PHYS 22908

subject Type Homework Help
subject Pages 9
subject Words 1211
subject Authors Paul G. Hewitt

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Into which stable force field can a proton be placed at rest without being acted upon by
a force?
A) magnetic field
B) electric field
C) both of these
D) neither of these
Answer:
The lower the temperature of an object, the
A) lower the frequency of radiation it emits.
B) longer the wavelengths it radiates.
C) both of these
D) neither of these
Answer:
In Heisenberg's formula, p x≥ h, the h symbolizes
A) Planck's constant.
B) an average value of Planck's constant.
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C) the peak value of Planck's constant.
D) Planck's constant divided by 2π.
E) none of the above
Answer:
Two tennis balls fall through the air from a tall building. One of them is filled with lead
pellets. The ball to reach the ground first is the
A) regular ball.
B) lead-filled ball.
C) same for both
Answer:
Hypothetically, if Planck's constant were smaller, atoms would be
A) larger.
B) smaller.
C) no different in physical size.
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Answer:
Waves emitted by the Sun and terrestrial wave emissions are
A) the same except for their frequencies and wavelengths.
B) entirely different kinds of waves.
C) identical.
Answer:
Analog sound signals are produced by
A) phonograph records.
B) CDs.
C) DVDs.
D) all of the above
E) none of the above
Answer:
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The voltage induced in self-inductions is
A) always in a direction opposing the changing voltage that produced it.
B) likely higher than the changing voltage that causes it.
C) both of these
D) neither of these
Answer:
Reports are that singer Caruso was able to shatter a crystal chandelier with his voice,
which illustrates
A) an echo.
B) sound refraction.
C) beats.
D) resonance.
E) interference.
Answer:
The percentage of electricity from nuclear power generated in recent decades in the
United States has been about
A) 10%.
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B) 20%.
C) 30%.
D) 40%.
E) more than 40%
Answer:
Which is most responsible for Earth's ocean tides?
A) Moon
B) Sun
C) both contribute equally.
Answer:
If you shine a flashlight "horizontally" from one wall to an opposite wall inside an
accelerating spaceship in deep space, you will see the light traveling
A) in a straight-line path.
B) in a parabolic path.
C) along the arc of a circle.
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Answer:
Suspend your body from a pair of vertical ropes and the tension in each rope will be
A) half your weight.
B) equal to your weight.
C) greater than your weight.
D) none of the above
Answer:
There are about as many atoms of air in our lungs at any moment as there are breaths of
air in the atmosphere of
A) a large auditorium.
B) a large city.
C) the United States.
D) the whole world.
E) none of the above
Answer:
page-pf7
When the potential energy of a satellite decreases
A) kinetic energy also decreases.
B) its kinetic energy correspondingly increases.
C) its distance from the orbiting body increases.
D) none of the above
Answer:
Between the processes of nuclear fission and fusion, radioactive by-products are more
characteristic of nuclear
A) fission.
B) fusion.
C) both of these
D) neither of these
Answer:
A common pulley acts similar to a
A) hydraulic press.
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B) gear.
C) common lever.
D) tension producer.
Answer:
The intensity of cosmic rays bombarding the Earth's surface is most at the
A) poles.
B) mid-latitudes.
C) equator.
Answer:
According to Louis de Broglie, a material particle has
A) particle properties.
B) wave properties.
C) both of these
D) neither of these
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Answer:
A force field is induced in any region of space in which
A) an electric field changes with time.
B) a magnetic field changes with time.
C) both of these
D) neither of these
Answer:
Two charged particles attract each other with a force F. If the charges of both particles
are doubled, and the distance between them also doubled, then the force of attraction
will be
A) F.
B) 2 F.
C) F/2.
D) F/4.
E) none of the above
Answer:
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The reason you can walk barefoot on red-hot coals of wood without burning your feet
mainly involves
A) low temperature of the coals.
B) low conductivity of the coals.
C) mind over matter techniques.
Answer:
A neutron will more likely slow in speed if it bounces from a
A) light-weight nucleus.
B) nucleus of moderate mass.
C) heavy nucleus.
D) none of the above
Answer:
When a lump of uranium is broken into smaller pieces, the total surface area
A) decreases.
B) remains the same.
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C) increases.
Answer:
Which of the following involves passion, talent, and intelligence?
A) art
B) literature
C) music
D) science
E) all of the above
Answer:
The nucleus that has the least mass per nucleon is
A) hydrogen.
B) iron.
C) lead.
D) uranium.
E) plutonium.
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Answer:
Small openings between leaves in a tree act as pinholes. The round spots of light cast on
the ground below are images of
A) the Sun.
B) the openings themselves.
C) both of these
D) neither of these
Answer:
Which of these is a longitudinal wave?
A) sound
B) light
C) radio
D) all of the above
E) none of the above
Answer:
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The quantity of heat that a substance can transfer relates to its
A) mass
B) specific heat capacity
C) change in its temperature.
D) all of the above
Answer:
You experience weightlessness
A) in the absence of a supporting surface.
B) momentarily when you step off a chair.
C) in a freely falling elevator.
D) all of the above
Answer:
Water can be brought to a boil by
A) applying heat.
B) reducing air pressure on its surface.
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C) both of these
D) neither of these
Answer:
Interference is a property of
A) water waves.
B) sound waves.
C) light waves.
D) all of the above
E) none of the above
Answer:
If we doubled the magnifying power of the most powerful optical microscope in the
world, we would
A) be able to see individual atoms.
B) be able to photograph individual atoms, even though we couldn't see them.
C) still not be able to see or photograph an atom.
Answer:

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