A researcher investigates sound waves travelling through carbon dioxide in a long tube.
The table shows measurements for the sound wave.
| measurement | result |
|---|---|
| complete oscillations recorded by a pressure sensor | 20 |
| recording time | 0.050 s |
| positions of four successive compression centres | 15 cm, 80 cm, 145 cm, 210 cm |
What is the speed of the sound wave?
2.6×102 m/s2.6\times10^2\ \mathrm{m/s}2.6×102 m/s
1.6×10−3 m/s1.6\times10^{-3}\ \mathrm{m/s}1.6×10−3 m/s
2.6×104 m/s2.6\times10^4\ \mathrm{m/s}2.6×104 m/s
6.2×102 m/s6.2\times10^2\ \mathrm{m/s}6.2×102 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.