Which graph(s) in Fig. 2-2 represent(s) zero acceleration?
A) only a
B) only b
C) a and b
D) b and c
E) c and d
In electricity, what quantity is analogous to the “acceleration of gravity” g (which is a
force per unit mass)?
A) electric force
B) electric field
C) electric potential
D) electric charge
E) an electric dipole
Two charged objects attract each other with a certain force. If the charges on both
objects are doubled with no change in separation, the force between them
A) becomes zero.
B) doubles.
C) halves.
D) quadruples.
E) increases, but we can’t say how much without knowing the distance between them.
A 1 mF, a 2 mF, and a 3 mF capacitor are connected in parallel, the combination being
connected across a 9 volt battery.
(a) Which capacitor has the greatest charge?
(b) Which capacitor has the greatest voltage?
An elevator weighing 10,000. N is supported by a steel cable. Determine the tension in
the cable when the elevator is accelerated upward at 3.0 m/s2. (g = 9.8 m/s2)
A) 40. kN
B) 10. kN
C) 7.0 kN
D) 13. kN
E) 11. kN
A sound source (normal frequency of 1000 Hz) approaches a stationary observer at
one-half the speed of sound. The observer hears a frequency of
A) 2000 Hz.
B) 500 Hz.
C) 250 Hz.
D) 1500 Hz.
E) 1414 Hz.
FIGURE 22-2
A light beam composed of red and blue light is incident upon a rectangular glass plate,
as shown in Fig. 22-2. The light emerges into the air from point P as two separate
beams
A) that are parallel, with the red beam displaced below the blue beam.
B) that are parallel, with the blue beam displaced below the red beam.
C) that are not parallel, with the blue beam displaced below the red beam.
D) that are not parallel, with the red beam displaced below the blue beam.
At what speed would a 100. meter long spaceship appear to be 60. meters long?
A) 2.4 103 Km/s
B) 0.24 m/s
C) 24. Mm/s
D) 240. Mm/s
E) 2.4 Gm/s
Albert Michelson is primarily remembered for
A) proving length contraction.
B) not being able to detect an “ether”.
C) his theory published in 1916.
D) proving that the speed of light is not constant.
E) proving time dilation.
The magnitude of the charge on each plate of a parallel plate capacitor is 4 μC and the
potential difference between the plates is 80 V. What is the capacitance of this
capacitor?
A) 0.1 x 10-6 F
B) 300 x 10-6 F
C) 100 x 10-6 F
D) 20 x 10-6 F
E) 5 x 10-8 F
Substitute the correct prefix to the fun-word “103-mockingbird”.
A) deci
B) tera
C) peta
D) pico
E) kilo
Photons are emitted when a bound electron jumps up to a(n) ________ energy state.
A) lower
B) higher
C) zero
D) infinite
Two coherent sound waves will constructively interfere when the path difference is the
wavelength times what?
A) half an integer
B) an integer
C) half an odd integer
D) an even integer plus 1/2
Compare two diverging lenses similar except that lens B is rated at 20 Diopters,
whereas lens A is rated at 10 Diopters. The focal length of lens B is
A) twice the focal length of lens A.
B) one-fourth of the focal length of lens A.
C) one-half of the focal length of lens A.
D) 1/ of the focal length of lens A.
E) four times the focal length of lens A.
A resistor and a capacitor are connected in series to an ideal battery of constant terminal
voltage. When this system reaches its steady-state, the voltage across the resistor is
A) greater than the battery’s terminal voltage.
B) equal to the battery’s terminal voltage.
C) less than the battery’s terminal voltage, but greater than zero.
D) zero.
FIGURE 5-9
A simple pendulum, consisting of a mass m, is attached to the end of a 1 yd length of
string, as shown in Fig. 5-9. If the mass is held out horizontally, and then released from
rest, its speed at the bottom of the swing is about
A) 2. m/s.
B) 4. m/s.
C) 1.3 m/s.
D) 10. m/s.
E) 30. m/s.
An ideal ammeter should
A) have a high coil resistance.
B) introduce a very small series resistance into the circuit whose current is to be
measured.
C) introduce a very large series resistance into the circuit whose current is to be
measured.
D) consist of a galvanometer in series with a large resistor.
A plastic block of dimensions 2.0 cm 3.0 cm 4.0 cm has a mass of 30. grams. What is
its density?
A) 1.2 g/cm3
B) 1.6 g/cm3
C) 1.3 g/cm3
D) 0.80 g/cm3
E) 2.3 g/cm3
A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car.
A) The force of collision on the truck is greater then the force of collision on the car.
B) The force of collision on the truck is equal to the force of collision on the car.
C) The force of collision on the truck is smaller than the of collision force on the car.
D) The truck did not slow down during the collision.
E) The car did not slow down during the collision.
The energy of an electron state has an uncertainty of about 0.500 eV. What is the
uncertainty in the life-time of the level?
A) 1.32 x 10-15 s
B) 8.28 x 10-15 s
C) 1.32 x 10-11 s
D) 8.28 x 10-11 s
E) 1.32 x 10-8 s
An ice skater performs a pirouette (a fast spin) by pulling in his outstretched arms close
to his body. What happens to his rotational kinetic energy about the axis of rotation?
A) It changes, but it is impossible to tell which way.
B) It increases.
C) It does not change.
D) It decreases.
The current through a 50. Ω resistor is I = 0.80 sin (240. t) amperes.
(a) What is the peak current?
(b) What is the rms current?
Water flows through a horizontal pipe of cross-sectional area 10. cm2 at a pressure of
0.25 atm. The flow rate is 1.0 L/s. At a valve, the effective cross-sectional area of the
pipe is reduced to 5.0 cm2. What is the pressure at the valve?
A) 7.7 x 103 Pa
B) 0.200 atm
C) 0.112 atm
D) 0.235 atm
E) 0.157 atm
If a new force were discovered that had a range on the order of 10-18 meters:
(a) predict the mass of the exchange particle.
(b) how long is conservation of energy violated in the exchange of this particle?
Two metal rods are made of the same material and have the same cross-sectional area.
The two rods differ only in their lengths which we call L and 3L, respectively. You heat
the two rods from the same initial temperature to the same final temperature. You
observe that the short rod expands its length by an amount ΔL. The amount by which
the length of the long rod will expand must be
A) ΔL.
B) ΔL.
C) 2ΔL.
D) 3ΔL.
E) 9ΔL.
When a hologram is illuminated with a beam of coherent light, it produces
A) both a real and a virtual image.
B) only a real image of the object.
C) only a virtual image of the object.
A proton and electron are separated by 3.5 nm.
(a) What is the magnitude of the force on the electron?
(b) What is the magnitude of the force on the proton?
(c) What is the electric field of the proton at the electron position?
The surface water temperature on a large, deep lake is 3C. A sensitive temperature
probe is lowered several m into the lake. What temperature will the probe record?
A) a temperature warmer than 3C
B) a temperature less than 3C
C) a temperature equal to 3C
Ten meters away from a long straight wire, the field is 10-4 Tesla. What current flows
through the wire?
Which of the graphs in Fig. 17-5 indicates that the material is likely a semiconductor?
A) graph a
B) graph b
C) graph c
D) graph d
The escape speed from the moon is what fraction of Earth’s escape speed?
(Earth/Lunar mass ratio = 81.3; Earth/Lunar radius ratio = 3.67)
A) 0.045
B) 0.17
C) 0.61
D) 0.41
E) 0.21