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 the ground first?
A) The light woman
B) The heavy man
C) Both should arrive at the same time.
D) not enough information
Answer:
An automobile and a golf cart traveling at the same speed collide head-on. The impact
force is
A) greater on the automobile.
B) greater on the golf cart.
C) the same for both.
Answer:
A 10-kilogram block with an initial velocity of 10 m/s slides 10 meters across a
horizontal surface and comes to rest. It takes the block 2 seconds to stop. The stopping
force acting on the block is about
A) 5 N.
B) 10 N.
C) 25 N.
D) 50 N.
E) none of the above
Answer:
In perceiving its environment, a dolphin makes use of
A) echoes.
B) the Doppler effect.
C) ultrasound.
D) all of the above
E) none of the above
Answer:
An astronaut on another planet drops a 1-kg rock from rest. The astronaut notices that
the rock falls 2 meters straight down in one second. On this planet, how much does the
rock weigh?
A) 1 N
B) 4 N
C) 5 N
D) 10 N
Answer:
When vapor transforms to a plasma, energy must be
A) absorbed by the vapor.
B) released from the vapor.
C) both of these
D) neither of these
Answer:
An electric diode is useful for
A) storing electrical energy.
B) boosting voltage.
C) limiting current.
D) voltage modification.
E) changing ac to dc.
Answer:
Which of the following is a gas?
A) lithium
B) carbon
C) neon
D) sodium
Answer:
A hospital patient confined to bed will be less likely to develop bed sores with a
A) firm mattress.
B) soft mattress.
C) water bed.
D) none of these will help.
Answer:
Which of these is a transverse wave?
A) a Slinky shaken to and fro.
B) a radio wave
C) a sound wave
D) all of the above
E) none of the above
Answer:
If three primary colors of light shine on a white wall and produce a white spot, the
primaries must be
A) additive.
B) subtractive.
C) multiplicative.
D) divisive.
Answer:
Tidal forces in general are the result of
A) two or more sources of gravitation.
B) a combination of any kind of forces acting on a body.
C) unequal forces acting on different parts of a body.
D) the inverse-square law.
E) unequal fluid flow.
Answer:
A bridge is more likely to be ice covered than the roadway on a cold day because
A) a bridge is more conducting than ground.
B) a bridge is more commonly wet than ground.
C) heat upwelling from the ground below is absent on a bridge.
D) none of the above
Answer:
As a piece of metal with a hole in it cools, the diameter of the hole
A) increases.
B) decreases.
C) remains the same.
Answer:
Microscopic slush in ice water tends to make water density
A) lower.
B) higher.
C) sustain at one value.
Answer:
The length of a 100-meter long spaceship passing by you at 0.87c is seen to be
A) 50 m.
B) 87 m.
C) 100 m.
D) 125 m.
E) 150 m.
Answer:
The glare seen from water is largely
A) horizontally polarized.
B) vertically polarized.
C) unpolarized.
Answer:
Systems alone tend to move toward a state of
A) less entropy.
B) more entropy.
C) no entropy.
D) none of the above
Answer:
The round spots of light on the ground beneath a tree on a sunny day are images of
A) the openings between leaves above.
B) nothing in particular.
C) the Sun.
Answer:
A bicycle that travels twice as fast as another when braking to a stop will skid
A) twice as far.
B) four times as far.
C) eight times as far
D) sixteen times as far.
E) depends on the bike’s mass
Answer:
A pair of wires support a heavy painting. Tension in the wires is greater when they are
A) vertical.
B) not vertical.
C) the same regardless of the wire orientation.
D) none of the above
Answer:
An atom that emits light of a certain frequency is
A) not likely to absorb that same frequency.
B) an absorber of light of the same frequency.
C) fluorescent.
D) none of the above
Answer:
If you rub an inflated balloon against your hair and place the balloon against the wall it
will stick to the wall, illustrating
A) Coulomb’s law.
B) conduction and insulation.
C) charge polarization.
D) voltage.
Answer:
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
Answer:
A beam of singly-charged ions entering a magnetic field are swept into circular paths.
The wider paths are those of
A) the lighter ions.
B) the heavier ions.
C) neither particularly.
Answer:
Stars twinkle when seen from Earth. When seen by an astronaut on the Moon, stars
A) twinkle more.
B) twinkle less.
C) don’t twinkle.
Answer:
A clock on the surface of a shrinking star will run progressively
A) slower.
B) faster.
C) no difference
Answer:
Two vehicles with equal magnitudes of momentum traveling at right angles to each
other undergo an inelastic collision. The magnitude of momentum for the combined
wreck is
A) the same as the magnitude of momentum of either car before collision.
B) less than the magnitude of momentum of either car before collision.
C) greater than the magnitude of momentum of either car before collision.
D) none of the above
Answer:
Compared to ultraviolet waves, the wavelength of infrared waves is
A) shorter.
B) the same.
C) longer.
Answer:
Plutonium is radioactively toxic
A) in any form.
B) although less toxic than radium.
C) both of these
D) neither of these
Answer:
A standing wave is likely produced when
A) two waves overlap.
B) a wave reflects upon itself.
C) the speed of the wave is zero or near zero.
D) the amplitude of a wave exceeds its wavelength.
Answer:
A compass needle in a magnetic field
A) experiences a torque.
B) experiences a pair of torques.
C) may experience a pair of torques.
