Physics equations gcse
- Created by: izzysmith
- Created on: 15-05-17 18:33
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- PHYSICS EQUATIONS
- Workdone = force x distance
- W = F x d
- Efficiency% = useful energy (J) / total energy (J) (x100(%))
- Change in objects gravitational potential energy store = mass x gravitational filed strength x change in height
- /_\ Ep = m x g x /_\ h
- Kinetic energy store = 1/2 x mass x velocity²
- Ek = 1/2 x m x v²
- Power = energy / time
- P = E / t
- Weight = mass x gravitaional field strength
- W = m x g
- g = 9.8N/kg
- W = m x g
- Elastic energy potential store = 1/2 x spring constant x extension ²
- Ee = 1/2 x k x e²
- Hooke's Law = spring constant x extension
- F = k x e
- Power supplied = current x potential difference
- P = I x V
- Power = current² x resistance
- P = I² x R
- Charge flow = current x time
- Q = I x t
- Energy transferred = charge flow x potential difference
- E = Q x V
- Useful energy used = efficiency = energy supplied
- Force = mass x acceleration
- F = m x a
- Acceleration = final velocity- initial velocity / time taken
- a = v-u / t
- Momentum = mass x velocity
- p = m x v
- Potential difference = current x resistance
- V = I x R
- Workdone = potential difference x charge
- W = V x Q
- The correct rating for (A) fuse = power / potential difference
- A = P x V
- Workdone = force x distance
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