A cargo ship model 1000 ft long is to be modeled in a towing tank at a speed that will produce waves that are dynamically similar to those observed around a prototype. The tests are to represent the prototype moving at a speed of 26 knots (30 MPH, miles per hour). If the model length is 5 ft, the model speed (fts) that the tests need to be is most nearly

A. 0.945
B. 1.45
C. 2.12
D.3.11

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