25kgmin1 of oil is heated as it flows through a thick wall copper pipe connected to the electrical power supply. The external wall of the pipe is perfectly insulated and the temperature of the inner wall is constant. Show that the oil velocity distribution given by: vz(r)=2vav(1(0.015r)2)wherevz[ms1],vav[ms1],r[m] is consistent with the boundary conditions and calculate the pressure drop in the pipe. Physical properties of oil Physical properties of copper Density,Specificheatcapacity,cpThermalconductivity,k8800kgm3420Jkg1K1370Wm1K1, A23604 Page 2 Any calculator Dimensions of the pipe InnerdiameterOuterdiameterLength0.03m0.06m1.0m