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Physics
Physics
Problem
State the relation between distance
d
d
d
to an underwater reflector, the speed of sound
v
v
v
in water, and the measured round-trip time
t
t
t
of an ultrasonic pulse. a)
d
=
v
t
d = vt
d
=
v
t
b)
d
=
2
v
t
d = 2vt
d
=
2
v
t
c)
d
=
v
t
2
d = \dfrac{vt}{2}
d
=
2
v
t
d)
d
=
v
t
4
d = \dfrac{vt}{4}
d
=
4
v
t
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