A mirror is rotated at an angle of 10 from its original position. How much is the rotation
of the angle of reflection?
A) 10
B) 5
C) 15
D) 20
E) 40
An arrow is shot straight up. At the top of its path, the net force acting on it is
A) instantaneously equal to zero.
B) greater than zero, but less than its weight.
C) greater than its weight.
D) equal to its weight.
E) horizontal.
The boiling point of water is at
A) 273.16 K.
B) -459. K.
C) 459.F.
D) 373.16 K.
E) 212.C.
An atom’s mass number is determined by the number of
A) neutrons in its nucleus.
B) nucleons in its nucleus.
C) protons in its nucleus.
D) alpha particles in its nucleus.
E) electron masses in its nucleus.
A 1 pF capacitor is connected in parallel with a 2 pF capacitor, the parallel combination
then being connected in series with a 3 pF capacitor. The resulting equivalent
capacitance is
A) 1.5 pF.
B) 6 pF.
C) 3 pF.
D) 4.5 pF.
E) 5 pF.
One consequence of Einstein’s theory of special relativity is that
A) absolute Earth velocity can be measured.
B) absolute velocity of stars can be measured with respect to the ether wind.
C) simultaneity is not absolute.
D) relative speed can not be measured.
E) nothing is conserved because it changes.
Albert Einstein received the 1921 Nobel Prize for his
A) Special Theory of Relativity.
B) General Theory of Relativity.
C) Theory of the Photoelectric Effect.
D) Theory of the Brownian Motion.
The rms speed of the molecules of a gas is 200 m/s at a temperature 300 K. What is the
rms speed of the molecules at 500 K?
A) 155 m/s
B) 333 m/s
C) 258 m/s
D) 556 m/s
E) 800 m/s
The change of the internal energy of an ideal gas depends upon
A) changing temperature.
B) changing pressure.
C) changing volume.
D) changing pressure and volume together.
How many orders are in the spectra formed by a grating with 3000. lines/cm
illuminated by red light of wavelength 600. nm?
A) 1
B) 5
C) 0
D) 4
E) 3
Barbara travels 20. km Northward, then travels 40. km Eastward, then continues for 50.
km in a Southward direction. What displacement will now take her back to her initial
position?
A) 30. km Westward + 40. km Northward
B) 50. km Northwest
C) 40. km Westward + 30. km Northward
D) 30. km Northward + 30. km Westward
E) 40. km Eastward + 30. km Southward
Electromagnetic radiation of wavelength 3.5 meters is which type?
A) AM-radio
B) microwaves
C) FM-radio
D) visible
E) ultraviolet
Light which reflects off a pond of water undergoes a phase shift of
A) 90.
B) 180.
C) 0.
D) 270.
E) 45.
My electric razor operates on 120. v and requires 3.0 Amperes. How much current
comes out after delivering 360. watts of power?
A) 40. A
B) 0. A
C) 3.0 A
D) 1.2 A
E) 2.4 A
Two equal mass objects (which are in thermal contact) make up a system that is
thermally isolated from its surroundings. One object has an initial temperature of 100°C
and the other has an initial temperature of 0°C. What is the equilibrium temperature of
the system, assuming that no phase changes take place for either object? (The hot object
has a specific heat capacity that is three times that of the cold object.)
A) 23°C
B) 19°C
C) 75°C
D) 50°C
E) 25°C
An Olympic athlete throws a javelin at four different angles above the horizontal, each
with the same speed: 30, 40, 60, 80. Which two throws cause the javelin to land the
same distance away?
A) 40 and 80
B) 30 and 80
C) 40 and 60
D) 30 and 60
E) 35 and 65
If the resistance in a constant voltage circuit is doubled, the power dissipated by that
circuit will
A) increase by a factor of four.
B) decrease to one-fourth its original value.
C) decrease to one-half its original value.
D) increase by a factor of two.
E) be unchanged.
Consider a submarine at a depth of 67. meters in sea water (density 1.03 grams/cc) and
the interior of the sub is at 1.0 atmosphere.
(a) What is the outside pressure at that depth?
(b) Find the total force that must be withstood by a square hatch (0.90 m square) which
leads to the sub interior.
A nuclear reaction starts with 1.71 MeV of kinetic energy and a rest energy of 28.2
GeV. If the reaction releases 1.10 MeV, what was the Q of the reaction?
A) 11.0 MeV
B) 1.10 MeV
C) 6.60 MeV
D) 0.60 MeV
E) 28.8 GeV
FIGURE 15-4
Two stationary point charges q1 and q2 are shown in Fig. 15-4 the sketch along with
some electric field lines representing the field between them. What can you deduce
from the sketch?
A) q1 is negative and q2 is positive; the magnitudes are equal.
B) q1 and q2 have the same sign; the magnitudes are equal.
C) q1 is positive and q2 is negative; the magnitude of q1 is greater than the magnitude of
q2.
D) q1 and q2 have the same sign; the magnitude of q1 is greater than the magnitude of
q2.
E) q1is positive and q2 is negative; the magnitude of q1 is less than the magnitude of q2.
A bullet shot straight up returns to its starting point in 10 s. Its initial speed was
A) 98 m/s.
B) 49 m/s.
