PH-2242
Echoes and ultrasound
Physics · Secondary 4 · Medium · Echoes and ultrasound
A sonar device on a ship emits an ultrasound pulse which travels to the seabed and the echo returns after 0.80 s. The speed of ultrasound in seawater is . What is the depth of the seabed?
- 600 m
- 300 m
- 750 m
- 1200 m
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