Equations Flashcards by tom tanner

Q

Weight

A

Mass X gravitational field strength

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Q

Force applied to a string

A

Spring constant X extension

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Q

Acceleration

A

Change in velocity
—————————
Time taken

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Q

Momentum

A

Mass X velocity

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Q

Gravitational potential energy

A

Mass X height X gravitational field strength

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Q

Power

1

A

Work done
—————
Time

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Q

Efficiency

A

Useful power output
——————————
Total power output

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Q

Charge flow

A

Current X time

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Q

Power

2

A

Potential difference X current

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Q

Energy transferred

A

Power X time

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Q

Density

A

Mass
————
Volume

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Q

Work done

A

Force X distance

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Q

Distance

A

Speed x time

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Q

Resultant force

A

Mass X acceleration

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Q

Kinetic energy

A

1/2 X mass X velocity2

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Q

Power

3

A

Energy transferred
—————————
Time

Q

Efficiency

2

A

Useful output energy transfer
——————————————
Total input energy transfer

Q

Wave speed

A

Wavelength X frequency

Q

Potential difference

A

Current X resistance

Q

Power

4

A

Current2 X resistance

Q

Energy transferred

2

A

Charge flow X potential difference