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### 78 Cards in this Set

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 Average Acceleration ΔV / Δt Final Velocity Vi + at Displacement ΔX = Vi*t + 1/2(at^2) Final Velocity Vf^2 = Vi^2 + 2aΔX Average Velocity 1/2 (Vi + Vf) Gravitational Force F = (G*m1*m2)/r^2 Torque τ = rFsinθ Kinetic or Static Friction F(friction)≤ μ * N Centripital Acceleration (velocity)^2 / (radius) Centripital Force Mass * Acceleration or (mass)(velocity)^2 / (radius) Work F d cosθ Power Work/time Kinetic Nrg KE = 1/2 (mass)(velocity)^2 Potential Nrg U = mass * gravity * height momentum p = mass * velocity Impulse Δp = Force * time or m*Vf - m*Vi Celsius C = K -273 Thermal Expansion ΔL = α L ΔT Volume Thermal Expansion ΔV = β V ΔT Heat Gained (Q) Q = m c Δt Heat Gained (Δphase) Q = m * L (L=heat of transformation constant) 1st Law of Thermodynamics ΔU = Q - W (Q=heat nrg and W=work) 2nd Law of Thermodynamics ΔS of closed system will increase or remain unchanged Density ρ = mass / volume Pressure P = Force / Area Absolute Pressure Pabs= Patm + ρgh Two Pistons F1/A1 = F2/A2 Boyant Force FB= ρ g V (where V is the volume of the object and ρ is the density of the liquid) Velocity in different areas of a pipe (volume flow rate) A1V1=A2V2 Stress F/A Strain ΔL/L Y (Young's Modulus) Y= (F/A) / (ΔL/L) Coulomb's Law (Force b/n charges) F = (k*q1*q2) / r^2 Electric Field E = k*q / r^2 Force of E Field on a charge F = q * E Electric potential V = kq / r Electric Potential Nrg U = qV (charge * voltage) Force of B Field on charge q v B sinθ Current I = Δq / Δt Force of Wire with current F = I L B sinθ (current*length*Bfield) B field created by long straight wire B = (μo*I) / (2πr) B field created by loop wire B = (μo * I) / (2r) Voltage V = IR Power in circuits P = IV Resistors in series Rs = R1 + R2 ... Resistors in Parallel 1 / Rp = 1/R1 + 1/R2 ... Capacitance C = Q / V E field b/n capacitor plates E = V / d Capacitors in series 1 / Cs = 1/C1 + 1/C2 ... Capacitors in Parallel Cp = C1 + C2 ... Irms Imax / sqroot2 Vrms Vmax / sqroot2 Imax Irms * sqroot2 Vmax Vrms * sqroot2 Hookes Law (Force of spring) F = -k x angular freq of spring ω = sq root (k/m) angular freq of pendulum ω = sq root (g/L) Frequency F = 1 / T T=period Period of Spring T = 2π sqroot(m/k) Period of Pendulum T = 2π sqroot (L/g) Velocity of wave V = fλ Speed of Light c = 3x10^8 Intensity I = Power / area Object and image formula 1/o + 1/i = 1/f = 2/r Focal length F = radius curve / 2 Magnification m = -image distance / object distance or -i / o Index of Refraction n = c / v Snell's law of refraction n1 sinθ1 = n2 sinθ2 Lens Power P = 1 / f Photon Nrg E = h f or E = hc/λ h= 6.6x10^-34 J*s h= 4x10^-15 eV Binding Nrg E = Δm c^2 Alpha Particle decay -4 -2 -Beta decay +0 +1 +Beta decay (positron) -0 -1 Gamma decay nothing!! 1/2 life formula Nf = Ni * e^(λt) Capacitance C = k*(perm. free space)* (A/d) A=area d=distance b/n plates Work done by gas expansion W = P*ΔV