30 A cylinder with a moveable piston inside it holds a volme of air (Vi=0.129 m) at an initial pressure, P = 25.5 kPa. The pisto
30 A cylinder with a moveable piston inside it holds a volme of air (Vi=0.129 m) at an initial pressure, P = 25.5 kPa. The piston moves so that the final volume, V;, is 0.904 m; the temperature of the gas does not change during this process. (Soo the diagram shown.) Answer the three parts below, using three sig figs. 20 P(kPa) 0 1.0 0.5 Vm" Part A - This gas process would be classified as what? Part B - Consider any work or heat flow occuring with this process. (Pick all the statements that are correct.) There mus bo heat entering the gas somehow. There must be heat leaving the gas somehow. There is no heat entering or leaving the gas. The environment is performing work on the gas. Gas is performing work on the environment. There is no work involved in this process. The internal energy of the gas has increased during this process.
Q. 31. (a) Obtain an expression for the work done by an ideal gas in an adiabatic process. (b) The primary and secondary coils of a transformer each have inductance of 2 x 10-4 H. The mutual inductance between the windings is 4 x 10-5 H. What percentage of the flux from one coil reaches the other? (2)
Question 1 2.5 pts According to the second law of thermodynamics, which of the following applies for a process that occurs within a closed system? O entropy decreases O entropy increases O entropy equals work done O entropy remains constant [ 2.5 pts