Vibrating membranes relate to which instrument?
A) violin
B) drum
C) oboe
D) all of the above
E) none of the above
The total time it takes a projectile fired straight up at 10 m/s to reach the top of its path
and return to its starting point is about
A) 1 s.
B) 2 s.
C) 10 s.
D) 20 s.
A block of ice sliding down an incline has half its maximum kinetic energy
A) at the top.
B) at the bottom.
C) halfway down.
D) need more information
Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has twice as much
A) inertia.
B) mass.
C) volume.
D) all of the above
E) none of the above
A feather and a coin dropped in a vacuum fall with equal
A) forces due to gravity.
B) accelerations.
C) kinetic energies.
D) none of these
One kilowatt-hour is a unit of
A) energy.
B) power.
C) voltage.
D) current.
E) resistance.
Although solid matter is mostly empty space, we don’t fall through the floor because
A) atoms are constantly vibrating, even at absolute zero.
B) of nuclear forces.
C) of gravitational forces.
D) of electrical forces.
E) none of the above
The force of gravity acts on all apples on an apple tree. Some apples are twice as far
from the ground as others. For the same mass these twice-as-high apples have
A) 1/4 the weight.
B) 1/2 the weight.
C) practically the same weight.
A ball rolls off the edge of a table at the same time another ball drops vertically from
the same table. The ball to hit the floor first is the
A) rolling ball.
B) dropped ball.
C) both hit at the same time
In a 1-g gravitational field, 1 second after turning on a flashlight its beam will curve
beneath a perfectly straight line by
A) less than 4.9 m.
B) 4.9 m.
C) more than 4.9 m.
Which produces more force: driving into a very massive concrete wall with no “give,”
or having a head-on collision with an identical car moving toward you at the same
speed?
A) car
B) wall
C) both the same
D) need more information
Which of the following can be projected onto a viewing screen?
A) a real image
B) a virtual image
C) both of these
D) neither of these
If a cup of tea at room temperature, 24oC is heated until it has twice the internal energy,
unlike a piece of metal, its temperature will be
A) 48oC.
B) 100oC.
C) 321oC.
D) 594oC.
E) none of the above
Consider massive gliders that slide friction-free along a horizontal air track. Glider A
has a mass of 1 kg, a speed of 1 m/s, and collides with Glider B that has a mass of 5 kg
and is at rest. If they stick upon collision, their speed after collision will be
A) 1/4 m/s.
B) 1/5 m/s.
C) 1/6 m/s.
D) 1 m/s.
E) none of the above
Charge carriers in a metal are electrons rather than protons because electrons are
A) negative.
B) smaller.
C) loosely bound.
D) none of the above
A positively-charged rod is held near an aluminum can that rests on a dry wood table. If
you momentarily touch the opposite side of the can with your finger, the can becomes
A) positively charged.
B) negatively charged.
C) partially discharged.
D) completely discharged.
E) none of the above
The clock on the Big Ben Tower in London reads 12 noon. If you travel away from the
clock at a very high speed and view it with a telescope, you would see
A) run slower than a clock in your vehicle.
B) run faster than a clock in your vehicle.
C) be frozen at 12 noon.
Wood is a poor conductor
A) when it is cold.
B) at common room temperature.
C) when it is hot.
D) all of the above
E) none of the above
If a monkey floating in outer space throws his hat away, the hat and the monkey will
both
A) move away from each other, but at different speeds.
B) move away from each other at the same speed.
C) move a short distance and then slow down.
D) move a short distance and then go faster.
E) come to a stop after a few minutes.
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
A melon is projected into the air with 100 J of kinetic energy in the presence of air
resistance. When it returns to its initial level its kinetic energy is
A) less than 100 J.
B) more than 100 J.
C) 100 J.
D) need more information
Jogging Jake runs at 4 m/s along a train flatcar that moves at 10 m/s in the same
direction. Jake’s speed relative to the ground is
A) 6 m/s.
B) 10 m/s.
C) 14 m/s.
D) none of the above
A 10-kilogram block is pushed across a horizontal surface with a horizontal force of 20
N against a friction force of 10 N. The acceleration of the block is
A) 1 m/s2.
B) 2 m/s2.
C) 5 m/s2.
D) 10 m/s2.
E) none of the above
The famous Leaning Tower of Pisa doesn’t topple over because its center of gravity is
A) relatively low for such a tall building.
B) stabilized by its structure.
C) displaced from its center.
D) above a place of support.
E) in the same place as its center of mass.
A horizontal wooden beam sags a bit when supported at its ends. In between the top and
bottom surfaces is a region of
A) tension.
B) compression.
C) neither of these
Sounds from musical instruments are produced by
A) vibrating strings.
B) vibrating air columns.
C) percussion.
D) all of the above
E) none of the above
When liquids change to a solids, they
A) absorb energy.
B) release energy.
C) both of these
D) neither of these
The power expended doing 100 J of work in 50 s is
A) 1/2 W.
B) 2 W.
C) 4 W.
D) 50 W.
E) 5,000 W.
The equilibrium rule, ΣF = 0, applies to
A) objects or systems at rest.
B) objects or systems in uniform motion in a straight line.
C) both of these
D) neither of these
When an ideal gas is subjected to an adiabatic process
A) no work is done on the gas.
B) the temperature of the gas does not change.
C) the internal energy of the gas does not change.
D) all of the above
E) none of the above
Rainbows exist because light is
A) reflected.
B) refracted.
C) both of these
D) neither of these
Newton’s rings illustrate
A) refraction.
B) reflection.
C) dispersion.
D) polarization.
E) interference.
The electric field around an isolated electron has a certain strength 1 cm from the
electron. The electric field strength 2 cm from the electron is
A) half as much.
B) the same.
C) twice as much.
D) four times as much.
E) none of the above