A proton (1.67 10-27 kg) is accelerated to 99.8% the speed of light. How much energy
did the accelerator have to impart?
A) 14.8 GeV
B) 13.9 GeV
C) 38.9 GeV
D) 7.52 GeV
E) 223. GeV
A bar magnet is dropped, N pole down, so it falls through a horizontal loop of wire. As
it leaves the loop, the induced current (viewed from above) is:
A) clockwise
B) counterclockwise
C) zero
Two beams of coherent light travel different paths arriving at point P. If the maximum
constructive interference is to occur at point P, the two beams must
A) arrive 180 out of phase.
B) arrive 90 out of phase.
C) arrive 45 out of phase.
D) travel paths that differ by a whole number of wavelengths.
E) travel paths that differ by an odd number of half-wavelengths.
Suppose that a source of sound is emitting waves uniformly in all directions. If you
move to a point twice as far away from the source, the frequency of the sound will be
A) unchanged.
B) half as great.
C) as great.
D) twice as great.
E) one-fourth as great.
60. mi/h is approximately
A) 20. m/s.
B) 120. m/s.
C) 30. m/s.
D) 60. m/s.
E) 30. km/h.
The charge carried by one electron is e = -1.6 10-19 C. The number of excess electrons
necessary to produce a charge of 1.0 C is
A) 6.3 1018.
B) 1.6 1019.
C) 6.3 109.
D) 6.3 106.
E) 1.6 1018.
The reason that you do not observe a Doppler shift when you listen to the car radio
while driving is that
A) the source and observer are moving at the same speed.
B) the air inside the car is moving at the same speed as the car.
C) the speed of the car is too slow compared to the speed of sound.
D) the speed of the car is too fast compared to the speed of sound.
E) there is a Doppler shift but we don’t notice it.
In an AC circuit the voltage varies as V = 96. sin (277 t) volts.
(a) What is the rms voltage?
(b) What is the frequency?
FIGURE 17-6
In the graph shown in Fig. 17-6, what physical quantity does the slope represent?
A) current
B) energy
C) resistivity
D) conductivity
E) resistance
A 500-W device is connected to a 100-V power source. What current flows through this
source?
A) 50,000 A
B) 200. mA
C) 5.00 A
D) 20.0 A
E) 1.60 1018 electrons/s
If one uses the classical expression for kinetic energy (1/2 m v2) for a particle traveling
at half the speed of light, the result will be deficient by how many percent?
A) 13%
B) 7%
C) 1%
D) 24%
E) 27%
The following statements refer to man-made, artificial satellites in orbit around Earth.
Which is an accurate statement?
A) The velocity required to keep a satellite in a given orbit depends on the mass of the
satellite.
B) The period of revolution of a satellite moving about the Earth is independent of the
size of the orbit it travels.
C) A satellite in a large diameter circular orbit will always have a longer period of
revolution about the Earth than will a satellite in a smaller circular orbit.
D) It is possible to have a satellite traveling at either a high speed or at a low speed in a
given circular orbit.
E) Only circular orbits are possible for artificial satellites.
If one doubles the tension in a violin string, the fundamental frequency of that string
will be how many times the original frequency?
A) 4
B) 2
C)
D)
E) 23
The magnification M = -di/do is the ratio of image to object
A) angular size.
B) distance.
C) focal distances.
D) heights.
A race car, traveling at a constant speed of 50 m/s, drives around a circular track of
radius 250 m. What angular acceleration does it experience?
A) zero
B) 1.0 104 rad/s2
C) 6.3 102 rad/s2
D) 1.0 101 rad/s2
E) 2.0 104 rad/s2
Angular magnification of a magnifying glass is largest when the image is at
A) the near point.
B) the focal point.
C) the pupil of the eye.
D) infinity.
E) the far point.
In the equation PV = NkT, the k is known as
A) Avogadro’s number.
B) Boltzmann’s constant.
C) Planck’s constant.
D) the spring (compressibility) constant.
E) compressibility.
What is the cosine of 55?
A) 0.6
B) 0.57
C) 0.574
D) 0.5736
E) 0.57360
FIGURE 5-10
The force that a squirrel exerts on a nut it has found is observed over a 10. second
interval, as shown in Fig. 5-10. What was the average power exerted by the squirrel?
A) zero
B) 1.3 W
C) 2.5 W
D) 2.2 W
E) 5.0 W
When waves interfere, the result is ________ original waves (“they interfere”).
A) always smaller than
B) always larger than
C) always the same as
D) sometimes smaller than, sometimes larger than
Which isotopes are radioactive?
A) none
B) some
C) all
D) even numbered
E) odd numbered
If 50 g of material at 100C is mixed with 100 g of water at 0°C, the final temperature is
40°C. What is the specific heat of the material?
A) 0.33 kcal/kg ∙ C°
B) 0.75 kcal/kg ∙ C°
C) 1.33 kcal/kg ∙ C°
D) 7.5 kcal/kg ∙ C°
E) 33 kcal/kg ∙ C°
Fiber optics depends upon the phenomenon of
A) total internal reflection.
B) diffuse reflection.
C) polarization.
D) dispersion.
E) absorption.
