P2. Work, Energy and Power

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work done (J)
force (N) x distance (m)
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kinetic energy
energy stored in moving objects, for example a ball that has been kicked
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chemical energy
stored in bonds of chemical compounds and released in chemical reactions
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elastic energy
stored when we stretch, bend or compress something elastic
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nuclear energy
stored in every atom and released during nuclear fusion
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internal energy
heat or thermal energy, stored in a system
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grav potential energy
stored in any object that is lifted upwards
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mechanical work
forces making things move
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electrical work
electric currents
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waves
light and sound
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heat
such as from gas cooker
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dissipated
energy is wasted by transferring to the surrounding through thermal energy
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kinetic energy equation
K.E = 1/2 x mass (kg) x velocity (m/s)^2

1/2mv^2
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grav potential energy equation
mass (kg) x acceleration of gravity (m/s)^2 x change in height (m)

mx10xh
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power
the rate at which energy is transferred, measured in watts.

= energy transferred (J) / time taken (s)
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Renewable energy
hydroelectric, tidal, wave, solar, wind, geothermal
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Non-renewable energy
fossil fuels, nuclear
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Other cards in this set

Card 2

Front

energy stored in moving objects, for example a ball that has been kicked

Back

kinetic energy

Card 3

Front

stored in bonds of chemical compounds and released in chemical reactions

Back

Preview of the back of card 3

Card 4

Front

stored when we stretch, bend or compress something elastic

Back

Preview of the back of card 4

Card 5

Front

stored in every atom and released during nuclear fusion

Back

Preview of the back of card 5
View more cards

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