Physics · Wave motion, longitudinal and transverse waves, speed of the travelling wave, displacement relation for a progressive wave
A sonar device on a submarine send out a signal and receives an echo 5 seconds l
A sonar device on a submarine send out a signal and receives an echo 5 seconds later. Calculate the speed of sound in water, if the distance of the object from the submarine is \( 3625 \mathrm{m} \)
- A. \( 1440 \mathrm{ms}^{1} \)
- B. \( 1460 \mathrm{ms}^{1} \)
- C. \( 1450 m s^{1} \)
- D. \( 1470 \mathrm{ms}^{1} \)
Step-by-step solution
The signal travels to the object and back, so total distance = 2 × 3625 m = 7250 m. Time = 5 s. Speed = distance/time = 7250/5 = 1450 m/s.
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