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OCR Physics > Equations Youre Not Given > Flashcards

Equations Youre Not Given Flashcards

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1
Q

Density

A

Mass / volume

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2
Q

Distance travelled

A

Speed x time

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3
Q

Mass

A

Density x volume

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4
Q

Speed

A

Distance travelled / time

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5
Q

Acceleration

A

Change in velocity / time

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6
Q

Change in velocity

A

Time x acceleration

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7
Q

Time

A 
Distance travelled/ speed
Or
Change in velocity / acceleration
Or
Work done/power
Or
Charge flow/ current
Or
Energy transferred/power
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8
Q

Kinetic energy

A

0.5 x mass x velocity ^2

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9
Q

Force

A

Mass x acceleration

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10
Q

Velocity

A

Momentum/mass
Or
The square root of : 2x kinetic energy/ mass

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11
Q

Work done

A

Force x distance moved in direction of force

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12
Q

Power

A

Workdone / time

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13
Q

Workdone

A

Force x distance
Or
Power x time

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14
Q

Force exerted by spring

A

Spring constant x extension

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15
Q

Extension of spring

A

Force exerted by spring / spring constant

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16
Q

Gravity force

A

Mass x gravitational field strength

17
Q

(In a gravity field ) potential energy

A

Mass x height x gravitational field strength

18
Q

Pressure

A

Force normal to surface / area

19
Q

Moment of force

A

Force x distance

20
Q

Charge flow

A

Current x time

21
Q

Potential difference

A

Current x resistance

22
Q

Energy transferred

A

Charge x potential difference

23
Q

Power

A 
Potential difference x current
Or
Current ^2 x resistance
Or 
work done /time
24
Q

Energy transferred

A

Power x time

25
Q

Wave speed

A

Frequency x wavelength

26
Q

Efficiency

A

Useful output energy/ input energy

OCR Physics (2 decks)

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