Formulae

kensa waddington
Flashcards by kensa waddington, updated more than 1 year ago
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GCSE physics 1 Flashcards on Formulae, created by kensa waddington on 05/15/2014.

Resource summary

Question Answer
Wave speed. You calculate the wave speed by Frequency multiplied by the wavelength. or. Distance divided by time.
Electrical power. Current multiplied by potential difference gives you the electrical power.
Cost of electricity. Power multiplied by time(hour) multiplied by cost of 1 kilowatt-hour.
Power. To get the power you need to do energy used divided by time taken.
Efficiency. To get the efficiency you need to do. Useful energy transferred by the device divided by total energy supplied to the device then you multiply the answer by 100.
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