A warning system sends a steady sound wave along a road tunnel.
A data logger records the times at which successive compression centres pass a fixed detector.
| compression centre | time / ms\mathrm{ms}ms |
|---|---|
| A | 0.20 |
| B | 1.00 |
| C | 1.80 |
| D | 2.60 |
At one instant, an array of sensors records the positions of five successive compression centres.
| compression centre | position / m\mathrm{m}m |
|---|---|
| P | 0.120 |
| Q | 0.392 |
| R | 0.664 |
| S | 0.936 |
| T | 1.208 |
A second detector is 102 m farther along the tunnel than the fixed detector.
Calculate the time taken for the sound wave to travel between the two detectors.
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.