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Sound waves can interfere with one another so that no sound results.
A) True
B) False
C) Either, depending on the air temperature.
A weightless spring is stretched 10 cm by a suspended 1-kg block. If two such springs
are used to suspend the block, one spring above the other, to effectively provide one
double-length spring, then the total stretch of the double-length spring will be
A) 5 cm.
B) 10 cm.
C) 20 cm.
D) 30 cm.
E) none of the above
Atoms can be excited by
A) thermal agitation.
B) electron impact.
C) photon impact.
D) all of the above
E) none of the above
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
The drift speed of electrons that compose current in a flashlight is about
A) the speed of sound waves in metal.
B) the speed of light.
C) 1000 cm/s.
D) less than 1 cm/s.
E) any of the above under different conditions.
Two vehicles with equal magnitudes of momentum traveling at right angles to each
other undergo an inelastic collision. The combined wreck moves in a direction
A) parallel to either of the cars before collision.
B) at 45 degrees to the direction of either car before collision.
C) at some angle other than 45 degrees.
Holograms employ the principle of
A) diffraction.
B) interference.
C) both of these
D) neither of these
Magnet A has twice the magnetic field strength of Magnet B and at a certain distance
pulls on magnet B with a force of 100 N. The amount of force that magnet A exerts on
magnet B is
A) at or about 50 N.
B) exactly 100 N.
C) need more information
A softer landing occurs when an falling object bounces from a surface
A) in a extended time.
B) quickly.
C) either of these
D) neither of these
An image of the American flag cast by a simple lens finds red and blue colors at slightly
different distances from the lens. The color closest to the lens is
A) red.
B) blue.
C) both at the same place
Huygens' principle applies mainly to
A) refraction of waves in a medium.
B) reflection of waves.
C) both of these
D) neither of these
A spinning tossed baseball veers off course in the direction of
A) crowded streamlines.
B) non-crowded streamlines.
C) onward-coming streamlines.
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
A) increases.
B) decreases.
C) doesn't change.
D) need more information
When a nucleus emits a positron, its atomic number
A) increases by 1.
B) decreases by 1.
C) doesn't change.
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) one eighth.
B) one quarter.
C) one half.
D) the same.
E) double.
The origin of any microtides in the human body is most likely the
A) Sun.
B) Moon.
C) Earth.
A ball thrown straight upward takes 10 seconds for its up-and-down round trip. Because
of air resistance, the time taken for the ball just to go up is
A) less than 5 s.
B) 5 s.
C) more than 5 s.
The brightest color in sunlight is
A) red.
B) yellow.
C) yellow-green.
D) green.
E) violet.
When you observe the applications of pistons in lifting operations you're seeing
A) Pascal's principle in action.
B) how energy can be increased.
C) both of these
D) neither of these
The vibrations of a longitudinal wave move
A) along the direction of wave travel.
B) at right angles to the direction of wave travel.
C) that changes with speed.
A fishing-boat captain returns to port saying, "It's rough out there with waves that are 4
meters high." He is probably talking of waves of amplitude
A) 1 m.
B) 2 m.
C) 3 m.
D) 4 m.
The function of polarizing filters in viewing 3-D slides or movies is to provide each eye
A) the ability to see parallax.
B) a balanced intensity.
C) an independent left or right-eye view.
D) a stereoscopic view.
E) with light polarized at right angles to each other.
Compared to the mass of an apple on Earth, the mass of the apple on the Moon is
A) one sixth as much.
B) the same.
C) six times as much.
D) zero.
You wish to drill a hole through a horizontal I-beam supporting a bridge. To weaken the
beam the least drill the hole through the
A) upper flange.
B) lower flange.
C) web.
D) all the same
Fusing two iron nuclei would occur with
A) absorption of energy.
B) release of energy.
C) neither of these
A sonic boom is produced by an airplane flying at a speed
A) just below the speed of sound.
B) equal to the speed of sound.
C) greater than the speed of sound.
D) all of the above
E) none of the above
The shortest distance between two points in flat Euclidean space is a
A) straight line.
B) geodesic.
C) neither of these
A river 100 m wide flows due south at 1 m/s. A boat that travels 1 m/s relative to the
water is pointed due east as it crosses from the west bank. The boat reaches the east
bank
A) due east of its starting point.
B) 100 m farther south.
C) 141 m farther south.
D) none of the above
The Gateway Arch in St. Louis, Missouri, is a
A) parabola.
B) hyberbola.
C) catenary.
Distant dark mountains appear bluish because
A) they are far away.
B) yellow is being scattered.
C) you're looking at low-level blue sky between you and the mountain.
D) of nature's wonderful preferences.
