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Which of the following is a property of light waves and NOT of sound waves?
A) frequency
B) wavelength
C) amplitude
D) polarization
E) none of the above
There is a greater proportion of carbon-14 in
A) new bones.
B) old bones.
C) same in each
The twinkling of the stars is a result of atmospheric
A) reflection.
B) refraction.
C) scattering.
D) dispersion.
E) aberrations.
Ice tends to form first at the
A) surface of bodies of water.
B) bottom of bodies of water.
C) either depending on water depth.
When a gas is heated and becomes a plasma, its electric charge is usually
A) balanced.
B) negative.
C) positive.
D) non-existent.
E) none of these
Why electrons don't spiral into atomic nuclei is best explained by their
A) particle nature.
B) wave nature.
C) both of these
D) neither of these
The radial velocity of an Earth satellite is its velocity
A) parallel to the surface of Earth.
B) perpendicular to the surface of Earth.
C) attributed to satellites moving in any direction.
D) none of the above
An Earth satellite in an elliptical orbit travels fastest when it is
A) nearest Earth.
B) farthest from Earth.
C) everywhere along its orbit.
Atomic number refers to the number of
A) protons in the nucleus.
B) neutrons in the nucleus.
C) nucleons in the nucleus.
Three kids pull on a toy. Kim pulls with a force of 30 N north, Jim pulls with a force of
30 N south, and Tim pulls with a force of 15 N east. The acceleration of the toy is
A) 10 m/s2.
B) 15 m/s2.
C) 33 m/s2
D) need more information
A geyser such as Old Faithful in Yellowstone Park is similar to a
A) vacuum bottle.
B) canteen.
C) coffee percolator.
D) teakettle.
E) vat of molten lead.
The energy output of a typical nuclear reactor is via
A) heating water to form steam.
B) directing steam to a turbine.
C) spinning a turbine to generate electricity.
D) all of the above
E) none of the above
Two identical objects in outer space, one moving at 2 m/s, the other at 1 m/s, have a
head-on collision and stick together. Their combined speed after the collision is
A) 0.5 m/s.
B) 0.33 m/s.
C) 0.67 m/s.
D) 1.0 m/s.
E) none of the above
If you leave the refrigerator door open in a closed room, the room temperature will
A) increase.
B) decrease.
C) be unaffected.
The average braking force of a 1000-kg car moving at 10 m/s braking to a stop in 5 s is
A) 1000 N.
B) 2000 N.
C) 3000 N.
D) 4000 N.
E) 5000 N.
A 10-meter-long spear is thrown at relativistic speeds through a 10-meter-long pipe.
(Both these dimensions are measured when each is at rest.) When the spear passes
through the pipe
A) the spear appears to shrink so the pipe completely covers it.
B) the pipe appears to shrink so the spear extends from both ends.
C) both appear to shrink equally so the pipe barely covers the spear.
D) any of these, depending on the motion of the observer (moving with the spear, at rest
with the pipe, and so on).
E) none of the above
The addition of salt to water affects its
A) crystal composition.
B) freezing point.
C) viscosity.
D) liquidity.
E) none of the above
Red-hot and blue-hot stars appear white to the eye because
A) the eye has difficulty seeing color at night.
B) they are too dim to fire the cones.
C) they are too dim to fire the rods.
D) they are overwhelmed by the blackness of the nighttime sky.
E) eye receptivity peaks in the yellow-green part of the spectrum.
Consider a metal ring with a gap cut in it. When the ring is heated, the gap
A) becomes narrower.
B) becomes wider.
C) retains its size.
To say that one wave is out of phase with another is to say that the waves are
A) of different amplitudes.
B) of different frequencies.
C) of different wavelengths.
D) out of step.
E) all of the above
Two charges that are separated by one meter exert 1-N forces on each other. If the
charges are pushed together so the separation is 25 centimeters, the force on each
charge will be
A) 1 N.
B) 2 N.
C) 4 N.
D) 8 N.
E) 16 N.
The speed of an Earth satellite does NOT depend on its
A) distance from Earth.
B) mass.
C) but it depends on both
D) it depends on neither
When Millikan observed oil drops hovering at rest in his chamber, he knew that
A) an upward electric force balanced the weight of each drop.
B) each drop was in mechanical equilibrium.
C) the net force on each drop was zero.
D) all of the above
E) none of the above
If you double the net force on an object, you'll double its
A) acceleration.
B) speed.
C) velocity.
D) all the above
A player catches a ball. If action is the force of the ball against the player's glove,
reaction is the
A) player's grip on the glove.
B) glove against the ball.
C) friction of the ground against the player's shoes.
D) muscular effort in the player's arms.
E) none of the above
Gamma rays are emitted by way of
A) ionizing radiation.
B) transitions within an atom's innermost electrons.
C) transitions within the atomic nucleus.
D) none of the above
A floating ice cube contains small pieces of iron. The water level after melting will
A) rise.
B) fall.
C) remain unchanged.
Which of these strongly relate to a piano string?
A) mass
B) length
C) pitch
D) all of the above
E) none of the above
What is the weight of water displaced by a 100-ton floating ship?
A) less than 100 tons
B) 100 tons
C) more than 100 tons
D) 100 cubic meters
E) depends on the ship's shape
Looking forward, common consensus will likely agree that the wisest use of fossil fuels
is to
A) convert them to heat and smoke.
B) save them for tomorrow's materials.
C) extract and sell them as quickly as possible.
D) all of the above
What prevents satellites such as the ISS from falling?
A) gravity
B) centripetal force
C) centrifugal force
D) the absence of air drag
E) nothing
A certain light source blinks once per second in its own frame of reference. As you
recede from the blinking source, you observe the frequency of blinks to be
A) less than 1 Hz.
B) 1 Hz.
C) more than 1 Hz.
Light behaves primarily as a wave when it
A) travels from one place to another.
B) interacts with matter.
C) both of these
D) neither of these
A 4-ohm and 6-ohm resistor connected in parallel have an equivalent resistance of
A) 2.4 ohms.
B) 4 ohms.
C) 5 ohms.
D) 5.5 ohms.
E) 10 ohms.
