An engineer investigates the speed of a vibration pulse along a long metal beam. Two electronic pickups, A and B, are fixed 7.50 m apart. The same data logger records the time at which each pulse reaches the pickups.
| Test | Time at pickup A in ms\mathrm{ms}ms | Time at pickup B in ms\mathrm{ms}ms |
|---|---|---|
| 1 | 2.16 | 3.64 |
| 2 | 5.32 | 6.83 |
| 3 | 8.47 | 9.98 |
Calculate the mean speed of the pulse between pickup A and pickup B. Give your answer in m/s\mathrm{m/s}m/s.
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.