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Compared with falling on a stone floor, a wine glass may not break when it falls on a
carpeted floor because the
A) carpeted floor provides a smaller impulse.
B) stopping time is shorter on the carpet.
C) stopping time is longer on the carpet.
D) carpet provides a smaller impulse and a longer time.
For viewing tiny objects in a microscope, diffraction is
A) helpful.
B) a hindrance.
C) not a factor.
A 1-kg ball dropped from 2 m rebounds only 1.5 m after hitting the ground. The amount
of energy converted to heat is about
A) 0.5 J.
B) 1.0 J.
C) 1.5 J.
D) 2.0 J.
E) more than 2.0 J.
A mirage is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations.
A floating leaf oscillates up and down two complete cycles in one second as a 10-meter
long water wave passes by. What is the wave's speed?
A) 2 m/s
B) 10 m/s
C) 20 m/s
D) 40 m/s
E) more than 40 m/s
The buoyant force acting on a 10-ton ship floating in the ocean is
A) less than 10 tons.
B) 10 tons.
C) more than 10 tons.
D) depends on density of sea water
A light woman and a heavy man jump from an airplane at the same time and open their
same-size parachutes at the same time. Which person will get to a state of zero
acceleration first?
A) The light woman
B) The heavy man
C) Both should arrive at the same time.
D) not enough information
Which of the following is NOT a compound?
A) air
B) ammonia
C) water
D) salt
E) all are compounds
When a change occurs in the magnetic field in a closed loop of wire
A) a voltage is induced in the wire.
B) a current is created in the loop of wire.
C) electromagnetic induction occurs.
D) all of the above
E) none of the above
Compared to the huge force that attracts an iron tack to a strong magnet, the force that
the tack exerts on the magnet is
A) relatively small.
B) equally huge.
C) inversely proportional to their masses.
The beam in a cathode-ray tube is composed of
A) photons.
B) electrons.
C) both of these
D) neither of these
When a rainbow is seen as a complete circle from an airplane, the airplane's shadow is
A) in the center of the rainbow.
B) in the lower part of the rainbow.
C) in the upper part of the rainbow.
D) totally outside the rainbow.
E) nowhere, for there is no shadow.
Interference is a property of
A) sound waves.
B) water waves.
C) light waves.
D) all of the above
E) none of the above
An iron core in a transformer
A) guides magnetic field lines.
B) shields unwanted external electric or magnetic fields.
C) separates the primary and secondary regions.
D) reduces energy losses.
Hydro and wind power are indirect forms of
A) solar energy.
B) fossil fuels deep down.
C) nuclear energy in Earth's interior.
D) none of the above
The stretching out of time due to motion is called time
A) stretching.
B) dilation.
C) contraction.
D) warp.
E) expansion.
The major advantage of MHD generators over conventional generators is that MHD
generators
A) do not use electromagnetic induction.
B) do not require magnets.
C) require no power input.
D) all of the above
E) none of the above
You're driving down the highway and a bug spatters into your windshield. Which
undergoes the greater change in momentum during the time of contact?
A) the bug
B) your car
C) both the same
The two measurements necessary for calculating average speed are
A) acceleration and time.
B) velocity and time.
C) distance and time.
D) distance and acceleration.
E) velocity and distance.
Which task requires more work?
A) lifting the 50-kg sack 2 meters
B) lifting the 25-kg sack 4 meters
C) both require the same
D) need more information
When air drag affects the motion of projectiles, they don't travel
A) as high.
B) as far.
C) both of these
D) neither of these
In most cases, which expands more for comparable changes in temperature?
A) solids.
B) liquids.
C) gases.
D) all expand about equally.
A spinning tossed baseball veers off course in the direction of
A) crowded streamlines.
B) non-crowded streamlines.
C) onward-coming streamlines.
When sound travels faster near the ground than above, bending of sound tends to be
A) upward.
B) downward.
C) to the left.
D) to the right.
E) none of the above
A quantum of light is called
A) a proton.
B) a neutron.
C) an electron.
D) a neutrino.
E) none of the above
Which nucleus has the greatest neutron/proton ratio?
A) iron
B) gold
C) thorium
D) uranium
Although the energy per coulomb of a high-voltage party balloon is high, the energy
transfer that occurs if you touch it is low due to
A) the relatively small amount of charge.
B) rubber being a poor conductor.
C) the small electric potential.
D) all of the above
Two spaceships approaching each other move at very close to the speed of light, each
sending a beam of light to the other. Each measures the speed of light from the other
spaceship as
A) slightly less than c.
B) c.
C) slightly greater than c.
D) much greater than c.
A 60-W and a 100-W light bulb are connected in series to a 120-V outlet. Which bulb
draws more current?
A) 60-W bulb
B) 100-W bulb
C) both the same.
How long a tuning fork vibrates when its handle is held against a table is most related to
A) its frequency.
B) resonance.
C) the conservation of energy.
D) the length of its prongs.
When you compress air with a tire pump, the air temperature in the tire
A) increases.
B) decreases.
C) remains unaffected.
D) none of the above
A pot that falls from a ledge and hits the ground 45 m below hits the ground at
A) 30 m/s.
B) 60 m/s.
C) 120 m/s.
D) more than 120 m/s.
Which will NOT bend when moving in a magnetic field?
A) alpha particle
B) beta particle
C) gamma ray
D) all bend the same
A high-frequency sound source produces a high
A) speed.
B) amplitude.
C) pitch.
D) all of the above
E) none of the above
