Formulas Flashcards by Tricky …

Q

Wave speed

A

Frequency X wavelength

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Q

Gravitational field strength

A

force ÷ mass

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Q

Power

A

Work ÷ time

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Q

Speed

A

Distance ÷ time

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Q

Average speed

A

Total distance ÷ total time

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Q

Acceleration

A

Change in speed ÷ change in time

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Q

Refractive index

A

Sin(angle of incidence) ÷ sin(angle of refraction)

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Q

Density

A

Mass ÷ volume

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Q

Resistance

A

Voltage ÷ current

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Q

Power(electrical)

A

Voltage X current
OR
Current ² x resistance

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Q

Voltage(primary coil)

A

Turns(primary coil) ÷ turns(secondary coil)

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Q

Kinetic energy

A

1/2 X mass X velocity ²

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Q

Gravitational potential energy

A

Mass X gravitational field strength X height

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Q

Efficiency

A

Useful energy output ÷ total energy input

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Q

Work (change in energy)

A

Force X distance

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Q

Moment

A

Force X perpendicular distance from pivot

Q

Pressure

A

Force ÷ area

Q

Spring constant

A

Force ÷ extension

Q

Current

A

Charge ÷ time

OR

Voltage ÷ Resistance

Q

Energy

A

Current X voltage X time

Q

Force

A

Mass X acceleration