Answer:
Figure V-1
A block is pulled across a floor as shown in the vector diagram. The force vector F has
the greater component in the
1) horizontal direction,
2) vertical direction,
and this component is
3) larger than the vector F.
4) smaller than the vector F.
5) equal to the vector F.
Answer:
Figure L-3
The radiation curve is a plot of light intensity versus frequency for an incandescent
source such as a glowing lamp filament. If the source of light were excited atoms in the
gaseous phase, the radiation curve would look like
1) I.
2) II.
3) III.
4) IV.
The plot shown in IV is of
5) monochromatic light.
6) a very bright source.
7) light that has passed through a thin slit.
Answer:
Which of the following expands most when temperature is decreased?
1) iron
2) ice water
3) helium
4)All expand the same.
Which of the following contracts most when temperature is decreased?
5) iron
6) ice water
7) helium
8) All contract the same.
Answer:
If in the absence of external forces, a rotating ball of hot gas cools and contracts, its rate
of rotation
1) decreases
2) remains essentially the same
3) increases
and its angular momentum
4) decreases.
5) remains essentially the same.
6) increases.
Answer:
Figure N-4
Each group in a tug-of-war pulls with 1000 N on each side of the rope. The net force on
the rope is
1) 0 N
2) 500 N
3) 1000 N
4) 2000 N
and the tension within the rope is
5) 0 N.
6) 500 N.
7) 1000 N.
8) 2000 N.
Answer:
Consider a sample of water at 6oC. If the temperature is slightly increased, the volume
of water
1) increases.
2) decreases.
3) remains unchanged.
Suppose the water is cooled instead to 3oC. Then further cooling of it will cause its
volume to
4) increase.
5) decrease.
6) remain unchanged.
Answer:
An elephant and a feather fall through the air. The force of air resistance is
1) greater on the feather
2) greater on the elephant
3) the same on each
because
4) the feather weighs less.
5) the elephant encounters more air because of his greater size and speed.
6) each is under the influence of gravitational force alone.
Answer:
Buoyant force is greater on a submerged
1) 1-kg block of lead.
2) 1-kg block of aluminum.
3) same on each
Because
4) the aluminum block is larger.
5) they both have the same weight.
Answer:
Figure L-2
The radiation curve is a plot of light intensity versus frequency for an incandescent
source. If this light is first passed through a cool gas, the resulting radiation curve
would most probable look like
1) I.
2) II.
3) III.
This best illustrates that the atoms of gas have
4) been excited.
5) absorbed part of the light.
6) simplified selective frequencies of the transmitted light.
Answer:
cannot distinguish between observations made in an accelerating frame and a
gravitational field.
Answer:
A heavy man and a light man parachute together from a high-flying plane. The first to
attain zero acceleration will be the
1) light man
2) heavy man
3) both will attain zero acceleration at the same time.
because
4) the gravitational force on each man is the same.
5) of the lesser gravitational force acting on the lighter man.
6) air resistance will eventually counterbalance the weights of both men.
7) the lighter man will not have to fall for as long a time before air resistance equals his
weight.
Answer:
A hydrogen atom consists of a single proton and a single electron. If the distance
between the proton and the electron were doubled, the electric force would be
1) 1/4 as much,
2) 1/2 as much,
3) twice as much,
4) not enough information to say,
and if instead the distance between the electron and proton were halved, the electric
force would be
5) 1/4 as much.
6) 1/2 as much.
7) twice as much.
8) four times as much.
9) not enough information to say
Answer:
A container of hydrogen gas has the same temperature as a container of denser oxygen
gas. The gas atoms having the greater average kinetic energy are the
1) hydrogen,
2) oxygen,
3) both the same,
while the gas atoms having the greater average velocity are the
4) hydrogen.
5) oxygen.
6) both the same.
Answer:
An astronaut falling into a black hole would see events toward the singularity
1) red shifted,
2) blue shifted,
3) with no shift,
and she would see events from the outside normal universe
4) red shifted.
5) blue shifted.
6) with no shift.
Answer:
The atoms that make up a newborn baby were made
1) in the mother’s womb,
2) from the food that the mother ate,
3) in the ancient stars,
While all atoms heavier than copper were manufactured by processes
4) photosynthesis.
5) atomic fabrication.
6) supernova explosions.
7) radioactivity.
8) none of these.
Answer:
The density of an average person is about
1) 480 kg/m3 (30 lb/ft3).
2) 960 kg/m3 (60 lb/ft3).
3) 1920 kg/m3 (120 lb/ft3).
4) 2400 kg/m3 (150 lb/ft3).
From this we can see that the volume of a 120-lb person is about
5) 1 ft3.
6) 2 ft3.
7) 3 ft3.
8) 4 ft3.
9) not enough information to estimate.
Answer:
High tides are predominately produced by the
1) strong gravitational pull of the Sun,
2) centrifugal force created by Earth-Moon orbit,
3) differences in gravitational pulls of the Moon on opposite sides of Earth,
which is due to
4) rotation of Earth and Moon about the Sun.
5) Moon pulling with significantly more force on the closer side of Earth than on the
farther side.
6) the Sun’s pull on Earth being 200 times stronger than Moon’s gravitational pull.
Answer:
The thing that is different between x-rays and radio waves is
1) their charges,
2) their masses,
3) their frequencies,
4) the medium through which they travel,
5) the speeds at which they travel,
and the thing that is the same for x-rays and radio waves is
6) their masses.
7) their frequencies.
8) the medium through which they travel.
9) the speeds at which they travel.
10)none of these.
Answer: