A marine research vessel uses low-frequency sonar to map the seabed. The sonar system transmits an acoustic wave with a frequency of 40 Hz.
The wave speed of this acoustic wave in seawater is 1.56 km/s.
Calculate the wavelength of the acoustic wave, in metres.
Use the equation:
wavelength=wave speedfrequency \text{wavelength} = \frac{\text{wave speed}}{\text{frequency}} wavelength=frequencywave speed64 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.