C) 9.8 m/s.
D) 24.5 m/s.
E) 32. ft/s.
Doubling only the amplitude of a vibrating mass-on-a-spring system produces what
effect on the system frequency?
A) increases the frequency by a factor of 5
B) increases the frequency by a factor of 4
C) increases the frequency by a factor of 3
D) increases the frequency by a factor of 2
E) produces no change
The base SI unit of mass is
A) milligram.
B) gram.
C) kilogram.
D) slug.
E) newton.
A metal sphere of radius 2.0 cm carries a charge of 3.0 μC. What is the electric field 6.0
cm from the center of the sphere?
A) 4.2 x 106 N/C
B) 5.7 x 106 N/C
C) 6.4 x 106 N/C
D) 7.5 x 106 N/C
E) 9.3 x 106 N/C
What device converts mechanical energy into electrical energy?
A) solenoid
B) motor
C) generator
D) spectrometer
E) transformer
A brass rod, 4.0 m long and with a cross sectional area of 9.2 10-6 m2 is subjected to a
tension of 6.0 103 N/m2. The Young’s modulus for brass is 9.0 1010 N/m2, and the
Poisson ratio is 0.48. By how much does the volume of the rod change?
A) 6.3 x 10-7 m3
B) 0.029 m3
C) 2.7 x 10-7 m3
D) 4.0 x 10-7 m3
E) 5.2 x 10-7 m3
If a nuclide has a decay constant of 0.765 x 10-6 s-1 and contains 3.0 x 1017 nuclei
(a) what is the half life?
(b) what is its initial activity?
(c) what is the activity after 12. days?
How far from a lens of focal length 50.0 mm must the object be placed if it is to form a
virtual image magnified in size by a factor of three?
A) 33.3 mm
B) 48.0 mm
C) 38.3 mm
D) 42.2 mm
E) 54.4 mm
Light of wavelength 500 nm illuminates a soap film ( n = 1.33). What is the minimum
thickness of film that will give an interference maximum when the light is incident
normally on it?
A) 24 nm
B) 94 nm
C) 188 nm
D) 279 nm
E) 376 nm
Sound vibrations with frequencies greater than 20,000 Hz are called
A) infrasonics.
B) ultrasonics.
C) supersonics.
D) megasonics.
E) infrared.
A 12000-N car is raised using a hydraulic lift, which consists of a U-tube with arms of
unequal areas, filled with oil with a density of 800kg/m3 and capped at both ends with
tight-fitting pistons. The wider arm of the U-tube has a radius of 18.0 cm and the
narrower arm has a radius of 5.00 cm. The car rests on the piston on the wider arm of
the U-tube. The pistons are initially at the same level. What is the force that must be
applied to the smaller piston in order to lift the car after it has been raised 1.20 m? For
purposes of this problem, neglect the weight of the pistons.
A) 0.954 kN
B) 1.88 kN
C) 1.96 kN
D) 3.67 kN
E) 1.20 kN
FIGURE 4-9
A 10. kg blocks rests on a table (on Earth) and 0.50 is the coefficient of static friction,
as shown in Fig. 4-9. If someone pushes down on the block with a 48. Newton force,
what is the maximum horizontal pull (P) that will not move the block?
FIGURE 13-1
Shown in Fig. 13-1 is a graph of position vs. time for a system undergoing simple
harmonic motion. Which of the other graphs represents the system’s acceleration as a
function of time?
Fig. 2-5 represents the velocity of a particle as it travels along the x-axis. What is the
average acceleration of the particle between t = 2 s and t = 4 s?
Which of Bohr’s assumptions in creating the “Bohr atom” was revolutionary
(unclassical)?
I left five 100. watt bulbs burning in my basement for two weeks. If electricity costs me
10./kw-h, how much did the electricity cost (to the nearest dollar) to leave these bulbs
on and how many Joules of electrical energy did they consume?
Explain what happens when the angular speed of the coil in an electric generator is
increased.
A radar operator on Earth sees two spaceships moving straight at each other, each with
speed 0.60c. With what speed does the pilot of one ship see the other ship approaching?
What would be the deBroglie wavelength for 1 gram moving at “escape speed” 25,000.
mph?
Discuss the differences between distance and displacement.
At what rate are photons emitted by a 50. W sodium vapor lamp? (Assume that the
lamp’s light is monochromatic and of wavelength 589. nm.)
In attempting to jump up a waterfall, a salmon leaves the water 2.0 m from the base of
the waterfall. With what minimum speed must it leave the water in order just to make it
up a waterfall 1.6 m high?
Explain how a POSITIVE acceleration could produce a DECELERATION.
Match rods and cones to the best description above.
Using the velocity transformation formula, calculate the speed in the “rest frame” of a
particle which is seen to be moving at c in a “moving frame”.
What is the resolution limit at 400. nm, due to diffraction, of the Hubble Space
Telescope which has an aperture of 2.4 meters?
A container of ideal gas at STP undergoes an isothermal expansion and its entropy
changes by 3.66 J/K. How much work does it do?
Consider the planet Mars:
[Earth mass = 6.0 1024 kg = 9.3 Mars mass;
Earth radius = 6380.km = 1.89 Mars radius]
What is the acceleration of gravity on Mars?