Physics equation and Units

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Work done
Force x Distance
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Efficiency
Useful energy output
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Gravitational potential energy
Mass x Gravitational field strength x Height
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Kinetic energy
1/2 x Mass x Velocity
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Weight
Mass x Gravitational field strength
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Power
Work done
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Force units
N (newtons)
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Energy units
J (joules)
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Power symbol
W (watts)
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Mass symbol
Kg (kilograms)
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Time
S (seconds)
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Work done
This is when a force moves an object a distance, it is when energy is transferred
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Power
The rate at which energy is transferred
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Power
1 watt=1 j/s
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Conservation of Energy
Energy cannot be created or destroyed, but dissipated into the surroundings
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Wasted energy
Wasted energy is usually in a form that is not useful and is eventually dissipated into the surroundings as heat
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Gravitational potential energy How is it gained?
this is gained by an object because of it height
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Kinetic Energy How is it gained?
This is beacause an object is moving
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Renewable energy source
A renewable energy source is one that is or can be replenished as it is being used
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Main Energy resources
Wind, Water (hydroelectric), Tides, Waves, Bio-fuel, Geothermal resources, Solar cells, Fossil fuels (coal, oil and natural gas), nuclear power
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Energy resources what is it for?
they are used to transport, heating
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Disadvantages How to deal with them
Science can find the disadvantages but does not have the power to deal with issues because political, social, ethical and economic concerns such as Democracy
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Other cards in this set

Card 2

Front

Efficiency

Back

Useful energy output

Card 3

Front

Gravitational potential energy

Back

Preview of the front of card 3

Card 4

Front

Kinetic energy

Back

Preview of the front of card 4

Card 5

Front

Weight

Back

Preview of the front of card 5
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