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When a geyser erupts, pressure at its bottom
A) increases.
B) decreases.
C) is unaffected
D) all of the above
E) none of the above
Electric forces within an atomic nucleus tend to
A) hold it together.
B) push it apart.
C) neither of these
Angular momentum is greater for a satellite when it is at the
A) apogee (farthest point).
B) perigee (nearest point).
C) same at apogee and perigee
The support force on a 10-N book at rest on a table is
A) slightly less than 10 N.
B) 10 N.
C) slightly greater than 10 N.
D) dependent on the position of the book.
If an astronaut landed on a planet composed of antimatter, there would be an explosion
and the
A) planet would annihilate.
B) astronaut would annihilate.
C) astronaut and an equal amount of planet antimatter would both annihilate.
A metal block has a density of 5000 kg per cubic meter and a volume of 2 cubic meters.
What is the block's mass?
A) 1000 kg
B) 2500 kg
C) 5000 kg
D) 10,000 kg
E) none of the above
A 1000-kg car and a 2000-kg car are hoisted to the same height. Raising the more
massive car requires
A) less work.
B) as much work.
C) twice as much work.
D) four times as much work.
E) more than four times as much work.
Double-pane windows contain nitrogen rather than air to prevent
A) gas escape.
B) thermal conduction.
C) condensation.
D) heat flow.
A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N
when the rock is submerged. The density of the rock is
A) the density of water.
B) 1.5 times the density of water.
C) 2.5 times the density of water.
D) 3.5 times the density of water.
E) none of the above
As soon as a ball rolls off the edge of a table
A) it is not acted on by any forces.
B) it is not acted on by any horizontal forces.
C) has a zero net force acting on it.
D) none of the above
Electromagnetic induction occurs in a coil when there is a change in
A) electric field intensity in the coil.
B) magnetic field intensity in the coil.
C) electromagnetic polarity.
D) none of the above
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
An open freight car rolls friction free along a horizontal track in a pouring rain that falls
vertically. As water accumulates in the car, the car's speed
1) increases.
2) decreases.
3) remains the same.
This is best explained by the principle of
4) inertia.
5) momentum conservation.
6) energy conservation.
7) Newton's 2nd law.
A 1-centimeter cubed sugar cube scaled up by a factor of 10 has a volume of
A) 10 cm3.
B) 100 cm3.
C) 1000 cm3.
D) none of the above
The speed of a sound wave in air depends on
A) its frequency.
B) its wavelength.
C) air temperature.
D) all of the above
E) none of the above
When you shake an apple to and fro, you're shaking
A) energy.
B) nothing.
C) the universe.
Which of the following expands more when the temperature is increased? Equal
volumes of
A) iron.
B) wood.
C) ice water.
D) helium.
E) all expand the same.
In one word, how can water in the power plant of a nuclear submarine far exceed 100C?
A) conductivity
B) evaporation
C) condensation
D) pressure
E) vaporization
Because of trapped air inside, snow is a
A) good conductor.
B) good insulator.
C) both a good insulator and a poor conductor.
D) none of the above
High-quality energy in natural processes has a tendency to transform into
A) higher quality energy.
B) lower quality energy.
C) internal energy.
D) entropy.
E) none of the above
A chain reaction progresses when the average number of liberated neutrons that cause
further fissions is
A) zero.
B) less than one.
C) one or more.
D) none of the above
When wind encounters a wind turbine that produces energy, wind speed on the
downside of the blades is
A) slowed.
B) speeded up.
C) not affected.
A bow wave is produced when a speed boat moves
A) nearly as fast as the waves it produces.
B) as fast as the waves it produces.
C) faster than the waves it produces.
D) none of the above
The resultant of a 40-N force at right angles to a 30-N force is
A) 30 N.
B) 40 N.
C) 50 N.
D) greater than 50 N.
Jason weighs 150 N and sits on his big brother's shoulders. Big brother weighs 400 N.
The support force supplied by the floor must be
A) 150 N.
B) 400 N.
C) 550 N.
D) more than 550 N.
A 100-W lamp glows brighter than a 25-W lamp. The electrical resistance of the 100-W
lamp is
A) less.
B) greater.
C) the same.
Suppose the Moon had twice the diameter but the same mass and same orbital distance
from Earth. In that case, the high tides on Earth would be
A) higher.
B) lower.
C) unequal in size.
D) practically the same.
E) none of the above
When a boat sails from fresh water to salt water, the boat will float
A) lower in the water.
B) higher in the water.
C) at the same water level.
The element gold contains
A) gold atoms.
B) atoms that combine to produce gold.
C) gold atoms plus various slightly lighter and heavier atoms.
D) none of the above
Which of these expands when the temperature is lowered?
A) iron
B) wood
C) ice water
D) helium
E) none of the above
Assuming that xenon (atomic number 54) and krypton (atomic number 36) have the
same temperature and pressure, in which gaseous medium does sound travel faster?
A) Xenon
B) Krypton
C) a mixture of both
D) the same in both
