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Physics
OCR GCSE Physics A
Energy
OCR GCSE Physics A · J249 · Topic P7
Energy
Paper 2 (Foundation)
or
Paper 4 (Higher)
· 12 notes
P7.1
Work done
P7.1a
Conservation of energy
P7.1b
Energy store changes
P7.1c
Energy changes by heating and work
P7.1d
Energy calculations
P7.1e
Calculations for moving and stretched objects
P7.2
Power and efficiency
P7.2a
Energy dissipation
P7.2b
Energy waste in devices
P7.2c
Power ratings
P7.2d
Calculating efficiency
P7.2e
Increasing efficiency
P7.2f
Reducing unwanted transfer
P7.2g
Cooling of buildings
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