Describe an experiment to determine the speed of sound in air.
State the apparatus required, the measurements taken, and how to calculate the speed of sound from these measurements.
You may draw a labelled diagram as part of your answer.
A Wi-Fi router is used to transmit data to a laptop computer.
State the name of the region of the electromagnetic spectrum used by Wi-Fi.
State the speed of electromagnetic waves in air.
The frequency of the Wi-Fi signal is 5.00 GHz5.00\text{ GHz}5.00 GHz.
Calculate the wavelength of the waves used.
295 exam-style questions on CIE IGCSE Physics Sound, covering Sound. Each one has a worked solution and a mark scheme showing where the marks go.