Equatations Flashcards by John Barrett

Q

Efficiency equation

A

Efficiency= Total output/total inputx100

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Q

Work done equation

A

W=FxD

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Q

GPE equation

A

GPE=MxGxH

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Q

Kinetic energy equation

A

KE=0.5xMxV^2

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Q

Power fomula

A

P=W/t

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Q

Spring constant

A

Force = Spring constant x extention

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Q

Acceleration

A

Acceleration = Change in speed/ time

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Q

Gravitational potential

A

=Mass x Gravitational field strength x hieght

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Q

Change in thermal energy

A

= Mass x specific heat capacity x temperature change

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Q

Power

A

= energy transfer

Time

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Q

Power 2 =

A

Energy transfer

Time

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Q

Charge

A

= current x time

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Q

Potential difference

A

= current x resistance

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Q

Power (electrical)

A

=current^2 x resistance

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Q

Energy =

A

= Power x time

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Q

Energy (electrical 2)

A

Charge x potential differnce

Q

Density

A

Mass/

Volume

Q

Energy (heat)

A

Mass x specific latent heat

Q

Weight

A

Mass x gpe

Q

Elastic potential energy

A

1/2 spring constant x extension^2

Q

Distance

A

Speed x time

Q

Acceleration 2

A

Change in velocity

Time

Q

Force (acceleration and mass)

A

Acceleration x mass

Q

Momentum

A

Mass x velocity

Q

Wave period

A

1

Frequency

Q

Wave velocity

A

Frequency x wave length