Exploding Meteors
When meteors enter the atmosphere, they are typically traveling at around 15km/s. At such
speeds, heat does not have time to be conducted away and even the air has no time to be
pushed out of the way. This results in adiabatic compressio
Thinking outside the box: Negative mass and motion.
From time to time, it is amusing to consider extending physics to unusual
circumstances or values of parameters.
Consider an object with a negative mass. How would it behave? How would we be
able to dete
Motion concept questions
[1] Is it possible to have an average velocity of zero and an average speed greater than zero?
Explain your reasoning and include an example in your answer.
[2] If the average speed of an object is zero, what MUST BE TRUE about th
Perpendicular Axis Theorem
For a three dimensional object, the moments of inertia about 3 mutually
perpendicular axes are related due to geometry and the definition of the moment
of inertia.
The moment of inertia about an axis is given by
s dm where s is
Andrew Cline
Phys. 243
Spring 2016
Circuit Conceptual Analysis Homework
1)
2)
3)
4)
5)
6)
7)
8)
False. The current leads V on the capacitor, so the same must be true for the field.
False Zc =1 /wc So the impedance decreases with an increase in frequency.
Oscillators and waves:
[1] A 200 gram mass is hung from a spring whose total length at equilibrium is 0.5
meters. The mass is then set swinging as a simple pendulum.
a) What is the period of the pendulum?
b) What must the spring constant be if the spring
Paper Homework 3 Viscosity and Flow.
Calculate the Reynolds number, Re = (2rv)/ , for the following situations and decide
whether the flow of fluid around them is laminar or turbulent.
For the radius, use r = 2(Area/perimeter) which, for a circle, gives t
Paper HW 9: Torque
Two identical spheres of radius r are placed inside a cylinder of radius R as
shown in the diagram below. You are given that R/2 < r < R and that each ball
has a weight W. All surfaces are smooth. Show that there is a minimum mass,
m, o
Thermodynamics Homework
[1] One mole of ideal gas is initially at 1 atm. and has a volume of 5 L.
a) Calculate the work done on the gas during an isothermal, reversible compression to a volume of 2L.
b) Calculate the work done during a reversible adiabati
Phys 121 Project ideas:
Determine the amount of air resistance on a moving object.
Determine the friction of a cart track.
Compare the friction of commercial cookware surfaces.
Design a catapult and compare the experimental results for range with the desi
PHYSICS 221 EXAM 1
points for each part are in red
Long answer: (25 points each). Show all your work!
[A] Precipitation from cold air masses sometimes falls as balls of ice called hail.
(1) Suppose one such ice ball falls from an altitude of 6100 meters a
Work Calculations
[1] A gas is allowed to expand at constant pressure until it reaches its final volume. It is then
cooled at constant volume until it reaches its final pressure. The initial state of 1.00 mol of a
dilute gas is P1 = 2.97 atm, V1 = 0.95 L,
THERMODYNAMICS OF GASES
Basic Tools:
PV = nRT
dE = dw + dQ
E = 3/2 RT per mole
dw = -PdV
We will employ the above tools to construct expressions for the work done and the
heat exchanged during various types of processes. The questions will lead you
throug
Paper HW2 2 Dimensional Waves
[1] To model standing waves on a rectangular plate, we can use our usual approach of separating the
problem into two parts, one along each perpendicular axis. For the following 2 sets of conditions, find
the expressions of th
Second Take Home Exam
[A] 1D Collision
Consider a collision between a 0.500 kg cart moving at 0.60 m/s with a 0.250
kg cart moving at -0.80 m/s.
(1) Calculate the Vcm
(2) Transform the cart velocities to the CM frame.
(3) Change the signs of the velocitie
Optional Gravity Paper Homework [20 points]
Kepler 16b
Most stars in the universe occur as double stars. One such system is Kepler 16b, a binary star
with an orbiting planet. The usual way to treat such 3 body systems is to treat the two stars as
both orb
Expanding the Treatment of Heat and Matter
[1] A bimetal strip is 10cm long at 300K and made of iron and molybdenum. When heated to 500K, it
bends. Calculate the radius of curvature given that the strip is 1mm thick (0.5mm between centers of
the metal lay
Statistical Physics Extra HW
The second part to one of the heat and temperature problems was concerned with
determining the fraction of helium atoms which would have speeds greater than the
escape speed of 11 km/s at a temperature of 300K.
To do this, you
Physics Lab Requirements and Procedures
The physics lab is an "open" type of lab. This is convenient because it allows
you some flexibility in the times that you may come to the laboratory to do
your experiments. It does require vigilance on your part to
Reflection and Refraction of Light
WSU-Vancouver PHYS 102
Updated 01/2016 gmn, rc, jmh
Materials
1 each ray box
2 each multi-mirrors
1 each Lucite semi-circular lens
1 each rotating ray table
1 each metric ruler
graph paper (student-supplied)
Goals
1) To
Vibrating Strings
WSU-Vancouver PHYS 101
Updated 1/2016 gmn, rc, jmh
Materials
2 each large ring stand and base
1 each 90 ring stand clamp
1 each large (cast metal) hanging mass set
1 each small mounting rod
1 each pulley
1 each measuring tape
2 each elec
Interference of Light
WSU-Vancouver PHYS 102 and 202
Updated 01/2016 gmn, jmh, rc
WARNING: Be aware of LASER SAFETY: Do not look directly into the beam or
reflections of the beam. Dont point the laser at anything other than the screen. Failure to
follow t
Images with Thin Lenses
WSU-Vancouver PHYS 102 and 202
Updated 2/2016 jmh, rc
Materials
1 each ray box
2 each lenses: one with a negative focal length, the other with a positive focal length
1 each optical track (optical bench)
1 each optical target scree
WSU Vancouver College Requirement or Substitution Petition [1/30/2015]
To fulfill the graduation requirement for foreign language proficiency for the College of Arts and Sciences
or the College of Communication.
Petitions should be submitted no later than
CHAPTER 4
Note: the answers to the Comprehension questions are at the end of the textbook.
Concept check questions (in figure legends)
FIGURE 4.1
Answer: Both of these colors are considered wild type because both of them are prevalent in natural
populatio
Electric Fields
WSU-Vancouver PHYS 102 and 202
Updated 02/2016 gmn, JMH, RC
Materials
1 each power supply
1 each digital multi-meter (DMM)
1 each electric field experiment board
2 each alligator clips
2 each electrical lead cables
Common Materials: variou
CHAPTER 2
Note: the answers to Comprehension questions are at the end of the textbook.
Concept check questions (in figure legends)
FIGURE 2.2
Answer: The male gamete is found within pollen grains.
FIGURE 2.3
Answer: The white flower is providing the sperm
Chapter 2 Reading Study Guide
Mendelian Inheritance
General Genetics (BIO 301)
I. Chapter 2-1:
A. Section Learning Objectives:
1. Explain the characteristics of pea plants that make them a suitable organism to study genetically.
2. Outline the steps that
Electrostatics
WSU-Vancouver PHYS 102
Updated 02/2016 gmn, JMH, RC
Materials
1 each electroscope kit with electrostatics accessories
Common Materials: matches and ashtrays (at instructors discretion)
Goals
1) To understand and verify the presence of two k