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AP Physics Equations
A whole crap load of AP Physics equations
| Question | Answer |
|---|---|
| Resistance in a wire | R = ρ(L/A) |
| 1 ampere | 1C/s |
| Electrical Power (Watt’s Law) | P = IV |
| Electrical Voltage | V = IR |
| Resistance in Series | R = R₁ + R₂ + R₃ + ... |
| Resistance in Parallel | 1/R = 1/R₁ + 1/R₂ + 1/R₃ + ... |
| Single Point Charge | E = (kQ)/r² |
| Electric Potential (some distance from a single point charge) | V = (kQ)/r |
| Parallel Plate Capacitor | C = (ε₀)(A)/d |
| Charge of e⁻ | -1.6⋿-19 C |
| Charge of Proton | 1.6⋿-19 C |
| Electrical Force | F = qE |
| Coulomb’s Law | F = k(Q₁Q₂)/r² --> K = 9⋿9 N*m²/C² |
| Pressure | P = P₀ + ρgh |
| Pressure | P(atm) + P = P(gauge) |
| Volume Flow Rate | A₁V₁ = A₂V₂ |
| Bernulis Equation | P₁ + ρgy₁ + .5ρV₁² = P₂ + ρgy₂ + .5ρV₂² |
| Specific Gravity | Density of object/Density H₂O |
| Buoyant Force | F = ρ(liquid)*V(submerged)*g |
| Pascal’s Principal | Apparent Weight = True Weight - Buoyant Force |
| Pressure | P = F/A |
| Density | D = m/v |
| Density H₂O | 1000 kg/m² |
| Heat Engine Efficiency | e = W/Q(hot) or e = (Q(hot)-Q(cold))/Q(hot) or e(ideal) = T(hot)-T(cold)/T(hot) |
| 1st Law of Thermodynamics | ΔU = Q + W |
| Isothermal gas | gas held at constant temperature (PV=nRT |
| Adiabatic gas | no heat flows in or out (ΔU = W) |
| Isobaric gas | constant pressure (Area under curve = work done) |
| Isochloric gas | constant volume (W = 0, ΔU = 0) |
| Ideal Gas Law | PV=nRT |
| STP (Standard Temp. and Pressure) | 1atm (1⋿5 pa) and 298 *K |
| Kinetic Energy | ΔKE = Δ.5mv² |
| Thermal Engery | ΔU = mgh = .5kx² |
| Heat | ΔQ = mcΔt |
| Thermal Expansion | ΔL = αL₀ΔT |
| Newton’s 1st Law | ΣF = ma |
| Friction (static) | F ≤ μN |
| Centripetal Acceleration | a = v²/r |
| momentum | p = mv |
| Impulse | J = FΔt = Δp |
| Gravitational Potential Energy | ΔU = mgh |
| Work | W = F*s = F*s*cos θ |
| Average Power | P = W/Δt or P = Fv |
| Force of a Spring | F = -kx |
| Potential Spring Energy | U = .5kx² |
| Period of a Spring | T = 2π√(m/k) |
| Period of a Pendulum | T = 2π√(l/g) |
| Period | T = 1/f |
| Universal Law of Gravitation | F = -G(M₁M₂)/r² |
| Universal Gravitational Constant | G = 6.67⋿-11 m³/kg*s² |
| Atmospheric Pressure | 1 atm = 1⋿5 N/m² = 1⋿5 pa |
| 1 Electron Volt | 1eV = 1.60⋿-19 J |
| Universal Gas Constant | R = 8.31 J/mol *k |
| Avogadro’s Number | 6.02⋿-23 J/K |
| pico | 10⁻¹² |
| nano | 10⁻⁹ |
| micro | 10⁻⁶ |
Created by:
chriso_cd
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