## AP Physics: mechanics, electricity, magnetism

##### Created by:

cabinofzen  on May 9, 2012

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# AP Physics: mechanics, electricity, magnetism

 vi + atvf
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#### Definitions

vi + at vf
vit + ½at² Δd
vi² + 2a(Δd) vf²
v² / r ac (centripetal acceleration)
dFsinθ torque
FΔt = Δp = mΔv J (impulse)
FΔdcosθ W (work)
(W / t) = Fvcosθ P (power)
½kx² PEs
2π√(m / k) Ts (period of spring)
2π√(l / g) Tp (period of pendulum)
1 / f T (period)
F / q E (electric field)
qΔV = (kq₁q₂ / r) EPE
- V / d E (for parallel plates ONLY)
kq / r V (potential difference)
(Q / V) = (ε0A / d) C (capacitance)
½QV = ½CV² EPE (for capacitors ONLY)
(V / R) = (ΔQ / Δt) I (current)
ρl / A R (resistance; of a wire)
IV P (power, for electric circuits)
C₁ + C₂ + C₃ + ... Ctot (in parallel)
(1 / C₁) + (1 / C₂) + (1 / C₃) + ... 1 / Ctot (in series)
qvBsinθ = BlIsinθ FB (magnetic force)
μoI / 2πr B (magnetic field)
BAcosθ Φ (magnetic flux)
Blv = (- ΔΦ / Δt) emf (generated potential difference V)

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