*Question 4 values =(A = 20) If you can question 5 values =(Q=190, k=380, L=7, R=0.17)

the time t = 7. (Hint: the height at t - 7 can be found as jo u(t) dt). Give the answer correct to 1 d.p. 4. The angular displacement, 0, of a particle in circular motion is given by = - sin(At = = ).OstS n (a) Find an expression for angular acceleration, or. (b) Determine the first time t for a = 0. 5. The temperature 0 of a pipe with inner radius r is given by 0(T) =- Q 2 7KL In(T), where Q is the heat transfer rate, L is the length of the pipe, and k is the thermal conductivity. (a) Find the rate of change of temperature, dr as a function of radius. (b) Find the value of the rate of change of temperature for T = R