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Physics Revision > Equations > Flashcards

Equations Flashcards

1
Q

Average Speed

A

Distance moved/time taken

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2
Q

Acceleration

A

Change in velocity/time taken

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3
Q

Final speed ^2

A

Initial speed ^2 + 2accelerationdistance moved

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4
Q

Force

A

Mass*acceleration

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5
Q

Weight

A

Mass*gravitational field strength

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6
Q

Power

A

Current*voltage

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7
Q

Energy transferred

A

Currentvoltagetime

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8
Q

Voltage

A

Current*resistance

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9
Q

Charge

A

Current*time

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10
Q

Energy transferred

A

Charge*voltage

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11
Q

Wave speed

A

Frequency*wavelength

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12
Q

Frequency

A

1/time period

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13
Q

Refractive index

A

Sin of angle of incidence/ Sin of angle of refraction

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14
Q

Sin of critical angle

A

1/ refractive index

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15
Q

Efficiency

A

(Useful energy output/ total energy output) *100

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16
Q

Work done

A

Force*distance moved

17
Q

Gravitational potential energy

A

Massgravitational field strengthheight

18
Q

Kinetic energy

A

0.5massspeed^2

19
Q

Power

A

Work done/ time

20
Q

Density

A

Mass/volume

21
Q

Pressure

A

Force/area

22
Q

Pressure difference

A

Heightdensitygravitational field strength

23
Q

Pressure - temperature

A

Constant P1/T1 = P2/T2

24
Q

Orbital speed

A

(2πorbital radius)/time period

25
Q

Momentum

A

Mass*velocity

26
Q

Force

A

Change in momentum/time taken

27
Q

Moment

A

Force*perpendicular distance from pivot

28
Q

Change in thermal energy

A

Massspecific heat capacitychange in temperature

29
Q

Relationship between input and output voltages for a transformers

A

Input (primary) voltage/ output (secondary) voltage = primary turns/secondary turns

30
Q

Input power

A

Output power VpIp=VsIs

31
Q

Change in wavelength/reference wavelength

A

Velocity of a galaxy/speed of light

32
Q

Work done

A

Energy transferred

Physics Revision (2 decks)

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