A displacement sensor records the motion of one point on a metal rod as a wave passes. The readings are shown in the table.
| Time / s | Displacement / mm |
|---|---|
| 0.00 | 0.0 |
| 0.10 | +2.0 |
| 0.20 | 0.0 |
| 0.30 | -2.0 |
| 0.40 | 0.0 |
| 0.50 | +2.0 |
| 0.60 | 0.0 |
The displacement varies from +2.0 mm to -2.0 mm, a total range of 4.0 mm. Which pair gives the period and amplitude of the wave at the sensor?
0.60 s0.60\ \mathrm{s}0.60 s and 2.0 mm2.0\ \mathrm{mm}2.0 mm
0.40 s0.40\ \mathrm{s}0.40 s and 4.0 mm4.0\ \mathrm{mm}4.0 mm
0.20 s0.20\ \mathrm{s}0.20 s and 2.0 mm2.0\ \mathrm{mm}2.0 mm
0.40 s0.40\ \mathrm{s}0.40 s and 2.0 mm2.0\ \mathrm{mm}2.0 mm
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.