An acoustic sensor sends a sound pulse through a glass panel and into a polymer coating.
| material | wave speed in m/s\mathrm{m/s}m/s |
|---|---|
| glass | 5.10 × 103 |
| polymer | 1.20 × 103 |
The wavelength of the sound pulse in the glass is 0.0120 m.
Calculate the wavelength of the sound pulse in the polymer coating.
112 exam-style questions on Edexcel GCSE Physics 4.3 Sound, ultrasound and infrasound, covering 4.3.1 Sound waves, vibrations and the human ear, 4.3.2 Ultrasound and infrasound, 4.3.3 Uses of ultrasound and infrasound, and 4.3.4 Sound waves passing between media. Each one has a worked solution and a mark scheme showing where the marks go.