Calculations 3

1. a) What is the time period of a wave with frequency 50Hz?

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b) What is the frequency of a wave with time period 0.2 seconds?

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2. a) How fast does a wave with frequency 20 Hz and wavelength 0.5 metres travel?

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b) What is the wavelength of a wave with frequency 90 Hz and speed 45 m/s?

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3. a) How much work is done if a rock is pushed three metres with force 40 N?

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b) How far could you push this rock with 360 J of energy?

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4. a) A 2 kg mass was thrown 2.4 m into the air.
What was the GPE of the mass at its peak?
Take gravity to be 98 N/kg, and give your answer to 2.s.f.

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b) When another mass was thrown into the air, it peaked at 2 m with 100 J of GPE. To 2.s.f., what was its mass?

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5. a) A 1950 kg car is traveling at 42 m/s.

Give the full kinetic energy in joules.

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b) ...and again in megajoules, to 2.s.f.

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6. A fan transfers 3.2 kJ of energy every 50 seconds.
What is the power output of the fan?

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Well Done!

If you've just done all three of these lucky dip calculation tests, you can consider yourself a great reviser of Physics.

Don't worry too much about your up and coming exam - practice makes perfect!

If you don't consistently get scores above 95% on these tests, learn from your mistakes and try again!

Buster Tests - GCSE Revision Tests