The brightness of a lamp is directly related to its
A) brand.
B) place of manufacture.
C) power rating.
D) all of the above
E) none of the above
A ball rolls along a horizontal track in a certain time. If the track has a small upward
dent in it, the time to roll the length of the track will be
A) less.
B) the same.
C) more.
The primary of a transformer is the coil connected to
A) the load.
B) the Internet.
C) the input power line.
D) none of the above
The energy per photon in ultraviolet light is greater than in
A) radio waves.
B) microwaves.
C) visible light.
D) all of the above
E) none of the above
When the distance between two charges is halved, the electrical force between them
A) is reduced by 1/4.
B) halves.
C) doubles.
D) quadruples.
E) none of the above
It is commonly thought that a can of beverage will cool faster in the coldest part of a
refrigerator. Knowledge of Newton’s law of cooling
A) supports this common knowledge.
B) contradicts this common knowledge.
C) is unrelated to this common knowledge.
Which of the following is a gas?
A) lithium
B) carbon
C) neon
D) sodium
Wind blowing over the top of a hill
A) increases atmospheric pressure there.
B) decreases atmospheric pressure there.
C) does not affect atmospheric pressure there.
When water at 4oC is heated it expands. If it is instead cooled it will
A) contracts.
B) also expand.
C) neither contracts nor expands.
The wave-particle duality applies to
A) photons.
B) electrons.
C) protons
D) all of the above
E) none of the above
A primary difference between momentum and kinetic energy is
A) momenta can cancel; kinetic energy cannot.
B) kinetic energy can cancel; momenta cannot.
C) either of the above depending on circumstances
D) none of the above
One kilogram of peaches has more skin area than one kilogram of
A) blueberries.
B) grapefruits.
C) grapes.
D) all of the above
Technology is a tool that can
A) be socially beneficial.
B) be socially harmful when abused.
C) lead to a better world.
D) all of the above
A certain radioactive isotope placed near a Geiger counter registers 120 counts per
minute. If the half-life of the isotope is one day, what will be the count rate at the end of
four days?
A) 30 counts/min
B) 15 counts/min
C) 10 counts/min
D) 7.5 counts/min
E) 5 counts/min
A feather and a coin will have equal accelerations when falling in a vacuum because
A) their velocities are the same.
B) the force of gravity is the same for each in a vacuum.
C) the force of gravity does not act in a vacuum.
D) the ratio of both the feather’s and coin’s weight to mass is the same.
E) none of the above
Compared to the energy of a photon of red light, the energy of a photon of blue light is
A) less.
B) more.
C) the same.
The impulse-momentum relationship is a direct result of
A) Newton’s 1st law.
B) Newton’s 2nd law.
C) Newton’s 3rd law.
D) Newton’s law of gravity.
For a scientific hypothesis to be valid, there must be a test for proving it
A) right.
B) wrong.
C) conclusively one way or the other.
If the specific heat capacity of water were lower than it is, a watermelon in a picnic
cooler would cool in a
A) shorter time.
B) longer time.
C) the same time anyway.
As a piece of metal with a hole in it cools, the diameter of the hole
A) increases.
B) decreases.
C) remains the same.
When a karate chop breaks a board with a 3000-N blow, the amount of force that acts
on the hand is
A) zero.
B) 1500 N.
C) 3000 N.
D) 6000 N.
Two photons that have the same wavelength also have the same
A) frequency.
B) energy.
C) both of these
D) neither of these
When you adjust a telescope to get a clear image of Saturn’s rings, in a small but
measurable way you alter
A) the telescope.
B) Saturn’s rings.
C) both of these
D) neither these
The emphasis of the orange-and-apple sequence in your textbook is
A) defining systems.
B) actions equal reactions.
C) forces produce accelerations.
D) friction is a force.
E) mass is not a force.
When you shake an apple to and fro, you’re shaking
A) energy.
B) nothing.
C) the universe.
When you touch a cold piece of ice with your finger, energy flows
A) from your finger to the ice.
B) from the ice to your finger.
C) actually, both ways.
As a high-altitude balloon rises higher into the atmosphere, it undergoes a decrease in
A) volume.
B) density.
C) weight.
D) mass.
E) none of the above
Surface tension of liquids
A) increases when wetting agents are added.
B) decreases as the liquid temperature increases.
C) is about the same for all liquids.
D) results from a thin molecular membrane beneath the liquid surface.
E) keeps steel ships afloat.
Figure G-1
Pretend an object is set sliding on a huge frictionless plane in contact with the surface
of Earth as shown. Once the object is set in motion it will
1) theoretically slide to the right forever
2) slide back and forth
3) slow down and stop
because
4) of its inertia.
5) gravitational force decreases with increasing distance.
6) the object is sliding “uphill” and then “downhill” relative to the round Earth.
When the bottom string is pulled slowly in the heavy-ball-and-strings demonstration
(Figure 4.8 in your book), tension
A) in the top string is due to your pull plus the weight of the ball.
B) is about the same in both strings.
C) in the bottom string is zero.
Which concept is being illustrated when a tablecloth is quickly yanked beneath dishes
resting on a table?
A) equilibrium
B) friction
C) support force
D) inertia
Compared with Newton’s theory of gravity, Einstein’s theory is
A) an exception to the correspondence principle.
B) in accord with the correspondence principle.
C) neither of these
Thrust a magnet into the opening of a rubber band and it
A) rotates.
B) then has a current in it.
C) both of these
D) neither of these