20) The
magnitude of A is 5.5. Vector A lies in the second quadrant and forms an angle
of 34 degrees with the y-axis. The components, Ax and Ay, are closest to:
20)
A) A x
= -3.1, Ay = +4.6
B) A x = +3.1, A y = -4.6
C)
Ax = -4.6, Ay = -3.1
D) A x
= +4.6,

23) Figure
15.1 shows 2.6 g of ideal helium gas that undergoes the process 1 2 3.
Find the value of V3.
23)
Figure 15.1
A) 25
liters
B) 50
liters
C)
12 liters
D) 99
liters
Answer: A
24) Figure
15.2 shows a PV diagram for 8.3 g of ideal nitrogen gas in a s

Figure 14.4
33) A
solid sample of a pure compound is contained in a closed, well-insulated container.
Heat is added at a constant rate and the sample temperature is recorded. The resulting
data is graphed in Figure 14.4. Which of the following conclusions

Exam
Name_
MULTIPLECHOICE.Choosetheonealternativethatbestcompletesthestatementoranswersthequestion.
Figure 13.1
1)
A container has a vertical tube, whose inner radius is 24.00 mm, connected to it at its
side. An unknown liquid reaches level A in the conta

Figure 7.6
47) In
Figure 7.6, two masses, each 24 kg, are at rest and connected as shown. The
coefficient of kinetic friction between the inclined surface and the mass is 0.31.
Find the speed of the masses after they have moved 1.6 m.
Answer: 1.9 m/s
47)

16) A
1,321 kg car climbs a 5.0 slope at a constant velocity of 80.0 km/h. Assuming that
air resistance may be neglected, at what rate must the engine deliver energy to the drive
wheels of the car? Express your answer in kW.
A) 48 kW
B) 25 kW
C) 287 kW
D)

26) In
Table 6.2, the maximum gravitational force between the two moons is closest to:
A) 4.0 1014 N
B) 2.0 1014 N
26)
1.6 1013 N
D) 4.4 1013 N
C)
E) 1.0
1014 N
Answer: A
27) In
Table 6.2, a meteoroidal fragment is in circular orbit around Moon B, at a s

Figure 13.2
28) In
Figure 13.2, fluid fills the container shown here. At which of the indicated points is
the pressure greatest?
A) A
B) C
C) B
D) D
E) The pressure is the same at each of the labeled points.
28)
Answer: E
29) A
wooden block contains some

8)
A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir. If
both the length and the diameter of this bar are doubled, the rate at which it will
conduct heat between these reservoirs will be
A) 200 W
B) 100 W
C) 50 W
D) 12

8)
At time t = 0 s, a wheel has an angular displacement of zero radians and an angular
velocity of +29 rad/s. The wheel has a constant acceleration of -0.52 rad/s2. In this
situation, the maximum value of the angular displacement, in rad, is closest to:
A

Figure 8.4
24) In
Figure 8.4, a bullet of mass 0.01 kg moving horizontally strikes a block of wood of
mass 1.5 kg which is suspended as a pendulum. The bullet lodges in the wood, and
together they swing upward a distance of 0.40 m. What was the velocity o

26) A
2.0 kg block on a horizontal frictionless surface is attached to a spring whose force
constant is 590 N/m. The block is pulled from its equilibrium position at x = 0 m to a
displacement x = +0.080 m and is released from rest. The block then executes

Figure 17.13c
36)
36)
0.8 m
1.1 m
A point charge Q = -600 nC and two unknown point charges, q1 and q2, are placed as
shown. The electric field at the origin O, due to charges Q, q1 and q2, is equal to zero.
In Figure 17.13c, the charge q2, in nC, is close

24) Two
identically charged balls are a certain distance apart. The vectors in Figure 17.8
show the magnitude and direction of the electrostatic force on each ball.
24)
Figure 17.8
Suppose the charge on the left ball is now doubled (represented by two plu

18) Figure
16.1 shows a cycle for a heat engine for which QH=59 J. What is the thermal
18)
efficiency?
Figure 16.1
A) 34
%
B) 8.5
%
C)
17 %
D) 14
%
Answer: C
19) A
gas follows the pV trajectory shown in Figure 16.2. How much work is done per
cycle by the

Figure 15.7
43) In
Figure 15.7, an ideal gas is carried around the cyclic process. How much work is
done in one cycle if Po = 4 atm and Vo = 3.00 liters?
A) 485
J
B) 2,280
J
C)
4,850 J
D) 1,210
J
E) 2,420
43)
J
Answer: D
44) Which
of the following is a FA

34) A
Carnot refrigerator takes heat from water at 0C and rejects heat to a room at
20C. Suppose that 78 grams of water at 0C are converted to ice at 0C by the
refrigerator. Calculate the mechanical energy that must be supplied to the
refrigerator. (Note:

30) A
solid, uniform sphere of mass 2.0 kg and radius 1.7 m rolls without slipping down an
inclined plane of height 5.3 m. What is the angular velocity of the sphere at the bottom
of the inclined plane?
A) 9.7 rad/s
B) 6.1 rad/s
C) 8.7 rad/s
D) 5.1 rad/s

18) A
string, 0.15 m long, vibrating in the n = 5 harmonic, excites an open pipe, 0.82 m
long, into second overtone resonance. The speed of sound in air is 345 m/s. The
distance between a node and an adjacent antinode, in the string, in mm, is closest to:

22) Three
solid, uniform flywheels, each of mass 65.0 kg and radius 1.47 m, rotate
independently around a common axis. Two of the flywheels rotate in one direction at
8.94 rad/s; the other rotates in the opposite direction at 3.42 rad/s. Calculate the
mag

41) A
100 kg nonuniform boom, 6.0 m long, is loosely pinned at the pivot at P. A 700 kg
block is suspended from the end of the boom at A. The boom forms a 30 angle with
the horizontal, and is supported by a cable, 4.0 m long, between points D and B. Point