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Flashcards in Equations Deck (16)
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1

How to calculate weight?

Mass x gravitational field strength

2

How to calculate work done?

force x distance

3

How to calculate force applied to a spring?

spring constant x extension

4

How to calculate pressure?

force normal to a surface / area of that surface

5

How to calculate speed?

distance / time

6

How to calculate acceleration?

change in velocity/ time taken

7

How to calculate resultant force?

Mass x acceleration

8

How to calculate power?

energy transferred / time

9

How to calulate efficiency?

useful output/ total power input

10

How to calculate wave speed?

frequency x wave length

11

How to calculate charge flow?

current x time

12

How to calculate potential difference?

current x resistance or power / curren

13

How to calculate density?

Mass/volume

14

How to calculate power usingcurret?

(current)2 x resistance

15

How to calculate energy transferred?

power x time or charge flow x potential difference

16

How to calculate kinetic energy?

0.5 x mass x (speed)2