A transducer sends a sound wave through an aluminium plate. The sound wave then enters a layer of epoxy resin at an angle to the normal.
The wavelength of the sound wave in the aluminium is 2.52 mm.
| Medium | Speed of sound in m/s\text{m/s}m/s |
|---|---|
| aluminium | 6300 |
| epoxy resin | 2500 |
Calculate the frequency of the sound wave in the aluminium.
Calculate the wavelength of the sound wave in the epoxy resin.
Explain how the direction of the sound wave changes as it enters the epoxy resin.
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.