Name:
Section:
Physics 2130
Final Exam
May 2, 2012
Turn o your cell phone NOW, if you have one, and put it away. Please place your bags
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Physics 2130 Final Exam Solutions
3
1.
B
The gure shows a car moving to the left, and slowing down.
Given the coordinate axes shown, the cars acceleration a could be
A) 2 m/s2 (x) B) 2 m/s2 (+) C) 2 m
Quiz #10
1. Which pendulum has the larger frequency?
A) 1kg
B) 9kg
C) Both the same
y
2. This graph is the displacement of a(n) _ oscillator.
A) underdamped
B) overdamped C) forced
3. Given two sound
1. The change in momentum p of a ball is equal to the _ on it. Quiz #7
A) impulse acting
B) work done
C) weight placed
Two balls with the same mass and speed hit a wall. Ball A
sticks to the wall; bal
Quiz #11
1. The gure shows a standing wave.
The arrow points to a
A) node B) antinode
2. Which shows the lowest-frequency standing wave in a
pipe which is open on the left and closed on the right?
A)
The gure shows two masses attached by a rigid rod, which is
spinning around the axis marked by the black dot.
1. Which ball has the larger speed v?
A
A) A
B) B
C) both the same
Quiz #9
2. Which ball h
Equilibrium
A 2kg solid, uniform ball of radius 0.1 m is released from rest at point A in the
figure below. Its center of gravity is 1.5 m above the ground. The ball rolls
without slipping to the bott
Fluids
Fluids at Rest
l
l
The density, , is defined as:
In theory the density at a point is the limit for an
infinitesimal volume, but we assume a fluid sample is
large relative to atomic dimensions a
Rolling
Consider an object with a circular cross section that rolls without
slipping along a surface.
This motion can be simplified if we treat it as a combination of
translational motion of the
Fluids
Fluids at Rest
What volume of helium (density = 0.179 kg/m3) has the same mass
as 5.0 m3 of nitrogen (density = 1.25 kg/m3)?
a) 35 m3
b) 27 m3
c) 7.0 m3
d) 3.5 m3
e) 0.72 m3
A yacht floats in a
Chapter 10
Rotational Kinetic Energy and
Rotational Inertia
A ball rolls across the floor, and then starts up a
ramp as shown below. In what direction does the
angular velocity vector point when the b
Fluids
Fluids in motion
Equation of continuity
l
l
Motion of real fluids is complicated and poorly
understood (e.g., turbulence)
We discuss motion of an ideal fluid
1. Steady flow: Laminar flow, the v
1. The gure shows a 2kg block and a
1kg block. Where is the center of mass?
A
B
C
D
2kg
E Quiz #8
1kg
2. A 10kg block moves at 10m/s to the right, and a 1kg block 10kg 10m/s
moves 1kg to the left. The
1. The gure shows a 2kg block and a
1kg block. Where is the center of mass?
A
B
C
D
E Quiz #8
BCAABC
2kg
1kg
2. A 10kg block moves at 10m/s to the right, and a 1kg block 10kg 10m/s
moves 1kg to the le
The gure shows two masses attached by a rigid rod, which is
spinning around the axis marked by the black dot.
1. Which ball has the larger speed v?
A
A) A
B) B
C) both the same
Quiz #9
BCABBA
2. Which
1. The change in momentum p of a ball is equal to the _ on it. Quiz #7
A) impulse acting
B) work done
C) weight placed
ABBCCA
Two balls with the same mass and speed hit a wall. Ball A
sticks to the wa
Quiz #11
BDABBC
1. The gure shows a standing wave.
The arrow points to a
A) node B) antinode
2. Which shows the lowest-frequency standing wave in a
pipe which is open on the left and closed on the rig
Quiz #10
CABBBC
1. Which pendulum has the larger frequency?
A) 1kg
B) 9kg
C) Both the same
y
2. This graph is the displacement of a(n) _ oscillator.
A) underdamped
B) overdamped C) forced
3. Given two
F1
1. In this gure, if I apply a force F1 to the left
side of the uid, the right side feels force F2.
A) a greater
B) the same
C) a smaller
2. The density of water is 1000 kg/m3.
The oating object in
Name:
Section:
Physics 2130
Exam 3
April 3, 2012
Turn o your cell phone NOW, if you have one, and put it away. Please place your bags
and other unnecessary items on the ground. Be sure you are not si
Physics 2130 Exam 3 Solutions
3
1.
A
If I apply a 2 N force to stretch a spring with
spring constant k = 20 N/m, by how much does the spring
stretch?
A) 0.1 m B) 10 m C) 40 m
k=20N/m
2N
If I am holdin
F1
1. In this gure, if I apply a force F1 to the left
side of the uid, the right side feels force F2.
A) a greater
B) the same
C) a smaller
2. The density of water is 1000 kg/m3.
The oating object in