10099529
Description
Flashcards by Oliver Faragher, updated more than 1 year ago
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Created by Oliver Faragher
about 7 years ago
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| Question | Answer |
| Gravitational potential energy | Ep = m g h |
| Kinetic energy | Ek = 1 ---- m v2 (squared) 2 |
| Weight | W = m g |
| Work | W = F s |
| Power | P = E/t OR P = W/t |
| Efficiency | Efficiency = Useful energy --------- x100 Total energy |
| Charge | Q = I t |
| Elastic potential energy | Ee = half k e2 (squared) |
| Potential Difference (Ohm's Law) | V = IR (Volts = Current x Total resistance) |
| Power | P = VI |
| Power | (I x I) x R |
| Energy Transfer | E = Pt |
| Energy Transfer | E = QV |
| Density | mass Density = --------- Volume |
| Pressure | force normal to a surface Pressure = ----------------------------------- area of that surface |
| Change in pressure or volume | p1 x v1 = p2 x v2 |
| Acceleration | change in velocity / time taken |
| Uniform motion w/ time | V = U + at |
| Uniform motion w/o time | V(Sq) - U(Sq) = 2as |
| Momentum | P = mv |
| Newtons 2nd law | F = ma |
| Acceleration | (v-u) / t |
| Inertial mass | Force/acceleration |
| Newtons 3rd Law | F1 = F2 (when two objects interact the forces are equal and opposite) |
| Force in momentum change | F = m (v-u) / t |
| Moment | M = Fd |
| Pressure due to a column of liquid | p = height of column x density of liquid x gravitational field strength |
| Force in a spring | F = ke |
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