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A hunter on level ground fires a bullet at an angle of 10 degrees above the horizontal
while simultaneously dropping another bullet from the level of the rifle. Which bullet
will hit the ground first?
A) the one dropped
B) the one fired
C) both hit at the same time.
A column that extends from sea level to the top of the atmosphere contains a certain
mass of air. If the column instead contained the same mass of water, its height would be
about
A) 3/4 meter.
B) 10.3 meters.
C) 5.6 kilometers.
D) none of the above
Some alpha particles fired at a gold foil bounced backward as a result of
A) reflection from the surfaces of gold atoms.
B) electrostatic repulsion by gold nuclei.
C) electrostatic repulsion by electrons within gold atoms.
D) all of the above
E) none of the above
When carbon and oxygen atoms combine, energy is
A) absorbed by the reaction.
B) released by the reaction.
C) not involved.
A solitary boy cannot balance on a seesaw with its fulcrum at its midpoint. If the
fulcrum is moved to one-quarter the distance from the boy, balance is achieved when
the weight of the boy is
A) less than the weight of the seesaw.
B) equal to the weight of the seesaw.
C) more than the weight of the seesaw.
D) need more information
Sound waves can interfere with one another so that no sound results.
A) True
B) False
C) Either, depending on the air temperature.
A given amount of heat energy can be completely converted to mechanical energy in
A) a steam engine.
B) an atomic reactor.
C) a simple machine.
D) all of the above
E) none of the above
The solar radiation curve is
A) a dent in the spherical Sun.
B) the path of the Sun as it circles Earth.
C) a plot of Sun's brightness versus frequency of emission.
D) a plot of sunlight colors versus their frequencies.
E) a plot of light intensity versus temperature of the Sun.
The focal point of a satellite in orbit about the Sun is
A) inside the Sun.
B) outside the Sun.
C) both of these
D) neither of these
A pair of sunglasses and a pair of clear reading glasses are left in the sunlight. The
hotter glasses will be the
A) sunglasses.
B) reading glasses.
C) both of these
D) neither of these
An aircraft that flies faster than the speed of sound is said to be
A) subsonic.
B) supersonic.
C) impossible.
D) none of the above
The buoyant force on an object is least when the object is
A) partly submerged.
B) submerged near the surface.
C) submerged near the bottom.
D) none of the above
To connect a pair of resistors so their equivalent resistance (the single resistor having
their combined value) will be least, connect them in
A) series.
B) parallel.
C) either of these
When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a
kinetic energy
A) less than 40 J.
B) more than 40 J.
C) of 40 J.
If you stand on a weighing scale and suddenly the atmosphere vanishes, taking
buoyancy into account, the scale reading
A) increases.
B) decreases.
C) remains the same.
D) quickly reduces to zero.
The fact that light travels only at 300,000 km/s in free space is a consequence of
A) electromagnetic wave propagation.
B) electromagnetic field induction.
C) Maxwell's laws.
D) energy conservation.
E) none of the above
If two copper wires of the same length have different thickness, then the thicker wire
has
A) more resistance.
B) less resistance.
C) both the same
Superconductors most often require
A) low operating temperatures.
B) high operating temperatures.
C) magnets.
The mass of matter is due mostly to its
A) protons.
B) electrons.
C) both of these
Fourier analysis makes central use of
A) wave superposition.
B) partial tones.
C) harmonics.
D) none of the above
Hang time is the time your feet are off the ground in a jump. If you jump upward inside
a moving vehicle, your hang time will be
A) slightly more.
B) the same.
C) slightly less.
If sunlight were green instead of white, the most comfortable color to wear on a hot day
would be
A) magenta.
B) yellow.
C) green.
D) blue.
E) violet.
Your vision is sharpest when your pupil is
A) dilated.
B) constricted.
C) same either way
Ideally, a ball is thrown up at an angle and lands downrange. Because of air resistance,
the distance reached is
A) less.
B) the same.
C) greater.
D) need more information
To kick a football so it won't topple end over end, kick it so the force of impact extends
A) above its center of gravity.
B) through its center of gravity.
C) below its center of gravity.
Two equal-size vectors at right angles to each other have a resultant that is
A) equal to that of either vector.
B) √2 the length of either vector.
C) twice the length of either vector.
In which material does light travel fastest?
A) glass
B) water
C) plastic
D) air
E) same for all
When water freezes, the surrounding air is
A) cooled.
B) warmed.
C) both of these
D) neither of these
Compared to the primary voltage, the secondary voltage can be
A) higher.
B) lower.
C) the same.
D) any of the above
E) none of the above
According to Kepler, the line from the Sun to any planet sweeps out equal areas of
space
A) with each complete revolution.
B) only when the paths are ellipses.
C) in equal time intervals.
The possible fate of a neutron in ordinary uranium metal is to
A) cause fission of U-235 if present.
B) escape the metal.
C) be absorbed by U-238 without causing fission.
D) all of the above
E) none of the above
If oxygen were used as nuclear fuel, it would be best
A) fused.
B) fissioned.
C) either of these
