Chapter 22
Heat Engines, Entropy and the
Second Law of Thermodynamics
1. What is the change in entropy to raise the temperature of
500 g of water from 0 C to 75 C? (The specific heat
capacity of water is 4.184 J/g K.)
267 J/K
362 J/K
508 J/K
610 J/K
829 J
Chapter 10
Rotation of a Rigid Object About
a Fixed Axis
1. The linear mass density of a rod extending from (0, a) is
given by (x) = (4 M/(3 a) (1 x/(2a). What is the
moment of inertia about the point x = 0?
M a2/2
2 M a2/3
7 M a2/9
5 M a2/18
3 M a2/32
1
Chapter 10
Thermal Physics
1. What is 350 F in Celsius?
C
C
C
C
C
1
2
0%
0%
0%
E
0%
B
A
0%
D
162
177
212
572
687
C
A.
B.
C.
D.
E.
2. A steel wire, 150 m long at 10 C, has = 11 10-6/ C.
Calculate the change in length when heated to 45 C.
0.65 cm
1.8 cm
3.7
Chapter 9
Linear Momentum and Collisions
1. The force is given by F(t) = F0 (1 - exp(-t/T), where
F0 = 2.46 N and T = 1.02 s. Calculate the impulse over the
time period from 0 to T.
0.923 kg m/s
1.70 kg m/s
2.07 kg m/s
2.69 kg m/s
3.06 kg m/s
1
2
0%
0%
E
Chapter 7
Rotational Motion and
the Law of Gravity
1. What is the angular speed about the rotational axis of the
Earth for a person standing on the surface?
7.3 10-5 rad/s
3.6 10-5 rad/s
6.28 10-5 rad/s
3.14 10-5 rad/s
Depends on the persons
latitude.
1
2
Chapter 9
Solids and Fluids
1. A copper wire of length 2.0 m, cross-sectional area of 7.1
10-6 m2, and a Youngs modulus of 11 1010 N/m2 has a
200-kg load hung on it. What is its increase in length?
0.2 mm
0.5 mm
1.0 mm
2.5 mm
5.0 mm
1
2
0%
0%
E
0%
D
0%
B
Chapter 8
Rotational Equilibrium and
Rotational Dynamics
A net torque on a system must:
A. happen around its center of
mass.
B. produce an angular
acceleration.
C. conserve angular momentum.
D. change its rotational inertia.
E. None of the above.
1
2
0%
E
Chapter 8
Conservation of Energy
1. The potential energy diagram is illustrated for some
system below. Which point is considered to be stable
equilibrium?
1
2
0%
E
0%
D
0%
C
0%
B
A
0%
A.
B.
C.
D.
E.
A.
2. The potential energy diagram is illustrated for so
Chapter 7
Energy of a System
1. A force of F = (3.5, 2.7) N acts on a 7.1 kg object over a
displacement of x = (-2.2, 3.9) m in a time period of
0.28 s. At what average rate is work being done?
0.40 W
0.76 W
1.5 W
2.8 W
10 W
1
2
0%
0%
E
0%
D
0%
B
A
0%
C
A
Chapter 6
Circular Motion and Other
Applications of Newtons Laws
1. A car rounds a banked curve. The angle of the bank is 10 ,
and the curve is at a radius of 125 m. At what speed should
the driver go so that there are no transverse frictional forces
on t
Chapter 6
Momentum and Collisions
1. A car wash nozzle directs a stream of water at 1.5 kg/s,
with a speed of 30 m/s. Assuming the water does not splash
back, what force does the water exert on the glass?
0.49 N
20 N
45 N
200 N
440 N
1
2
0%
0%
E
0%
D
0%
B
Chapter 11
Angular Momentum
1. A force F = (1.0, 2.0, 1.0) N acts on an object at a distance
of x = (1.0, 2.0, -5.0) m from the center of rotation. What
torque acts on the object?
13.4 m N
0.0 m N
(4.0, 4.0, -5.0) m N
(-8.0, -4.0, 4.0) m N
(12., -6.0, 0.0
Chapter 11
Energy in Thermal Processes
1. A 10-kg sample of aluminum (cAl = 900 J/kg C) is
warmed by 5 C. How much heat was added?
104 J
104 J
105 J
105 J
105 J
1
2
0%
0%
0%
E
0%
B
A
0%
D
4.5
9.0
1.4
2.0
4.5
C
A.
B.
C.
D.
E.
2. How much heat energy must b
Chapter 20
The First Law of
Thermodynamics
1. Which thermodynamic process has no change in internal
energy?
Isothermal process
Adiabatic process
Isovolumetric process
Stochastic process
Isobaric process
1
2
0%
0%
E
0%
D
0%
B
A
0%
C
A.
B.
C.
D.
E.
2. Which
Chapter 18
Superposition and
Standing Waves
A.
B.
C.
D.
E.
