A fluid expands reversibly according to a linear law from 3.8 bar to 1.1 bar, the initial volume is 0.006 m°. The fluid is then cooled reversibly at constant pressure, and finally compressed reversibly according to a law pv = constant back to the initial conditions of 3.8 bar and 0.006 m. Calculate the net work of the cycle if the work done during the constant pressure cooling isgiven by 5930 N.m. Sketch the cycle on a p-v diagram.

Q3: Air undergoes a three-process cycle. if the processes are :1→ 2: constant- pressure expansion .2→ 3: constant volume 3 → 1: constant-temperature compression .The necessary information is T1 = 100°C, T2 = 600°C, and P1 = 200 kPa. R=0.287 KJ/kg.K 1) Find the net work done for 1 kg A: 32.5 KJ B: 42.5 KJ C: 52.5 KJ D: 62 KJ

In a piston cylinder system, a fluid at 0.8 bar occupying 0.07 m³ is compressed reversibly to a pressure of 10.2 bar and specific volume of 0.6 m³/kg according to the law p = c. The fluid then expands reversibly according to the law pv² = c to 1.1 bar. A reversible cooling at constant volume then restores the fluid back to initial state. Calculate the net work for the process in Joules. To 3 d.p. and insert the unit symbol joules.

3) A cup of rather dilute hot tea initially at 140 degrees F is served to a customer at Howard Johnson's. Unfortunately, before they get around to drinking it, it has spontaneously cooled off to 200 0 100 degrees F. Calculate the change in this process. The temperature of the entropy of the universe for restaurant (the surroundings) is 70 degrees F. (DHD 2/6/22) Suppose that the heat has problem 3, in order to save the inside temperature is been turned off in the HoJo's in money in the cold winter months, and 32 degrees F. The hot tea cools from HOWARD 140 degrees F to 32 degrees F, and then freezes, making it JOHNSON'S impossible to drink. What is the change in entropy of the universe in this case? (DHD 2/6/22) LCE CREAM 28 FLAVORS Restaurant Return to problem 3. Suppose that our customer complains about the cold tea and is given a second cup of hot tea. Feeling especially hungry (for tea?) they mix the hot tea and the cold tea together so that they will have twice as much tea (albeit…