Phys 111 HW #04
Due: Mon., Sep. 05
Name:
Problem 1. (15 points) Motor Trend tested a 2011 Tesla Roadster Sport and found it could accelerate from
0 to 60 mph in 3.7 s.
A. Model: Explain how you will model this system. What assumptions will you make?
B. Vi
Phys 111 HW#06
Initial Work Due: Mon., Sep. 12
Corrections Due: Wed. Sep. 14
Name:
Problem 1. (10 points)
S o lu ti o n V i e w e r
A. Math. [Formula First]
B.Unit:Check.Chapter:
C
Solution.
C3
9 / 7/1 6, 11:12 A M
Problem Number:
C3D.1
h t t p s:/ / sixi
Name:
Problem 1. (10 points)
018.6 Pluto and its satellite Charon are separated by a
center-to-center distance of 19,600 km. Pluto has 853 times
the mass of Charon.
(a) How far from Plutos center of moms is the systems
center of mass?
(b) How does this co
Phys 111 HW#03
Initial Work Due: Mon., Sep. 5
Name- Corrections Due: Wed. Sep. 7
Problem 1. (10 points)
CZBJ3 A magnet sticks to the side of a refrigerator. What
macroscopic interactions does it participate in? (Hints:
What keeps the magnet from merging
Solutions to Mastering physics Homework
#15
(Vibrating Hydrogen Molecule) When displaced from equilibrium by a small amount, the two hydrogen
atoms in an H2 molecule are acted on by a restoring force FxZ—klx with k1 = SOON/m.
Calculate the oscillation fre
An object moves with simple harmonic motion. If the
amplitude and the period are both doubled, the objects
maximum speed is
A. quartered.
B. halved.
C. quadrupled.
D. doubled.
E. Unchanged.
An object moves with simple harmonic motion. If the
amplitude and
Physics 2220 Module 05 Homework
01.
1.0 1020 electrons flow through a cross section of a 2.0-mm-diameter iron wire in 5.0 s. What is the
electron drift speed?
From a table in the book, the electron number density of iron is:
n = 8.5 1028 electrons / m 3
T
21 Fall 2006
1
HW5 Solutions
Problem 28.4
1.0 1016
electrons ow through a cross section of silver wire in
320 s
with a drift speed of
8.0 104 m/s.
What is the diameter of the wire?
Solution: The electron current is:
i=
In silver, there are
5.8 1028
Ne
1.0
Physics 11
Fall 2012
NAME:
Quiz 6 - Solutions
Make sure your name is on your quiz, and please box your nal answer. Because we will
be giving partial credit, be sure to attempt all the problems, even if you dont nish them!
A 5.0 kg cat and a 2.0 kg bowl of
PHYS1100 Practice problem set, Chapter 13: 7, 10, 14, 19, 24, 27, 30, 34, 56, 59, 60, 68, 72
13.7.
Model:
Visualize:
The drill is a rigid rotating body.
The figure shows the drills motion from the top.
Solve: (a) The kinematic equation f = i + (tf ti) bec
Chapter 9
Rotation
Conceptual Problems
7
During a baseball game, the pitcher has a blazing fastball. You have
not been able to swing the bat in time to hit the ball. You are now just trying to
make the bat contact the ball, hit the ball foul, and avoid a
ks;
Midterm Exam {M D ) L6) V££SV DA]
May 10, 2013
Phys 223A
Max Points: 55 Name
Max time: 95 minutes
Note: Please show all your work! Make sure your ﬁnal answer is rounded to the correct number of
signiﬁcant ﬁgures.
9’5 4’0pw Short Answer Questions:
1) A
Physics 9 Fall 2009
Homework 6 - Solutions
1. Chapter 32 - Exercise 8.
How much power is dissipated by each resistor in
the gure?
