D: sound travels fastest in solids
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Below are four statements about the uses of electromagnetic radiation. Gamma rays are used in medical treatment. Infr…
A ripple tank is used to show wave behaviour. The dipper vibrates up and down at a constant frequency. What happens t…
A wave has a frequency of 10 kHz. Which pair of values of its speed and wavelength is possible?
A cell is connected in series with an ammeter and a lamp. The reading on the ammeter is 1 A. In which circuit, using …
The diagram represents part of a household circuit containing an electric kettle. Which row correctly identifies the …
A wire hangs between the poles of a magnet. When there is a current in the wire, in which direction does the wire move?