Formulae Flashcards

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1
Q

Average speed

A

Average speed=distance/time

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2
Q

Acceleration

A

Acceleration=change in velocity/time taken

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3
Q

Force

A

Force=mass x acceleration

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4
Q

Weight

A

Weight = mass x Grav field strength

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5
Q

Electrical power

A

Power= current x voltage

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6
Q

Charge

A

Charge =current x time

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7
Q

Voltage

A

Voltage = current x resistance

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8
Q

Gravitational potential energy

A

GPE = m x g x h

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9
Q

Kinetic energy

A

1/2 x m x v^2

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10
Q

Density

A

Mass / volume

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11
Q

Pressure

A

Force/area

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12
Q

Pressure difference

A

Height x density x g

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13
Q

Wave speed

A

Frequency X wavelength

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14
Q

Frequency

A

1/time

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15
Q

Angle of incidence

A

Angle of reflection

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16
Q

Refractive index

A

Speed of light in a vacuum/speed of light in that material

17
Q

Snell’s law

A

N = sin I/sin r

18
Q

Critical angle

A

Sin C= 1/n

19
Q

Efficiency

A

Useful energy output/total energy input

20
Q

Work done

A

Force X distance moved

21
Q

Power

A

Work done/time taken

22
Q

Kinetic energy gained

A

Gravitational potential energy lost

23
Q

Fixed mass of a gas at a constant temperature

A

Pressure X volume = constant

24
Q

Fixed mass of a gas at a constant temperature

A

P1v1=p2v2