FIGURE 17-5
Which of the graphs in Fig. 17-5 indicates that a positive temperature coefficient is
obeyed for the entire range shown?
A) graph a
B) graph b
C) graph c
D) graph d
As one stretches a metal rod, which condition is first reached?
A) breaking point
B) fracture point
C) elastic limit
D) proportional limit
Which cones on the eye are most sensitive to light?
A) red
B) infrared
C) green
D) UV
E) blue
Two point charges of + 6.00 μC and + 9.00 μC are placed inside a cube of edge length
0.100 m. The net electric flux due to these charges is given by
A) 0.340 x 106 Nm2/C
B) 0.450 x 106 Nm2/C
C) 1.69 x 106 Nm2/C
D) 3.80 x 106 Nm2/C
E) 4.20 x 106 Nm2/C
A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6
min 40 s. She is swept downstream 480 m. What is the speed of the current?
A) 0.50 m/s
B) 0.80 m/s
C) 1.2 m/s
D) 1.4 m/s
E) 1.8 m/s
Which of the following microscopes is capable of “photographing” individual atoms?
A) light microscope
B) transmission electron microscope
C) scanning electron microscope
D) scanning tunneling microscope
Using K = 3/2 kT, what is the average kinetic energy of a He atom at:
(a) 10. K?
(b) -196.° C?
(c) 100.° C?
A 140. KeV photon strikes an electron and scatters through an angle of 120.
(a) What is the wavelength of the photon before scattering?
(b) What is the photon wavelength after scattering?
You are serving the volleyball for the second time in a volleyball game. If the ball
leaves your hand with twice the velocity it had on your first serve, its horizontal range
R (compared to your first serve) would be
A) twice as much.
B) half as much.
C) times as much.
D) four times as much.
E) 2 times as much.
The average density of blood is 1.06 103 kg/ m3. If you donate a pint of blood to the
Red Cross, what mass of blood have you donated, in grams? (1 pt = 1/2 L, 1 L = 1000
cm3)
A) 530 g
B) 0.530 g
C) 5.30 x 103 g
D) 5.30 x 105 g
E) 5.30 g
Which of the following is not an inertial reference frame?
A) a reference frame that is rotating at a constant rate
B) a reference frame that is moving downward at a constant speed
C) a reference frame that is moving westward at 10 km/s
D) a reference frame that is motionless
E) a reference frame that is moving upward at a constant speed
A transformer consists of a 500-turn primary coil and a 2000-turn secondary coil. If the
current in the secondary is 3.0 A, what is the current in the primary?
A) 0.75 A
B) 1.3 A
C) 12 A
D) 24 A
E) 48 A
If the frequency of the AC voltage across an inductor is doubled, the inductive
reactance of that inductor
A) decreases to one-half its original value.
B) increases to twice its original value.
C) decreases to one-fourth its original value.
D) increases to 4 times its original value.
For a proton moving in the direction of the electric field
A) its potential energy increases and its electric potential decreases.
B) its potential energy decreases and its electric potential increases.
C) its potential energy increases and its electric potential increases.
D) its potential energy decreases and its electric potential decreases.
E) both its potential energy and it electric potential remain constant.
Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).
What is the magnitude of the net force on the 5.0 nC charge?
A) 3.0 10-6 N
B) 4.5 10-6 N
C) 5.4 10-6 N
D) 7.2 10-6 N
E) 9.0 10-6 N
Electromagnetic radiation of wavelength 0.3 pico-meters is which type?
A) gamma rays
B) visible
C) X-rays
D) FM-radio
E) ultraviolet
The work function of a certain metal is 1.90 eV. What is the longest wavelength of light
that can cause photoelectron emission from this metal?
A) 231 nm
B) 14.0 nm
C) 62.4 nm
D) 344 nm
E) 653 nm
In an electroplating process, it is desired to deposit 40.0 mg of silver on a metal part by
using a current of 2.00 A. How long must the current be allowed to run to deposit this
much silver? (The silver ions are singly charged, and the atomic weight of silver is
108.)
