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14 Cards in this Set
- Front
- Back
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What does energy lost in the g.p.e store equal? |
Gain in the kinetic energy store |
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Equation for kinetic energy |
1/2 × mass × velocity (squared) |
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G.P.E equation |
mass × gravitational field strength × height |
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Elastic equation |
1/2 × spring constant × extension (squared) |
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What is specific heat capacity? |
The amount of energy needed to raise the temp of 1kg of something by 1 |
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Heat capacity equation |
mass × specific heat capacity × temp change |
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What is power |
The rate of energy transfer |
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What is power measured in? |
Watts |
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Power equation (energy transferred) |
Energy transferrer ÷ time |
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Power equation (work done) |
Work done ÷ time |
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What is conduction? |
The process where vibrating particles pass energy to others |
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What is convection? |
Where energy particles move away from hotter to cooler regions |
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Efficiency equation (useful energy transfer) |
Useful output energy ÷ total input energy |
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Efficiency equation (power) |
Useful power output ÷ total power output |
