A sound wave, traveling at 348m/s, is emitted
by the foghorn of a tugboat. An echo is heard
1.99 s later.
How far away is the reflecting object?
Answer in units of m
Call it 2 seconds for the round trip
the reflector is half the round trip away, so the sound takes 1 second to get there, and one second to get back (assuming the tugboat is going slowly relative to the speed of sound)
so, how far does the sound go in 1 second?
A sound wave, traveling at 337m/s, is emitted
by the foghorn of a tugboat. An echo is heard
1.4 s later.
How far away is the reflecting object?
471.8 m
To find the distance of the reflecting object, we can use the formula:
distance = (speed of sound x time) / 2
Given:
speed of sound = 348 m/s
time = 1.99 s
Plugging in these values into the formula:
distance = (348 m/s x 1.99 s) / 2
distance = 691.02 m / 2
distance = 345.51 m
Therefore, the reflecting object is approximately 345.51 meters away from the tugboat.