The child on the disk walks inward on the disk and ends up standing at a new location a distance r/2 = 0.95 m from the axle. now what is the angular speed? (it to do this analysis algebraically and plug in numbers at the end.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.