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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

E = ½ x k x e²

Energy = ½ x Spring constant x Extension²

3

Gravitational potential energy

E = m x g x h

Energy = Mass x Gravitational constant x Height

4

change in thermal energy

ΔE = m x c x Δθ


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

5

Work done (by a force)

W = F x D

Work = Force x Distance

6

Power (energy and time)

P = E ÷ t

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

7

Voltage (current and resistance)

V = I x R

Voltage = Current x Resistance

8

Current (coulombs and time)

I = Q ÷ t

Current = Coulombs ÷ Time

9

Energy transferred in a circuit

E = Q x V

Energy transferred = Coulombs x Voltage

10

Power (current and voltage)

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

D = M ÷ V

Density = Mass (kg) ÷ Volume (m³)

14

Specific latent heat

E = M x L

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

15

Gas pressure

p x V = k

Pressure (Pa) x Volume (m³) = Constant
(only if the temperature remains constant)