Which statement does not accurately describe veins? (a) Have less elastic tissue and smooth muscle than arteries, (b) contain more fibrous tissue than arteries, (c) most veins in the extremities have valves, (d) always carry deoxygenated blood.

LR Circuits ! Inductance and resistor in series with battery of EMF V ! Start with no initial current in circuit "Close switch at t = 0 "causes voltage drop across inductor)ease ! Find i(t) "Resistor:▯V = Ri "Inductor: ▯V = L di/dt R "Apply loop rule ε" L di ε − Ri− L = 0 dt PHY2049: Chapter 30 55 Analysis of LR Circuit ! Differential equation is+i⎜ R⎟ = ε dt ⎝ L⎠ R −tR/L ! General solutioni =ε / R+ Ke "(Check and see!) "K = ▯ε/R (necessary to make i = 0 at t = 0) ε −tR/L Rise from 0 with i = R (1