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6. Efficiency=

  • mass x gravitational field strength
  • Useful output energy / total input energy
  • spring constant x extension
  • mass x volume

7. Distance travelled=

  • mass x acceleration
  • mass x gravitational field strength
  • speed x time
  • power x time

8. Charge flow=

  • distance / time
  • current x time
  • useful output energy / total input energy
  • mass x gravitational field strength x hight

9. Force applied to a spring=

  • mass / volume
  • mass x gravitational field strength x height
  • spring constant x extension
  • distance / time

10. Potential difference=

  • mass x gravitational field strength
  • mass x velocity
  • current x resistance
  • distance / time

11. Wave speed=

  • force x distance
  • spring constant x extension
  • frequency x wavelength
  • distance / time

12. Energy transferred=

  • distance x time
  • current x resistance
  • Charge flow x potential difference
  • mass x gravitational field strength x height

13. Energy transferred=

  • distance x time
  • power x time
  • current x time
  • distance / speed

14. Work done=

  • mass / volume
  • power x time
  • force x distance
  • mass x gravitational field strength x height

15. Resultant force=

  • change in velocity / time taken
  • mass x acceleration
  • mass / volume
  • spring constant x extension

16. Density=

  • change in velocity / time taken
  • power x time
  • mass / volume
  • potential difference x current