D
E
1
2
0%
B
A
0%
0%
0%
0%
E
C
D
B
C
A
1. Consider the two waves
below. At which point
will the waves add
constructively?
2. Which of the following equations would represent a
standing wave?
A cos
Chapter 17
Sound Waves
1. You detect a 62 dB sound. What is wave intensity?
10-10 W/m2
10-8 W/m2
10-7 W/m2
10-6 W/m2
10-5 W/m2
1
2
0%
0%
0%
E
0%
B
A
0%
D
4.9
7.4
2.8
1.6
9.8
C
A.
B.
C.
D.
E.
2. If the sound wave intensity is 1.6
amplitude of the pressure
Chapter 16
Wave Motion
1. A sinusoidal wave travels down a long string at a
frequency of 800 rad/s, a wavelength of 0.35 m, an
amplitude of 0.020 m, and a mass/length is 0.0050 kg/m.
What is the wave speed?
2.2 m/s
7.1 m/s
14 m/s
23 m/s
45 m/s
1
2
0%
0%
E
Chapter 15
Oscillatory Motion
1. The differential equation for a critically damped harmonic oscillator
is
d 2x
dx
2
dt 2
dt
xt
0
Which of the following is the solution to the above equation?
A. x(t) = A exp(-2 t)
+
1
2
0%
0%
0%
E
0%
B
A
0%
D
x(t) = B t co
Chapter 14
Fluid Mechanics
1. A cube of edge length a is completely submerged in a fluid of
density . The bottom surface is at a depth h + a/2, and the top
surface is at h - a/2. The pressure from the fluid exerts forces on all
six sides of the cube. What
Chapter 14
Sound
1. When a sine wave is used to represent a sound wave, the
crest corresponds to:
A. when and where the air molecules
are moving in the same direction
of the wave.
B. when and where the air molecules
are moving in the opposite
direction of
Chapter 13
Universal Gravitation
1. The Schwarzchild radius for black holes is given by
R = 2 G M/c2
Evaluate this for a 3 solar mass black hole.
(MSun = 1.99 1030 kg)
0.067 m
21 m
2900 m
8800 m
3.9 1012 m
1
2
0%
0%
E
0%
D
0%
B
A
0%
C
A.
B.
C.
D.
E.
2. Tw
Chapter 13
Vibrations and Waves
1. A 0.20 kg object, attached to a spring with k = 10 N/m, is
moving on a horizontal frictionless surface in simple
harmonic motion of amplitude 80 cm. What is its speed
when its displacement is 40 cm?
25 cm/s
49 cm/s
98 cm
Chapter 12
The Laws of Thermodynamics
1. Consider the thermodynamic cycle shown, where
the pressure increases isovolumetrically, then
the gas expands on the diagonal line, then
compresses isobarically. Consider the temperature at
the point (P, V) to be
Chapter 5
Energy
1. Janice applies a force of 25.0 N along a displacement of
5.00 m. How much work has she done?
5.00 J
10.0 J
25.0 J
125 J
550 J
1
2
0%
0%
E
0%
D
0%
B
A
0%
C
A.
B.
C.
D.
E.
2. The work done by static friction must be:
positive
negative
ze
Chapter 4
Motion in Two Dimensions
1. A car rounds a turn at a constant speed of 30 m/s with a
radius of 100 m. What is the cars acceleration?
0 m/s2
0.3 m/s2
9.0 m/s2
330 m/s2
3000 m/s2
1
2
0%
0%
E
0%
D
0%
B
A
0%
C
A.
B.
C.
D.
E.
2. An airplane travels a
Chapter 4
The Laws of Motion
1. The net force on an object is in the positive x-direction.
Which of the following can also be true?
A. The object is moving in the
positive x-direction.
B. The object is moving in the
positive y-direction.
C. The object is
Bakhsh 1
Iqra A.Bakhsh
Hira A.Bakhsh
L.Thurman
Physics-100
14 march, 2011
Assignment # 9
Chapter # 17:
Review Question 3:
Evaporation is the phase transition from liquid to gas. It is an endothermic (cooling
process) because you have to put in energy to o
Hira A.Bakhsh
Physics-100
L. Thurman
04/07/2011
Assignment Chapter No # 22, 23
Chapter No # 22:
Review Questions:
2. Between the Earth and the Moon, for example, there is no net electrical force. So the weaker
gravitational force, which is only attracts,
Hira A. Bakhshs
L. Thurman
Physics-100
03/31/2011
Assignment no 10
R.Q Ch # 19:
3. The Period of a pendulum is the time of the back-and-forth swing.
15. The superposition principle states that when more than one wave occupies the same space at
the same ti
HIra Allah Bakhsh
L. Thurman
Physics-100
10 March, 2011
Assignment No 8
Chapter No: 14
Review Questions:
1. The energy source for the motion of gases in the atmosphere is the sun, which heats the
different surfaces of the earth, causing the motion of the