A student uses a high-speed camera to record a vibrating string. For each measurement, the student records the camera time reading at the start and at the end of 45 complete oscillations.
| Measurement | Start time / s\mathrm{s}s | End time / s\mathrm{s}s |
|---|---|---|
| 1 | 0.120 | 0.494 |
| 2 | 0.805 | 1.181 |
| 3 | 1.430 | 1.805 |
Calculate the frequency of the vibrating string.
112 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.