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Flashcards in Equation Deck (25)
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0

Speed

Total distance / time taken

1

Speed on distance time graph

Gradient

2

Acceleration

A = (v-u )/t

3

Weight

Mass x10

4

Density

Mass / volume

5

Extension

Force = spring constant x extension

6

Resultant force

Mass x acceleration

7

Moment

Force x perpendicular distance to pivot

8

Energy efficiently

Useful output energy / total input energy

9

Work done

Work = force x distance

10

GPE

Mass x gravity x height

11

KE

0.5 x mass x speed ^2

12

Power

Work done / time taken
Energy / time

13

Pressure

Force / area
Pressure x volume = constant

14

Pressure in liquid

Height x density x gravity

15

Thermal capacity

E / ( difference in temperature)

16

Specific heat capacity

E/ m x change in temperature

17

Specific latent heat

Energy / mass

18

Speed of wave

Wavelength x frequency

19

Refractive index

Sin I / sin r
Speed of light in air / speed of light in medium

20

Power ( electricity)

I ^2 x R

21

Voltage

IR ; căn PR ; P/I ; W/Q

22

Charge

Q = I x t

23

Energy ( electricity)

V x I x t

24

Critical angle

Sin -1 x (1/ refractive index)