Helpful Equations
1. Kinetic Energy = 0.5 x Mass x Velocity^2
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Kinetic energy - J
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Mass - Kg
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Velocity - m/s
2. Elastic Potential Energy = 0.5 x Spring constant x Extension^2
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Elastic Potential Energy - J
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Spring Constant - N/m
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Extension - m
3. Gravitational Potential Energy = Mass x Gravity x Height
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Gravitational Potential Energy - J
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Mass - Kg
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Gravity - N/Kg
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Height - m
4. Change in Thermal Energy = Mass x Specific Heat Capacity x Change in Temperature
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Change in Thermal Energy - J
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Mass - Kg
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Specific Heat capacity - J/Kg C
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Change in Temperature - C
5. Power = Energy Transferred / Time
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Power - W
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Energy Transferred - J
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Time - S
6. Power = Work Done / Time
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Power - W
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Work Done - J
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Time - S
7. Efficiency = Useful Energy Out / Total Energy in
8. Efficiency = Useful Power out / Total Power in
9. Force = mass x acceleration
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Force - N
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Mass - Kg
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Acceleration - m/s
10. Electrical Power = Current x Potential Difference
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Electrical Power = C
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Current = A
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Potential Difference = V