gas?
3. How close must two electrons