PHYS 101 Final Exam (Liberty University,
Marshall)
Which of the following is not a transverse wave?
(a) sound
(b) light
(c) radio
(d) all of these
(e) none of these - ANS (a) sound
The frequency of a simple pendulum depends on
(a) its mass
(b) its length
(c) the angle it is released from
(d) all of these - ANS (b) its length
Wave interference occurs for
(a) sound waves
(b) light waves
(c) water waves
(d) all of these - ANS (d) all of these
The Doppler effect is characteristic of
(a) water waves
(b) sound waves
(c) light waves
(d) all of the above - ANS (d) all of the above
A fishing-boat captain returns to port saying, "It's rough out there the waves are 4 meters high."
He probably means that the amplitude of the waves is
(a) 4 m
(b) 3 m
(c) 2 m
(d) 1m - ANS (c) 2 m
The source of every sound is something that is
(a) vibrating
(b) moving
(c) accelerating
(d) a net emitter of energy - ANS (a) vibrating
, A sound wave is a
(a) longitudinal wave
(b) transverse wave
(c) shock wave
(d) none of the above - ANS (a) longitudinal wave
Compressions and rarefactions are characteristic of
(a) longitudinal waves
(b) transverse waves
(c) both
(d) none of the above - ANS (a) longitudinal waves
Sound travels faster in
(a) air
(b) water
(c) steel
(d) sound travels at the same speed for all - ANS (c) steel
Two trees fall in the forest at the same time and no sound is heard, this is an example of
(a) constructive interference
(b) destructive interference
(c) both of these
(d) none of the above - ANS (b) destructive interference
Electrons are made to flow in a wire when there is
(a) an imbalance of charges in the wire
(b) more potential energy at one end of the wire than the other
(c) a potential difference across its ends - ANS (c) a potential difference across its ends
An Ampere is a unit of electrical
(a) pressure
(b) current
(c) resistance
(d) all of these - ANS (b) current
Electrons move in an electrical circuit
(a) by being bumped by other electrons
(b) by colliding with molecules
(c) by interacting with an established electric field
(d) because the wires are so thin - ANS (c) by interacting with an established electric field
Heat a copper wire and its electric resistance
(a) decreases
(b) remains unchanged
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