The mass of an atomic nucleon is nearly
A) twice that of an electron.
B) four times that of an electron.
C) a thousand times that of an electron.
D) two thousand times that of an electron.
Answer:
A rock is thrown vertically into the air. At the top of its path, its acceleration is
A) zero.
B) 10 m/s2.
C) between 0 and 10 m/s2.
D) greater than 10 m/s2.
Answer:
A lamp rated at 120W 120V has a filament resistance of
A) 1 ohm.
B) 60 ohms.
C) 100 ohms.
D) 144 ohms.
E) none of the above
Answer:
To think of electric potential difference we are thinking about
A) current.
B) voltage.
C) resistance.
Answer:
A lunar eclipse occurs when the
A) Sun passes into Earth’s shadow.
B) Moon passes into Earth’s shadow.
C) Earth passes into the Sun’s shadow.
D) Earth passes into the Moon’s shadow.
Answer:
The force that acts between a pair of electrically-charged particles depends on
A) magnitude of charge.
B) separation distance.
C) both of these
D) neither of these
Answer:
The larger a turkey cooked in a conventional oven at a given temperature, the
A) more time per pound is needed.
B) less time per pound is needed.
C) the same time per pound is needed.
Answer:
A ball player wishes to determine pitching speed by throwing a ball horizontally from
an elevation 5 m above ground level. The ball lands 20 m downrange. The player’s
pitching speed is about
A) 5 m/s.
B) 10 m/s.
C) 20 m/s.
D) 25 m/s.
E) none of the above
Answer:
Which will remain the same for two identical books, one lying flat and the other
standing on an end?
A) weight
B) pressure
C) both of these
D) neither of these
Answer:
No work is done by gravity on a bowling ball that rolls along a bowling alley because
A) no force acts on the ball.
B) little distance is covered by the ball.
C) the force on the ball is at right angles to the ball’s motion.
D) the ball’s speed remains constant.
Answer:
A piece of taffy slams into and sticks to an identical piece of taffy at rest. The
momentum of the combined pieces after the collision is the same as before the collision,
but this is not true of the kinetic energy, which partly degrades into heat. What
percentage of the kinetic energy becomes heat?
A) 0%
B) 25%
C) 50%
D) 75%
E) need more information
Answer:
After a rock thrown straight up reaches the top of its path and then falls a short distance,
its acceleration is (neglect air resistance)
A) greater than at the top of its path.
B) less than at the top of its path.
C) the same as at the top of its path.
Answer:
The vertical height attained by a basketball player who achieves a hang time of a full 1
s is about
A) 0.8 m.
B) 1 m.
C) 1.2 m.
D) 2.5 m.
E) more than 2.5 m.
Answer:
The source of all waves is
A) something that vibrates.
B) energy.
C) a force of some kind.
D) all of the above
E) none of the above
Answer:
The force of Earth’s gravity on a capsule in space will lessen as it moves farther away.
If the capsule moves to twice its distance, the force toward Earth becomes
A) half.
B) three-quarters.
C) one-fourth.
D) none of the above
Answer:
Which of these sounds characterize “white noise”?
A) surf
B) rustling leaves
C) bubbling water
D) all of the above
E) none of the above
Answer:
The major difference between phosphorescent and fluorescent materials is
A) a time delay between excitation and de-excitation.
B) a difference in brightness.
C) the greenish color of phosphorescence.
D) none of the above
Answer:
Strictly speaking, to weigh less in the Northern Hemisphere, you should move to a
location farther
A) north (toward the pole).
B) south (toward the equator).
C) east.
D) west.
Answer:
Some alpha particles pass through gold foil with very little deflection mainly because
the
A) electric field is zero inside the foil.
B) atoms of gold are mostly empty space.
C) net charge of the gold atoms is zero.
D) all of the above
E) none of the above
Answer:
When boarding an airplane you bring a bag of chips. While in flight the bag puffs up,
because
A) air pressure in the air-tight bag is greater than cabin air pressure.
B) suction is occurring.
C) air pressure is affected by the Bernoulli principle.
D) all the above
E) none of the above
Answer:
The operation of a microwave oven makes use of
A) the polar nature of water molecules.
B) flip flopping of polarized molecules.
C) an oscillating electric field.
D) all of the above
E) none of the above
Answer:
The color of an opaque object is the same as the light that is
A) transmitted.
B) absorbed.
C) reflected.
D) all of the above
E) none of the above
Answer:
The first to be credited for assigning the terms positive and negative to electricity was
A) William Crookes.
B) J.J. Thomson.
C) Robert Millikan.
D) Benjamin Franklin.
E) none of the above
Answer:
Which of these investigators did NOT contribute to our knowledge of atoms?
A) Aristotle
B) John Dalton
C) Robert Brown
D) Albert Einstein
Answer:
Magnetic fields are produced by
A) a tiny fraction of moving electrical charges.
B) most moving electrical charges.
C) all moving electrical charges.
Answer:
Which piece of glass will warm up quicker in sunlight?
A) colored glass
B) clear glass
C) both the same
Answer:
Both a transverse wave and a longitudinal wave have
A) amplitude.
B) frequency.
C) wavelength.
D) speed.
E) all of the above
Answer:
The force required to maintain a body at constant velocity in free space is equal to
1) the mass of the body.
2) zero.
3) the weight of the body.
4) the force required to stop it.
5) none of these.
This is in accordance with the law of
6) inertia.
7) action/reaction.
8) gravitation.
9) energy conservation.
Answer:
Which of these vary for satellites in circular orbits?
A) speed.
B) momentum.
C) kinetic energy.
D) all of the above
E) none of the above
Answer:
A rough surface for infrared waves may be polished for
A) radio waves.
B) light waves.
C) both of these
D) neither of these
Answer:
The least buoyant force on a rock is when it is submerged
A) near the surface.
B) halfway to the bottom.
C) near the bottom.
D) none of the above
Answer: