Find the order of magnitude of your age in seconds.

Day 12 2/1/2016 Topics for Midterm fluids of all kinds, not differential equations harmonic oscillator, up to damping simple harmonic motion some problems with damping and resonance after exam Read 15.1, 15.2, 15.4 Waves y(x, t) = Asin(kx wt) displacement amplitude of displacement t = 0 y(x, t) = Asin(kx) x = 0 y(x=0, t) = Asin(wt) = Asin(wt) y(x, t=0) = y(x + λ, t=0) Asin(kx) = Asin[k(x+λ)] kλ = 2π 2π The wave number k = γ Asin(wt) = Asin[w(t+T)] wT = 2π → w = 2π = rad angular frequency T s frequency f → f = T1 Ex. vw= 0.5 cm/s A = 1cm T = 8s λ = 4cm k = π rad ω