Using your knowledge of the approximate mass of an automobile as well as the frequency with which you feel it oscillate when you go over a bump, estimate the value of the effective spring constant of the suspension. judging how long it takes for the oscillations to die out, estimate the value of the damping constant b.

Consider a spherical container of inner radius , outer radius r2, and thermal conductivity k. express the boundary condition on the inner surface of the container for steady one-dimensional conduction for the following cases: (a) specified temperature of 50°c, (b) specified heat flux of 30 w/m2 toward the center, (c) convection to a medium at t with a heat transfer coefficient of h