Flashcards in Required Physics Equations Deck (15)

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1

## Kinetic energy

###
E = ½ x m x v²

Energy = ½ x Mass x Velocity²

2

## Elastic potential energy

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E = ½ x k x e²

Energy = ½ x Spring constant x Extension²

3

## Gravitational potential energy

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E = m x g x h

Energy = Mass x Gravitational constant x Height

4

## change in thermal energy

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ΔE = m x c x Δθ

Change in energy = Mass x Specific heat capacity x Change in temperature

5

## Work done (by a force)

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W = F x D

Work = Force x Distance

6

## Power (energy and time)

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P = E ÷ t

Power (W) = Energy transferred (J) ÷ Time (s)

7

## Voltage (current and resistance)

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V = I x R

Voltage = Current x Resistance

8

## Current (coulombs and time)

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I = Q ÷ t

Current = Coulombs ÷ Time

9

## Energy transferred in a circuit

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E = Q x V

Energy transferred = Coulombs x Voltage

10

## Power (current and voltage)

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P = V x I

Power = Voltage x Current

11

## Power (current and resistance)

###
P = I² x R

Power = Current² x Resistance

12

## Frequency of alternating current

### Frequency = 1 (s) ÷ Interval time (s)

13

## Density

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D = M ÷ V

Density = Mass (kg) ÷ Volume (m³)

14

## Specific latent heat

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E = M x L

Energy (for a change of state) = Mass (kg) x Specific Latent Heat

15