Helium is to be compressed from 120 kpa and 310 k to 700 kpa and 450 k. a heat loss of 20 kj/kg occurs during the compression process. neglecting kinetic energy changes determine the power input required for a mass flow rate of 100 kg/min. round your answer to the nearest integer. kw

Wo small variable-thrust jets are actuated to keep the spacecraft angular velocity about the z-axis constant at ? 0 = 1.16 rad/s as the two telescoping booms are extended from r1 = 1.18 m to r2 = 4.69 m at a constant rate over a period of 124 seconds. the small 19-kg experiment modules at the ends of the booms may be treated as particles, and the mass of the rigid booms is negligible. determine the necessary thrust t for each jet as a function of time where t = 0 is the time when the telescoping action is begun. after you have the general expression for t, answer the questions. show work.