Physics formulae

Beschreibung

Quick way to test how much formulas you can remember correctly.
Teo Chun Min
Karteikarten von Teo Chun Min, aktualisiert more than 1 year ago
Teo Chun Min
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Zusammenfassung der Ressource

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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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