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Flashcards in Formulae Deck (24)
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1
Q

Average speed

A

Average speed=distance/time

2
Q

Acceleration

A

Acceleration=change in velocity/time taken

3
Q

Force

A

Force=mass x acceleration

4
Q

Weight

A

Weight = mass x Grav field strength

5
Q

Electrical power

A

Power= current x voltage

6
Q

Charge

A

Charge =current x time

7
Q

Voltage

A

Voltage = current x resistance

8
Q

Gravitational potential energy

A

GPE = m x g x h

9
Q

Kinetic energy

A

1/2 x m x v^2

10
Q

Density

A

Mass / volume

11
Q

Pressure

A

Force/area

12
Q

Pressure difference

A

Height x density x g

13
Q

Wave speed

A

Frequency X wavelength

14
Q

Frequency

A

1/time

15
Q

Angle of incidence

A

Angle of reflection

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