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Which will melt more ice when placed on its surface, a kilogram of wood or a kilogram
of iron of the same high temperature?
A) 1 kg of wood.
B) 1 kg of iron.
C) both the same
D) neither of these
The amount of light from an incandescent lamp that is transmitted through an ideal
Polaroid filter is half, and through a classroom Polaroid filter is
A) less than half.
B) more than half.
C) half.
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
A thin film appears yellow when illuminated with white light. The color being cancelled
by destructive interference is
A) red.
B) green.
C) white.
D) blue.
E) none of the above
Pseudoscience is best characterized as being
A) new age.
B) an alternate view to be taken seriously.
C) fake.
D) all of the above
Which of the following has the longer wavelength?
A) a low-energy electron
B) a high-energy electron
C) both the same
D) none of the above
Heavy atoms are not appreciably larger in size than light atoms because the nuclei of
heavy atoms have more
A) mass.
B) electric charge.
C) nucleons.
D) all of the above
E) none of the above
If a pencil's length and diameter are both multiplied by 10, then its volume is multiplied
by
A) 10.
B) 100.
C) 1000.
D) 10,000.
E) none of the above
In a mixture of hydrogen gas, oxygen gas, and nitrogen gas, the molecules with the
greatest average speed are those of
A) hydrogen.
B) oxygen.
C) nitrogen.
D) all the same
The fact that gasoline overflows a full tank on a hot day is evidence that
A) gasoline expands more with increasing temperature than its tank.
B) the tank contracts while gasoline expands with temperature.
C) both of these
D) neither of these
An outcome of universal gravitation is that
A) planets aren't cubes with sharp corners.
B) its discovery prompted other laws of nature.
C) prediction and discovery of planets.
D) all of the above
A catenary in nature is evident in
A) eggs.
B) a necklace drooping between your fingers.
C) the domes of some modern buildings.
D) all of the above
Eight little spheres of mercury coalesce to form a single sphere. Compared to the
combined surface areas of the eight little spheres, the surface area of the big sphere is
A) less.
B) the same.
C) greater.
A red-hot piece of coal will cool quicker in a
A) cold room.
B) warm over.
C) both the same.
The circular path of a satellite orbiting Earth is characterized by a constant
A) speed.
B) acceleration.
C) radial distance.
D) all of the above
E) none of the above
As more lamps are connected in a parallel circuit, the overall current in the power
source
A) increases.
B) decreases.
C) stays the same.
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.
A block of wood with a piece of iron tied to the top of it floats in a bucket of water. If
the wood and iron are turned over so that the iron is submerged beneath the wood, the
water level at the side of the bucket
A) rises.
B) falls.
C) remains the same.
Compared with air pressure on the outside, air pressure inside an inflated stretched
balloon is
A) less.
B) equal.
C) greater.
D) need more information
An egg rests at the bottom of a bowl filled with water. When salt is slowly added to the
water the egg rises and floats, from which we conclude
A) salt water is denser than fresh water.
B) salt water is denser than an egg.
C) both of these
D) neither of these
Monochromatic light is light of a single
A) wavelength.
B) frequency.
C) color.
D) all of the above
E) none of the above
A lunar month is about 28 days. If the Moon were farther from Earth than it is now, the
lunar month would be
A) less than 28 days.
B) about 28 days.
C) more than 28 days.
D) need more information
A beam is under stress when it carries a load. The part of a beam where no tension or
compression occurs is the
A) upper or lower flange.
B) neutral layer.
C) neither of these
To produce an acceleration to a system there
A) must be a net force on the system.
B) may or may not be a net force on the system.
C) must be acceleration outside the system also.
An excited hydrogen atom is capable of emitting radiation of
A) a single frequency.
B) three frequencies.
C) many more than three frequencies.
For absorption spectra to exist
A) the light source must be a gas.
B) partially absorbent material must exist between the light source and the spectroscope
slit.
C) the spectroscope must be equipped with an absorption cell.
D) all of the above
E) none of the above
Phil leans over the edge of a cliff and throws a rock upward at 5 m/s. Neglecting air
resistance, two seconds later the rock's speed is
A) zero.
B) 5 m/s.
C) 10 m/s.
D) 15 m/s.
E) none of the above
The rotational inertia of your leg is greater when your leg is
A) straight.
B) bent.
C) same either way
The inversion of your image in a plane mirror is actually an inversion of
A) left-right.
B) up-down.
C) front-back.
D) all of the above
The voltage induced in self-inductions is
A) always in a direction opposing the changing voltage that produced it.
B) likely higher than the changing voltage that causes it.
C) both of these
D) neither of these