What are the dimensions of a square acre of ground if 1 square mile = 640 acres?
A) 147′ x 147′
B) 156′ x 156′
C) 174′ x 174′
D) 194′ x 194′
E) 209′ x 209′
The activity of a sample reduces from 7.55 x 109 Bq to 5.11 x 109 Bq in 5.50 months.
(a) What is the half life?
(b) How many months must one wait for the activity to decrease to 10%?
On a cold winter day, the outside temperature is -20°C and the inside temperature is
maintained at 20°C. There is a net heat flow to the outside through the walls, roof, etc.,
of 25 kW. At what rate is the air outside the house gaining entropy as a result of this
process?
A) 13 W/K
B) 25 W/K
C) 85 W/K
D) 99 W/K
E) 0 W/K
Consider a camera with a 20. cm diameter lens recording images at 600. nm
wavelength.
(a) What is the angular resolution limit?
(b) What is the minimum sized features which can be resolved on Mars (at a distance of
9.0 107 km) with this lens?
Alpha decay reduces the atomic and mass numbers respectively by how much?
A) 4, 2
B) 2, 2
C) 2, 4
D) 4, 4
E) 2, 6
FIGURE 2-6
Fig. 2-6 shows the velocity-versus-time graph for a basketball player traveling up and
down the court in a straight-line path. Find the net displacement of the player for the 10
s shown on the graph.
A) 20 m
B) 18 m
C) 16 m
D) 14 m
E) 12 m
Two cars are traveling in the same direction and with the same speed along a straight
highway. Does either driver hear a different frequency from the other car’s horn than
they would if the cars were stationary?
A) They both experience a Doppler shift.
B) Only the driver of the front car experiences a Doppler shift.
C) Only the driver of the rear car experiences a Doppler shift.
D) No, because neither driver experiences a Doppler shift.
E) It is impossible to predict.
Which of the following will increase the capacitance of a parallel plate capacitor?
A) a decrease in the plate area and an increase in the plate separation
B) a decrease in the potential difference between the plates
C) an increase in the potential difference between the plates
D) an increase in the plate area and a decrease in the plate separation
E) none of the above
As the frequency of the AC voltage across a capacitor approaches zero, the capacitive
reactance of that capacitor
A) approaches zero.
B) approaches infinity.
C) approaches unity.
D) becomes negative.
The Q value for a particular reaction is -2.4 MeV, and the reaction’s threshold energy is
9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the
stationary target nucleus?
A) 5
B) -0.75
C) 3
D) 0.25
E) 4
A very fine thread is placed between two glass plates on one side and the other side is
touching to form a wedge. A beam of monochromatic light of wavelength 600 nm
illuminates the wedge and 178 bright fringes are observed. What is the thickness of the
thread?
A) 22.3 μm
B) 26.7 μm
C) 32.3 μm
D) 53.3 μm
E) 76.3 μm
A 4-Ω resistor, an 8-Ω resistor, and a 24-Ω resistor are connected together. What is the
maximum resistance that can be produced using all three resistors?
A) 288 Ω
B) 12 Ω
C) 96 Ω
D) 36 Ω
E) 192 Ω
The moment of inertia of a solid cylinder about its axis is given by 0.5MR2. If this
cylinder rolls without slipping, the ratio of its rotational kinetic energy to its
translational kinetic energy is
A) 1:2
B) 1:3
C) 2:1
D) 1:1
E) 3:1
An electric dipole placed into a non-uniform electric field feels a net force
A) parallel to the field.
B) perpendicular to the field.
C) of zero magnitude.
D) 45 with respect to the field.
E) 30 with respect to the field.
If n = 5, which one of the following is not an allowed magnetic quantum number?
A) 0
B) 2
C) 3
D) 4
E) 5