Solution
First, lets gure out the current in the circuit. Since the two resistors are in series, we
can replace them by an eq
Physics 111
Lab 02
Fall 2016
Lab 02: Measuring |~
g|
1
Goals
Gravity is the most evident of the long-range interactions in our daily lives. While the magnitude of the
gravitational field |~g | varies slightly in different places, typically |~g | ' 9.8 N/k
Phys 111 HW #06
Due: Fri., Sep. 9
Name:
Problem 1. (10 points)
A. Sketch each of the following vectors, and then nd its magnitude and direction:
1. F = (6 + 8) N
2. v = (50 100) mph
i
j
B. An ant is located at r = (40 cm, 35 below the x-axis). Make a sket
Name:
Phys 111 HW #07
Due: Mon., Sep. 12
Problem 1. (5 points) A ball is released from rest from the top of a ramp as shown below.
A. Model: (Ill answer this for youTreat the ball as a particle, and assume air resistance and rolling
friction is negligible
Phys 111 HW #08
Due: Wed., Sep. 14
Name:
Problem 1. (10 points) A ball thrown horizontally at 30 m/s travels a horizontal distance of 60 m before
hitting the ground.
A. Model: List your assumptions.
B. Visualize/Paramaterize: Make a sketch with coordinate
Phys 111 HW #19
Due: Wed., Oct. 12
Name:
Problem 1. (10 points) A 0.40 kg model rocket (engine thrust = 20 N) is resting horizontally at the top
edge of a 40-m-high wall. At t = 0 s, the rocket engine res, launching it over the edge.
A. Model: Ill answer
Phys 111 HW #20
Due: Mon., Oct. 17
Name:
Problem 1. (10 points) A 20 gram test tube is mounted on a centrifuge 4.0 cm from the rotation axis. At
t = 0, it starts up from rest and steadily increases its rotational speed. At t = 30 s, it is spinning at 5000
Phys 111 HW #22
Due: Mon., Oct. 24
Name:
Problem 1. (10 points) A 2.0 kg toy car is traveling to the right with a speed of 1.0 m/s when it struck by
a childs hand, which exerts the force on the car shown in the gure below.
A. Model: List your assumptions.
Name:
Phys 111 HW #25
Due: Mon., Oct 31
Problem 1. (10 points) A 60 kg student is standing atop a spring (spring constant = 4.0 104 N/m) in an
elevator that is accelerating upward at 3.0 m/s2 .
A. Model: List your assumptions.
B. Visualize/Parameterize: D
Phys 111 HW #26
Due: Wed., Nov. 02
Name:
Problem 1. (10 points) The gure below is the potential energy diagram for a 200 g particle that is released
from rest at the point A.
A. Model: List your assumptions.
B. Visualize/Parameterize: Draw the total energ
Phys 111 HW #31
Due: Wed., Nov. 16
Name:
Problem 1. (10 points) A 2.0 kg package is attached to a string that is wrapped around a 3.0 kg, 4.0-cmdiameter hollow iron cylinder that is free to rotate about a horizontal axle. The package is released 1.0 m
abo
Physics 111
Lab 03
Fall 2016
Lab 03: Testing the Particle Model for Tossed
Balls and Rods using Video Analysis
1
Goals
The Particle Model says following:
Particle Model: A systems center of mass responds to its external interactions exactly as a
point par
Name:
Phys 111 HW#09
Initial Work Due: Mon. Sep. 19
Corrections will not be graded
To get full credit, each solution must include a Model section (including assumptions,
visualization, and parameterization), Math section where formula is found using symbo
Physics 111
Lab 04
Fall 2016
Lab 04: Type B Uncertainties
1
Goals
All of the measurements weve made in the previous labs involved either doing multiple trials or fitting curves
to multiple data points. In each case, the 95% CIs were obtained by a statisti
[ Problem View ]
Magnetic Field near a Moving Charge
Description: Use Biot-Savart law to find the magnetic field at various points due to a charge moving along the z axis. A particle with positive charge is moving with speed along the z axis toward positi