A student watches water waves on a pond. A cork floats on the water.
The student counts 12 complete waves passing the cork in 30 s.
The distance between the crests of neighbouring waves is 1.5 m.
Calculate the frequency of the waves.
Use the equation: period=1frequency\text{period} = \dfrac{1}{\text{frequency}}period=frequency1
Calculate the period of the waves.
Use the equation: wave speed=frequency×wavelength\text{wave speed} = \text{frequency} \times \text{wavelength}wave speed=frequency×wavelength
Calculate the speed of the waves.
The cork moves up and down as the waves pass, but it does not move towards the edge of the pond.
Explain what this shows about waves.
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.