Physics I - Geometry and Kinematics Quantity Symbols Symbo l t, T second s x, y, z, r, s, meter m Time, Period Length, Position, Displacement Units Definition , Velocity, Speed v, vx, meters per second m/s Acceleration a, ax, meters per second squared m / s2 Angle θ, ϕ radian rad Angle θ, ϕ degree ° Area A square meters m2 Volume V cubic meters m3 1 rad = 1 m / m (yes, a meter per meter) 360° = 2π radians Physics I - Non-rotating Dynamics Quantity Symbols Mass m, M Density Force Friction Coefficient Energy, Work ρ F, Units kilogram kilograms per cubic meter , Fx μ W, KE, PE, K, U newton (dimensionless) joule Momentum, Impulse I kilogram meter per second Pressure P pascal Symbol Definition kg kg / m3 N (n/a) J kg⋅m / s Pa 1 N = 1 kg ⋅ m / s2 1 N/N 1 J = 1 N⋅m = 1 kg⋅m2 / s2 1 kg ⋅ m / s = 1 N ⋅ s 1 Pa = 1 N / m2 Physics I - Torque and Rotation Quantity Symbol s Units Symbol Torque τ newton meter N⋅m Moment of Inertia I kilogram meters squared Angular Velocity ω radians per second rad/s Angular Acceleration α radians per second squared rad/s2 Definition (not the same as a joule!) kg ⋅ m2 1 rad/s = 1 s−1 2π rad/s = 1 rev/s = 60 RPM Physcis II - Electricity and Magnetism Quantity Charge Electric field Electric potential, voltage, EMF, potential difference Symbol q, Q → E V, ℰ Units coulombs newtons per coulomb Symbol Definition C N/C 1 N/C = 1 V/m volts V 1 V = 1 J/C Current I amperes A 1 A = 1 J/s Resistance R ohms Ω 1 Ω =1 V/A Power P watts W 1 W = 1 J/s Capacitance C farads F 1 F = 1 C/V Dielectric Constant κ (dimensionless) Magnetic Field B → tesla T 1 T = 1 N/(A⋅m) Magnetic Flux ΦB webers Wb 1 Wb = 1 T⋅m2 Inductance L henries H 1 H = 1 Wb/A Reactance, Impedance X, Z ohms Ω Frequency f hertz Hz Wavelength λ meters m Angular Speed ω radians per second s-1
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