For lunar tides to occur in the human body
A) most of the body would have to be in the liquid state.
B) Earth’s gravitation would have to be incredibly small.
C) parts of the body would have to be appreciably closer to the Moon than other parts.
D) none of the above
Water waves pass by a piece of cork floating on the water that bobs up and down one
complete cycle each second. The waves are 2 meters long. What is the speed of the
wave?
A) 0.25 m/s
B) 0.50 m/s
C) 1.0 m/s
D) 2 m/s
E) 4 m/s
The operation of a cloud chamber relies on
A) magnetization.
B) evaporation.
C) acceleration.
D) polarization.
E) condensation.
A 60-W and a 100-W light bulb are connected in parallel to a 120-V outlet. Which bulb
draws more current?
A) 60-W bulb
B) 100-W bulb
C) both the same.
One reason for the higher pitch of your voice after you’ve inhaled some helium is that
sound travels
A) slower in helium than in air.
B) faster in helium than in air.
C) the same speed in helium but with a longer wavelength.
A ball is thrown upward and caught when it returns. Compared with its initial speed and
in the presence of air resistance, the speed with which it is caught is
A) more.
B) less.
C) the same.
D) need more information.
The darkness of clouds is due to
A) absorption.
B) often being in the shadow of another cloud.
C) both of these
D) neither of these
Relativity equations for time, length and momentum hold true for
A) relativistic speeds.
B) everyday low speeds.
C) both of these
D) neither of these
High-voltage wires in power lines are not high-current wires because the current in
them is
A) not the same as the current that powers the distant load.
B) proportional to the voltage drop from beginning to end of each line, rather low.
C) both of these
D) neither of these
If you measure the distance between two telephone poles with a steel tape on a very hot
day, your measured distance will be
A) a bit short.
B) a bit long.
C) the same as on an average-temperature day.
What can exist in the same place at the same time?
A) two large boulders
B) two tiny boulders
C) two waves
D) all of the above
E) none of the above
A car traveling at 22 m/s comes to an abrupt halt in 0.1 second when it hits a tree. What
is the deceleration of the car?
A) 110 m/s2
B) 220 m/s2
C) 800 m/s2
D) 880 m/s2
E) need more information
The mass of a pet turtle that weighs 10 N is about
A) 1 kg.
B) 10 kg.
C) 100 kg.
D) 1000 kg.
E) none of the above
If Burl carries Paul piggy-back while standing in the middle of a scaffold, the tensions
in the two supporting ropes would
A) cancel to zero.
B) be equal.
C) be in dynamic equilibrium.
D) more easily support Burl and Paul.
As a spaceship moves away from you at half the speed of light, it fires a probe, also
away from you at half the speed of light relative to the spaceship. Relative to you, the
probe moves at
A) 0.80c.
B) 0.87c.
C) 0.90c.
D) 0.95c.
E) c.
How fast would a light beam appear to Einstein if he were traveling in the same
direction at 90% of the speed of light?
A) 0
B) c
C) 0.1c
D) 1.10c
E) none of the above
The electric field inside the dome of a Van de Graaff generator depends on the
A) amount of external charge.
B) volume of the dome.
C) amount of charge and volume of the dome.
D) none of the above
Water can be turned to ice by
A) lowering the surrounding air pressure.
B) extracting energy.
C) both of these
D) neither of these
A total shadow is called
A) an umbra, and a partial shadow a penumbra.
B) a penumbra, and a partial shadow an umbra.
C) neither of these
An important feature of the mass spectrometer is that
A) all ions enter the device at equal speeds.
B) ions of different masses bend differently.
C) the greater an ion’s mass, the wider its circular arc.
D) a magnetic field exerts forces on moving charged particles.
E) all of the above
Earth’s atmosphere is opaque to waves that are concentrated in the
A) infrared part of the spectrum.
B) visible part of the spectrum.
C) entire electromagnetic spectrum.
If a battleship sinks in a canal lock, the water level in the lock will
A) rise.
B) fall.
C) remain unchanged.
A boy plays solitary seesaw by placing the seesaw’s fulcrum one-eighth the distance
from where he sits at one end. Which weighs more?
A) the boy
B) the seesaw
C) they have equal weights
D) need more information
Compressions and rarefactions are characteristics of
A) longitudinal waves.
B) transverse waves.
C) both of these
D) need more information
As more lamps are connected in a series circuit, the overall current in the power source
A) increases.
B) decreases.
C) stays the same.
Refraction of sound can occur in
A) air.
B) water.
C) both of these
D) neither of these
When an electron passes through the magnetic field of a horseshoe magnet, the
electron’s
A) speed is increased.
B) direction is changed.
C) both of these
D) neither of these
Newton’s rings illustrate
A) refraction.
B) reflection.
C) dispersion.
D) polarization.
E) interference.
Figure M-3
A rock is sinking to the bottom of the lake. The buoyant force is greater at point
1) A.
2) B.
3) C.
4) equal at all levels.
This follows from the fact that
5) pressure increases with depth.
6) the same weight of water is displaced at any depth.
7) the water is appreciably more compressed with increasing depth.
8) position B provides a moderate answer, between the extremes.
The energy released in both fission and fusion is mainly in the form of
A) kinetic energy of fragments.
B) alpha radiation.
C) beta radiation.
D) gamma radiation.
E) none of the above
When Nellie hangs suspended from a pair of ropes that are not vertical, the tension in
each rope is
A) less than half her weight.
B) half her weight.
C) more than half her weight.
D) her weight.
A heat pump can
A) cool an environment.
B) warm an environment.
C) both of these
D) neither of these
Which of the following is an inert gas?
A) Hydrogen
B) Helium.
C) Carbon
D) Oxygen