Unlock document.
This document is partially blurred.
Unlock all pages and 1 million more documents.
Get Access
A skydiver's terminal velocity will be greatest if she falls
A) head first.
B) lying flat on her back.
C) lying flat on her stomach.
D) with her parachute open.
A rock weighs 30 N on Earth and another rock weighs 30 N on the Moon. Which rock
has the greater mass?
A) the one on Earth
B) the one on the Moon
C) They have the same mass.
D) not enough information
Minimal orbital speed about Earth is about 8 km/s, and about the Moon is
A) less than 8 km/s.
B) more than 8 km/s.
C) about 8 km/s.
A message from relativity theory is that slowing the aging process
A) can occur with correct applications of physics.
B) would occur if you fell into a bottomless mine shaft.
C) can only happen to "the other guy."
Which force field can accelerate an electron?
A) electric field
B) magnetic field
C) both of these
D) neither of these
When Nellie Newton hangs at rest in the middle of a clothesline, tensions will be the
same in each side of the rope when
A) the lengths of each rope are the same.
B) the angles for both sides of the rope are equal.
C) she is in equilibrium.
As you recede from a steady light source, the wavelength of the emitted light appears
A) longer.
B) shorter.
C) the same.
A bullet fired horizontally over level ground hits the ground in 0.5 second. If it had
been fired with twice the speed it would have hit the ground in
A) less than 0.5 s.
B) 0.5 s.
C) more than 0.5 s.
A neutron bouncing off a heavy nucleus loses speed. If it instead bounces off a light
nucleus it loses
A) less speed.
B) more speed.
C) the same amount of speed.
A mosquito flying at 3 m/s that encounters a breeze blowing at 3 m/s in the same
direction has a speed of
A) 0 m/s.
B) 3 m/s.
C) 4 m/s.
D) 6 m/s.
To melt ice, add
A) temperature.
B) energy.
C) force.
D) time.
A positive ion has more
A) electrons than neutrons.
B) electrons than protons.
C) protons than electrons.
D) protons than neutrons.
E) neutrons than protons.
The Earth is closer to the Sun in January than in July, which accounts for the fact that
the highest high tides in the Northern Hemisphere occur in
A) winter.
B) spring.
C) summer.
D) none of the above
Electric shielding within a conductor is a consequence of
A) the balancing of opposing forces.
B) both the attraction and repelling nature of electricity.
C) cancellation of electric field lines.
D) all of the above
E) none of the above
The attraction between like substances, stickiness, is called
A) adhesion.
B) cohesion.
C) depends on the substances.
A boulder following a straight-line path at constant velocity has
A) a net force acting upon it in the direction of motion.
B) zero acceleration.
C) no forces acting on it.
D) none of the above
If a child swinging to and fro on a playground swing stands up, her time for a to-and-fro
swing is
A) longer.
B) shorter.
C) unchanged.
A ball is thrown vertically into the air. Because of air resistance, its time coming down
compared to its time going up is
A) less.
B) the same.
C) more.
The amount of work done on a heavy box carried by Nellie across a room at a constant
speed
A) depends on the weight of the box.
B) depends on the distance walked.
C) depends on both weight of the box and distance walked.
D) is none.
E) none of the above
A main difference between a radio wave and a light wave is
A) wavelength.
B) frequency.
C) both of these
D) neither of these
Magnification can be accomplished with a hologram when viewed with light that has a
A) longer wavelength than the original light.
B) shorter wavelength than the original light.
C) neither for holograms cannot be magnified.
Which nucleus has the greatest neutron/proton ratio?
A) iron
B) gold
C) thorium
D) uranium
Which man exerts greater pressure against the floor?
1) a 150-kg man lying on the floor
2) a 150-kg man standing on the floor
3) Both men exert the same pressure.
The reason is that
4) both men have the same weight.
5) the upright man's weight is distributed over a smaller area.
6) the man lying down has his weight equally distributed.
When radium (A = 88) emits an alpha particle, the resulting nucleus has atomic number
A) 86.
B) 88.
C) 90.
D) 92.
E) none of the above
Normally a small party balloon charged to several thousand volts will have a relatively
small amount of
A) charge.
B) energy.
C) both of these
D) neither of these
When a common fluorescent lamp is lit, the mercury vapor inside is actually in a
A) gaseous phase.
B) liquid phase.
C) plasma phase.
D) solid phase.
E) none of the above
A tow truck exerts a force of 3000 N on a car, which then accelerates at 2 m/s2. What is
the mass of the car?
A) 500 kg
B) 1000 kg
C) 1500 kg
D) 3000 kg
E) none of these
A substance that heats up relatively slowly has a
A) high specific heat capacity.
B) low specific heat capacity.
C) either of these
D) neither of these
A solid glass ball weighs 1 N. One with twice the diameter weighs
A) 1 N.
B) 2 N.
C) 3 N.
D) 4 N.
E) more than 4 N.
The temperature at which a liquid freezes is
A) affected by foreign ions.
B) the same temperature at which its solid form melts.
C) both of these
D) neither of these
The extraordinary blueness in lakes in the Canadian Rockies is the result of
A) high-altitude refraction of light.
B) glacial silt in the water scattering blue light.
C) the unique temperatures of these lakes throughout most of the year.
D) none of the above
The identities of dark energy and dark matter are
A) unknown at this time.
B) subjects of intense astronomical interest.
C) both of these
D) neither of these
Energy transfer by convection is primarily restricted to
A) solids.
B) liquids.
C) gases.
D) fluids.
E) none of the above
Kids in elementary school get this right: Which color of light gets through red glass?
A) red
B) cyan
C) none of these
If the Moon were covered with water, tidal effects caused by Earth would find the
Moon with
A) 1 tidal bulge.
B) 2 tidal bulges.
C) 3 tidal bulges.
D) 4 tidal bulges.
E) no tidal bulges.
