Daily Practice

GCSE Science

30th May 1993

5 questions · GCSE · 584 questions in this band

1
Physics Required Practicals and Uncertainties
How is the uncertainty in a set of repeated readings usually estimated?
2
Energy
A 5.0 kg object is lifted 3.0 m. Calculate its gain in gravitational potential energy (g = 9.8 N/kg).
3
Energy Stores, Transfers and Calculations
What happens to the energy described as 'wasted' in a transfer?
4
Efficiency, Power and Energy Resources
Define power and give its unit.
5
Electricity
A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.

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