Flashcards
Work, Energy and Power
Cards in this deck (9)
- 1Law of conservation of energyEnergy can neither be created or destroyed, but can change form. The total energy in any closed system is constant.
- 2Work DoneWork done by a force : The product of a force and displacement in the direction of the force.
Work done by an expanding gas : Work done= pressure.change in volume. - 3Deriving kinetic energy
- 4G.P.E and E.PGravitational potential energy : energy possessed by an object due to its position.
Elastic potential energy : possessed by an object due to its state of deformation.
Electric potential energy : associated with the interaction between bodies due to their electric charge. - 5Deriving Gravitational Potential Energy
- 6PowerPower : work done per unit of time.
Power= work done / time taken - 7Deriving power
- 8EfficiencyRatio of (useful) output of energy of a machine to the input energy
efficiency=(Useful energy output/Total energy input) * 100 - 9Sources:Znotes.org and OALevelnotes.com
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- summary of work, energy and power
- Created by
- Hochel Brown · Aug 2016
- Updated
- Aug 17, 2016
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