Physics Entrance Formulas
Welcome!
Topics
Energy Transfer/Waves
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- v = fλ
- i = r (in reflection of light)
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In refraction of light: (Snell's Law)
- n = (sin i)÷(sin r)
- n1 sin i = n2 sin r
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For light waves:
Motion
- Δanything = Finalanything - Initialanything
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a = (v-u)÷t
Newton's Equations of Motion were derived from that equation:
- v = u + at
- s = ut + (1÷2)at2
- v2 = u2 + 2as
- Fnet = ma (Newton's Second Law of Motion)
- v = s÷t (in objects with constant velocity)
Electricity
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- V÷I = R
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In series circuit:
- R = R1 + R2 + R3 + ...
- V = V1 + V2 + V3 + ...
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In parallel circuit:
- 1÷R = 1÷R1 + 1÷R2 + 1÷R3 + ...
- I = I1 + I2 + I3 + ...
- P = IV
Energy
- KE = (1÷2)mv2
- WD = ΔKE = (1÷2)mv2 - (1÷2)mu2
- CR = (vb - va)÷(ua - ub)
- GPE = mgh