derivation of Betz Limit in Converting the kenetic energy of the to mechanical energy by Integration.

Is there anyway to explain this without using an equation?

Ammonia (an ideal gas) is contained in a 1.5 cubic meter pistion. Initially it is 200kPa 20C but it is compressed to 40C (at a constant pressurre). During this process, 1500kJ of heat is rejected to th 20C surrounding and 750 kJ of work is done. Is this process possible?

1. Kittel Ch3-1. Free energy of a two state system. (a) Find an expression for the free energy as a function of 7 of a system with two states, one at energy 0 and one at energy E. (b) From the free energy, find expressions for the energy and entropy of the system. The entropy is plotted in Figure 3.11.

Q- mechanics, A fan consumes 50 W of electric power and has an air discharge of 0.25 kg/s, find the maximum air outlet velocity in this case.

Mass of P is 35kg and mass of R is 40kg. find Qx.

I need the answer as soon as possible

Calculate the boundary work done from state 1 to state 4, 1W4.

Q1/ A / A frictionless piston cylinder arrangement containing fluid 200 kJ of heat is transferred and the fluid internal energy reduces by 50kJ, how much is the boundary work done?

A fixed volume of propane is initially at T = 420 K and P = 3 MPa. The temperature is raised to T = 500K. Find the current pressure of the propane with thermodynamic reasoning