CheatSheet for General Physics Final | PHYS 2205, Study notes of Physics

Download CheatSheet for General Physics Final | PHYS 2205 and more Study notes Physics in PDF only on Docsity! SI UNITS Weight - N Force – N Period – s Frequency – Hz Energy – J Work – J Spring constant – N/m Power – W Torque – m·N Revolution – Rad Inertia – kg·m² Momentum – kg·m/s or N·s Impulse – kg·m/s or N·s Density – kg/m³ Pressure – N/m² or Pa Intensity – w/m² Intensity level – β Wavelength - m FORMULAS Kinematics v = d/t a = Δv/Δtv/Δv/Δtt -constant a vf = vi + at xf = xi + vit + ½at² xf = xi + ½(vi + vf)t vf² = vi² + 2a(xf-xi) vave = (vf + vi)/2 R = vi²sin(2θ)/g)/g Forces Fnet = ma FG = -mg FGx = mgsinθ)/g FGy = -mgcosθ)/g FN = mg Ffr = μkFN Gravitation Fobj1,obj2 = Gm1 m2/R² G = 6.67  10-11N·m²/kg² Circular Motion ac = v²/R Fnetc = mv²/R T = 1/f f = tper cycle v = 2πR/T = 2πRR/T = 2πR/T = 2πRRf Energy KE = ½mv² PES = 1/2kx² PEG = mgh Powerave = W/t = Fd/t = Fvave E = KE + PE WNC = KEf – KEi KEi + PEi = KEf + PEf Liner Momentum p = mv Impulse = FnetΔv/Δtt = maΔv/Δtt = Δv/Δtp m1iv1i + m2iv2i = m1fv1f + m2fv2f KEi = KEf ½m1v1i² + ½m2v2i² = ½m1v1f² + ½m2v2f² Center of Mass xCM = Σmmixi/Σmmi yCM = Σmmiyi/Σmmi Rotational Motion -constant angular a ωf = ωi + αt θ)/gf = θ)/gi + ωit + ½αt² θ)/gf = θ)/gi + ½(ωi + ωf)t ω² = ω0² + 2αθ)/g ω = (ω + ω0)/2 N = Δv/Δtθ)/g/2πR/T = 2πR f = #rev/time l = Rθ)/g - linear acceleration v = Rω a = atan + acentripetal(ω²R) I = Σmmr² = m1r1² + m2r2² + … Iblob = mr² τ = rFperpedicular τ = Iα Pressure in Fluid P = ρghgh Pabs = Patm + PG Ph = Papplied + ρghgh F1/A1 = F2/A2 FB = mflg = ρghflVfl dispg wtapparent = mg - ρghflVfl dispg ρgh = m/v Fluids in Motion Mass flow rate Δv/Δtm/Δv/Δtt Volume flow rate Δv/ΔtV/Δv/Δtt (Δv/ΔtV/Δv/Δtt)in = (Δv/ΔtV/Δv/Δtt)out ρgh1A1v1 = ρgh2A2v2 P1 + ½ρghv1² + ρghgy1 = P2 + ½ρghv2² + ρghgy2 v1 = √2g(y2 – y1) Simple Harmonic Motion x = Acos(ωt) v = -Aωsin(ωt) vmax = Aω a = -Aω²cos(ωt) amax = Aω² - spring F = -kx k = mω² ω = √(k/m) 2πR/T = 2πRf = √(k/m) f = (1/2πR/T = 2πR)√(k/m) E = ½ mv² + ½ kx² + mgh vmax = Aω amax = Aω² Pendulum a = gθ)/g xarc = Lstringθ)/g a = (g/L)x ω = √(g/L) Waves v = fλ = λ/T Intensity (I) = Energy/(Time·Area) = Power/Area I1A1 = I2A2 vstring = √(FT/μ) μ = mass/length Sound vin air = 331m/s + (0.6m/s°C)(T°C) - open tube L = λ/2 v = fλ f = v/λ = v/(2L) β = (10dB)log10(I/I0) I0 = 1 × 10-12 w/m² x = logay y = ax log(ab) = log(a) + log(b) log(a/b) = log(a) – log(b) Reflection θ)/gI = θ)/gR Refraction n = c/v n1sinθ)/g1 = n2sinθ)/g2 θ)/gc = sin-1(n2/n1) Double Slit L = distance from slits to screen d = distance between slits y = distance from center in phase (bright) (R2 – R1) = dsinθ)/g out of phase (dark) tanθ)/g = y/L - far away screen constructive dsinθ)/g = nλ destructive dsinθ)/g = (n + ½)λ Single Slit D = width of slit Dark fringe Dsinθ)/g = mλ Bright fringe m = 0