A ship sends a pulse of sound down to the seabed.
The echo is detected by the ship 0.80 s after the pulse is sent.
The speed of sound in sea water is 1500 m/s.
Use the equation: distance travelled=speed×time\text{distance travelled} = \text{speed} \times \text{time}distance travelled=speed×time
How deep is the sea below the ship?
600 m600\ \text{m}600 m
1200 m1200\ \text{m}1200 m
1875 m1875\ \text{m}1875 m
2400 m2400\ \text{m}2400 m
52 exam-style questions on OCR GCSE Physics 5.1 Wave behaviour, covering 5.1.1 Describing wave motion, 5.1.2 Wavelength and frequency, 5.1.3 Wave speed, frequency and wavelength, 5.1.4 Wave speed problems, 5.1.5 Transverse and longitudinal waves, 5.1.6 Sound waves crossing between media, 5.1.7 Reflection, transmission and absorption at interfaces, 5.1.8 Sound waves and vibrations in solids, 5.1.9 Frequency range and human hearing, 5.1.10 Modelling waves with water ripples and sound, and 5.1.11 Evidence that the wave travels, not the medium. Each one has a worked solution and a mark scheme showing where the marks go.