Consider the fireclay brick wall of example 1.1 that is operating under different thermal conditions. the temperature distribution, at an instant in time, is t(x) = a + bx where a = 1400 k and b =− 1000 k/m. determine the heat fluxes, q " , and heat rates, , at and x qx x = 0 x = l. do steady state conditions

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

The radius of a sphere is increasing at a rate of 9 cm/ sec. find the radius of the sphere when the volume and the radius of the sphere are increasing at the same numerical rate.