Physics Equations Flashcards by molly davies

Q

Weight

A

Mass x gravitational field strength

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Q

Work done

A

Force x distance

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Q

Force applied to string

A

Spring constant x extension

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Q

Moment of a force

A

Force x distance

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Q

Pressure

A

Force normal to a surface / area of surface

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Q

Distance

A

Speed x time

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Q

Acceleration

A

Change in velocity / time

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Q

Resultant force

A

Mass x acceleration

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Q

Momentum

A

Mass x velocity

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Q

Kinetic energy

A

0.5 x mass x velocity2

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Q

Gravitational potential energy

A

Mass x gravitational field strength x height

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Q

Power

A

Energy transferred / time

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Q

Power

A

Work done / time

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Q

Efficiency

A

Useful output energy transferred / total input energy transferred

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Q

Efficiency

A

Useful power output / useful power input

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Q

Wave speed

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A

Frequency x wavelength

Q

Charge flow

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A

Current x time

Q

Potential difference

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A

Current x resistance

Q

Power

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A

Potential difference x current

Q

Power

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A

Current2 x resistance

Q

Energy transferred

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A

Power x time

Q

Energy transferred

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A

Charge flow x potential difference

Q

Density

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A

Mass / volume