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physics1028 cheat sheet

# physics1028 cheat sheet - Equations Newtons 1st Law Fnetx,y...

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Equations: Newton’s 1 st Law: F netx , y = ΣF x,y = 0 2 nd Law: F netx , y = ΣF x,y = m*a x,y 3 rd Law: F Ab = -F Ba |F| = √F x 2 + F y 2 Weight = m*g W= |F|*|Δy| or |F|*|Δy|*cosθ or F x * Δx + F y * Δy W= F ext /A *(A*Δx) = -p*ΔV = –p 0 *(V f -V i ) p= F perpendicular /A p = 1/A* F * n F = p*A A circle = π*r 2 = (π/4)*d 2 A sphere = 4* π *r 2 A Triangle = base*height/2 A cylinder = 2* π *r*h E kin = ½* m*v 2 E pot = m*g*h v final = √(2*W/m)+V 2 initial y at top = E pot /(m*g) Q = c*m*ΔT or C*n*ΔT Q = ΔE thermal ΔU closed = W+ Q t = r 2 * ρ *c/ λ -mb lock *g*Δy = c H2O *m H2O *ΔT ΔT = ΔE thermal / ρ*V*c Charles’s: V/T Boyle’s Law: p*V P=W/Δt = F*Δy/Δt = F*v V dead space /V total = f exhaled – f alveoli /f inhaled – f alveoli V tidal /T outside = V lungs / T lungs p pleura = p gap – p atm p alveoli = p lungs - p atm PV = nRT p*V = (m/M)*R*T n= m/M M = (m/V)*(R*T/p) = ρ(R*T/p) M = ρ *V m=n*M ρ = n*M/V U = 3/2R*T = 1/2M*v 2 (For 1 mol J/mol) ε = 3/2*R/ N A *T = 3/2*k*T v rms = √3*R*T/M = √3*k*T/m p=m*v 2 /V η= |net work|/heat input = T high – T low /T high V air = h gas *A Fournier’s Law: Q/t = λ*A*ΔT/L Fick’s Law: m/t = D*A*(Δρ /l) j = D*A*(Δc/l) c = ρ/M Arrhenius’s: ln(D) = ln(D 0 ) - (ΔE/k*T) Einstein: Λ = √2*D*t t = Λ 2 /2*D f = r/2 M = h I /h O

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