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Physics A
Global challenges
OCR
J249
Global challenges
Physics on the move
9 Subtopics
1
Typical speeds
Revise
2
Estimating accelerations
Revise
3
Calculations and unit conversion
Revise
4
Reaction times
Revise
5
Stopping distance factors
Revise
6
Stopping distance variation
Revise
7
Large decelerations
Revise
8
Force estimation
Revise
9
Speed, acceleration and force estimation
Revise
Powering Earth
10 Subtopics
1
Energy sources
Revise
2
Patterns in energy use
Revise
3
National Grid
Revise
4
Transformers in National Grid
Revise
5
Grid efficiency
Revise
6
High voltage transmission
Revise
7
Domestic supply
Revise
8
AC vs DC
Revise
9
Mains wires
Revise
10
Electrical safety
Revise
Beyond Earth
9 Subtopics
1
Red-shift
Revise
2
Big-Bang evidence
Revise
3
Lifecycle of a star
Revise
4
Radiation emission
Revise
5
Solar system
Revise
6
Circular orbits and gravity
Revise
7
Stable orbits
Revise
8
Earth's temperature balance
Revise
9
Wave detection of hidden structures
Revise
