Water (density 1 kg/m^3) at 20 c flows at a reynolds number of 2000 inside a tube with a diameter of 3.66 cm, which is maintained at 70c. the flow velocity is 1 m/s. the heat transfer coefficient w/m^2-k for this flow is a)-500 b)-128.5 c)-50 d)-15 w/m

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj