# physics

 The flashcards below were created by user walk1010 on FreezingBlue Flashcards. The Big 5 1) x = vt = ½ (v0 + v)t2) x = v0t + ½ a t23) x = vt - ½ a t2 4) v = v0 + at 5) v2 = v02 + 2ax6) v = (2gh)1/2 Stress stress = F/A Strain strain = ∆L / L Hooke's Law ∆L = FL/EA*where E is the modulus of elasticity Torque t = rF sinθ Impluse J = FT = ∆p Work W = Fd cosθ Power (with respect to work) P = W/t = Fv* only if F//v Density of H2O ρ = 1000 kg/m3 = 1 g/cm3 Bernoulli's Equation P1 + ρ1gy1 + ½ ρv12= P2 + ρ2gy2 + ½ ρv2 Pascal's Law F1 / A1 = F2 / A2 Volume Flow Rate and Continuity Equation Q = AVA1V1 = A2V2 Hydrostatic Pressure P = P0 + ρgD = Patm + ρgD (if P at surface is Patm) Fraction Submerged % submerged = Vsub / Vobject = ρojbect / ρfluid Current i = Q/t Power in AC Circuit P = irmsVrms = imax / √2 * Vmax / √2 Resistance R = ρL / A Potential Energy of Spring PE = ½ kx2 Frequency of Pendulums and Springs Springs: w = 1/2π √k/m (wackem)Pendulums: w = 1/2π √g/l (wiggle) Harmonic Wavelength of Open Pipe and Closed Pipe Open: λ = 2L/nClosed: λ = 2L/n Coulomb's Law FE = k Qq / r2 Electric Field due to Q E = k Q/r2 Electric Force by Field FE = qE Electric Potential Due to Q V = kQ/r Magnetic Force FM = qvB sin θ Capicitance C = kε0A/D = Q/V Electric Field Between Plates V = EDE = V/D Potential Energy of Capictors PE = ½QV = ½CV2 Capacitors in Parallel Cp = C1 + C2 + ... Speed of Sound V = √ B/ρ Intensity I = Power / A Intensity in dB β = 10 log I/I0 Doppler Effect fD = fs * v ± vD / v -+ vs*approaching means increasing f index of refraction n = c/v Total Internal Refraction sin θcrit = n2 / n1*where n2 < n1 Joul Authorwalk1010 ID27400 Card Setphysics Descriptionphysics Updated2010-07-20T05:59:09Z Show Answers