P1

?
Energy Stores -
Chemical , Kinetic , GPE , EPE , Thermal
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Closed System -
Energy constantly transfers in a loop forever with the same outcome
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Conservation of Energy -
Energy cannot be created nor destroyed
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In what form are energy transfer Diagrams displayed in -
Energy transfer diagrams are often displayed as flowcharts
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Work done (W) =
(Force Applied (F) or Weight) * Distance (s)
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Factors limiting Work Done -
Friction and wasted thermal energy
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GPE =
Mass * Height * Gravitational field strength
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Kinetic Energy (Ek) =
1/2 * Mass (m) * Velocity² (v²)
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Elastic Potential Energy (Ee) =
1/2 * Spring Constant (k) * Extension² (e²)
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Useful Energy -
Energy that is transferred to where it is needed in the form needed
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Wasted Energy -
Energy that is not usefully transferred
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Friction Causing Wasted Energy -
Friction is the main cause of wasted energy as it produces large amounts of useless thermal energy
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Efficiency =
Useful Output / Total Output
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Ways Energy is Wasted -
Friction between moving parts ; Resistance in a wire ; Air resistance opposing motion ; Sound made by moving parts
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Limiting Energy Wasted -
Lubricate moving parts ; Wires with less resistance ; Streamlined shapes ; Cut out noise
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The more Powerful an appliance...
...The faster the rate at which it transfers energy
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Power (P) =
Energy Transferred (E) / Time (t)
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Other cards in this set

Card 2

Front

Energy constantly transfers in a loop forever with the same outcome

Back

Closed System -

Card 3

Front

Energy cannot be created nor destroyed

Back

Preview of the back of card 3

Card 4

Front

Energy transfer diagrams are often displayed as flowcharts

Back

Preview of the back of card 4

Card 5

Front

(Force Applied (F) or Weight) * Distance (s)

Back

Preview of the back of card 5
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