2.  Which of the following is/are true of angular momentum? a)  torque is time derivative of angular momentum b)  angular momentum is conserved in a system that has no losses (like friction) c)  angular momentum is a vector quantity d)  a-c are all correct

Example Definitions ----Example Equationsa) constant temperature---1) D P = 0b) No change with time----2) dE/dt = 0c) constant pressure----3) T1 = T2 , or D T = 0d) No heat transfers----4) Q = 0 1. Term              Write the definition and equation for steady state    Steady-state----   b) Approximate values for v, u at liquid states can be obtained using saturated liquid data. Since the values of v and u for liquids change very little with pressure at a fixed temperature.  : v (T, p)= vf(___), u(T,p)=ufc) Write the equation to calculate the maximum theoretical coefficient of performance for the Refrigeration cycle___________________________________d) Write the equation to calculate the maximum theoretical coefficient of performance for the Heat pump cycle __________________________________e) The thermal efficiency of an irreversible power cycle is always ______ than the thermal efficiency of a reversible power cycle when each operates between the same two thermal reservoirs. ηirrev…

I tried this problem the only way I can think of and I don't know what I could be missing it would be really helpfull if you could show me what I am misssing in my calculations

4.) Please help with equation, gravity is g=32.2 ft/sec^2 or g=9.81 m/sec^2

State the operation principle of pressure-limiting variable vane pump according to the following figure