Daily Practice

GCSE Science

22nd December 1991

5 questions · GCSE · 584 questions in this band

1
Physics Equations: Recall, Rearrangement and Application
Write the equation linking power, energy and time, and rearrange it for time.
2
Physics Required Practicals and Uncertainties
Define the resolution of a measuring instrument.
3
Energy
A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
4
Energy Stores, Transfers and Calculations
A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
5
Efficiency, Power and Energy Resources
Give the equation for efficiency in terms of energy.

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