FIGURE 12-4
A cyclic process is carried out on an ideal gas such that it returns to its initial state at the
end of a cycle. If the process was carried out in a counter-clockwise sense around the
enclosed area, as shown on the p-V diagram in Fig. 12-4, then that area represents
A) the heat added to the ideal gas.
B) the heat that flows from the ideal gas.
C) the work done by the ideal gas.
D) the work done on the ideal gas.
Controlled fusion has been difficult to achieve primarily due to
A) the high temperatures required to overcome Coulomb repulsion.
B) negligible proton cross section.
C) the difficulty of slowing the fusion neutrons.
D) the weak interaction.
FIGURE 19-2
Consider a magnetic field pointing out of this page, as shown in Fig. 19-2. An electron
moving on the page toward the right will
A) curve upward (path a).
B) continue straight ahead (path b).
C) curve downward (path c).
D) slow down.
E) speed up.
A 50.0-g sample of a material at 80.0C is dropped into a calorimeter containing 100.0 g
of water at 20.0°C. When the mixture reaches thermal equilibrium, it is at a temperature
24.0°C. If heat transfer to the walls of the calorimeter is negligible, what is the specific
heat of the material?
A) 0.143 cal/(g∙C°)
B) 0.322 cal/(g∙C°)
C) 0.221 cal/(g∙C°)
D) 0.437 cal/(g∙C°)
E) 0.0714 cal/(g∙C°)
In a famous experiment done at the end of the 19th century, two metal electrodes were
placed in an evacuated glass tube. A high voltage was applied between them. By using
an appropriate metal for the cathode (e.g., sodium or potassium), it was found that a
current could be made to flow when the cathode was illuminated with blue light, but no
current would flow when red light was used, no matter how bright the light. Einstein
was able to explain this strange phenomenon, and as a result, this experiment was
considered the first experimental demonstration of
A) the particle nature of light.
B) the wave nature of electrons.
C) the particle nature of electrons.
D) the wave nature of light.
E) the equivalency of electron and photons.
A mass vibrates back and forth from the free end of an ideal spring (k = 20. N/m) with
an amplitude of 0.25 m. What is the maximum kinetic energy of this vibrating mass?
A) 2.5 J
B) 1.3 J
C) 0.63 J
D) 5.0 J
E) It is impossible to give an answer since kinetic energy cannot be determined without
knowing the object’s mass.
The Department of Energy develops a new reversible engine which has a COP of 4
when operated as a refrigerator and a COP of 5 when operated as a heat pump. What is
its efficiency when operated as an engine doing work?
A) 10.%
B) 20.%
C) 25.%
D) 45.%
E) 80.%
One reason a photon could not create an odd number of electrons and positrons is that
such a process would
A) not conserve energy.
B) require photon energies that are not attainable.
C) not conserve charge.
D) result in the creation of mass.
E) defy the uncertainty principle.
The coefficient of linear expansion of lead is 29 x 10-6 K-1. What change in temperature
will cause a 10-m long lead bar to change in length by 3.0 mm?
A) 5.0 K
B) 10 K
C) 15 K
D) 20 K
E) 25 K
What change in wavelength is expected when X-rays are scattered at 90?
A) no change at this angle
B) 4.84 x 10-3 nm
C) 2.42 x 10-3 nm
D) 1.18 x 10-3 nm
E) 3.75 x 10-3 nm
A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has
a radius of curvature of 12. cm for the 1st surface and 24. cm for the 2nd.
(a) What is the focal length of this lens when used in air?
(b) If used under water (n = 1.33), what is the focal length?
How “slow” must a 200. gram ball move to have a deBroglie wavelength of 1.0 mm?
The sum of two vectors has the smallest magnitude when the angle between these two
vectors is
Determine the number of significant figures in 0.055 cm.
A bicycle wheel has an outside diameter of 66 cm. How far does a point on the rim
travel when the wheel rotates through an angle of 70?
If we learn that F = G mM/d2 where the units are F:Newtons, m:kg, M:kg, and
d:meters; what are the units of G?
State Newton’s 3rd law in your own words.
State the law of reflection.
Complete the following nuclear decay equation:
Na + ________ → Ne
Starting with AC-227, assume the following sequence of decays occur: (1st) α decay;
then (2nd) β- decay; and finally (3rd) alpha decay. Determine the correct isotopic
product after each process has occurred sequentially.
What is the reactance of a 1.0 mH inductor at 60 Hz?
Match retina to the best description above.
The Earth is divided into 24 time zones, in each of which local time differs by 1 hour.
At 45 N latitude, what is the width of a time zone? (The Earth’s radius is 6370 km. 45 N
latitude is about as far North as Portland, Oregon, and is halfway between the equator
and the North pole.)
A metallic surface is illuminated with light of wavelength 400. nm. If the work function
for this metal is 2.4 eV, calculate the kinetic energy of the ejected electrons, in
electron-volts.
For what frequency range is the reactance of a 3.3 μF larger than a 3.3 Ω resistance
where the capacitor, resistance, and a 3.3 mH inductor are in series?
A bat, flying due east at 2 m/s, emits a shriek that is reflected back to it from an
oncoming insect flying directly toward the bat at 4 m/s. The insect is 20 m from the bat
at the instant the shriek is emitted. Sound travels 340 m/s in air. After what elapsed time
does the bat hear the reflected echo?