2512490
Description
Flashcards by Teo Chun Min, updated more than 1 year ago
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Created by Teo Chun Min
over 10 years ago
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| Question | Answer |
| average speed | total distance / total time or (u + v) / 2 |
| acceleration | a = (v-u) / t |
| speed (from a distance-time graph) | gradient of a distance-time graph |
| acceleration (from a speed-time graph) | gradient of speed-time graph |
| distance travelled (from a speed-time graph) | area under a speed-time graph |
| Resultant force | F = ma |
| Resultant force (from a free-body diagram) | F = F(applied) - F(friction) |
| weight | W = mg |
| density | density = m/V |
| moment of a force | moment = F d (where d is perpendicular distance to F) |
| Principle of Moments | Taking moments about the pivot total clockwise moments = total anti-clockwise moments |
| pressure | pressure = F / A |
| pressure of liquid | pressure = hρg |
| Pascal transmission of pressure | pressure at piston A = pressure at piston B |
| kinetic energy, KE | |
| gravitational potential energy, GPE | GPE = mgh |
| work done | work done = F d (where d is the distance travelled parallel to F) |
| Principle of conservation of energy 1 (falling ball) | loss of GPE = gain in KE |
| Principle of conservation of energy 2 (throwing a ball up vertically) | loss in KE = Gain in GPE |
| Principle of conservation of energy 3 (car accelerating due to a force) | gain in KE = work done by force |
| Principle of conservation of energy 4 (car brakes to a rest) | loss in KE = work done by friction |
| power (non-electrical) | P = E / t P = W / t P = F v |
| calibration of thermometer | |
| calibration of thermocouple | |
| energy gain/loss by substance when the temperature change by θ | Q = mcΔθ (where c is the specific heat capacity of the substance) |
| energy gain/loss when a substance undergoes change of state | Q = ml (where l is the specific latent heat of fusion or vaporization) |
| Period, T (in waves) | T = 1 / f |
| wave velocity, v | v = f λ |
| speed of sound, v (in a situation where there is an echo) | v = 2d / t |
| refractive index, n (using i and r) | |
| refractive index, n (using speed of light) | |
| refractive index, n (depth of object) | |
| critical angle, c | |
| charge, Q (units?) | (coloumbs, C) |
| Voltage, V (unit?) | (volt, V) |
| resistance, R (unit?) | (ohm, Ω) |
| resistance, R (in terms of dimensions of wire) | p is the resistivity of the wire (depends on material) |
| Effective resistance (series circuit) | |
| Effective resistance (parallel circuit) | |
| Potential divider (series circuit) | |
| Power (electrical power) | |
| Electrical energy | E = VIt |
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