why is the T at P=5Mpa is equal to 200 deg C?

1.) 0.44 kgm of air at 1800C expands adiabatically to three times its original volume and during the process, there is a decrease in temperature to 150C. Find the work done on the substance.

consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?

A vessel of water containing 300 kg of water is initially at 270 K. A 100 kg piece of metal,initially at 1300 K, is placed in the water vessel to cool and the vessel is closed. The specificheat of the metal is 0.6 kJ/kg K and 4.2 kJ/kg K for water. Assume the specific heats areconstant and that the vessel is well insulated.a. Find the final equilibrium temperature after cooling. b. Find the amount of entropy generated within the vessel in kJ/K.

please help ne answer this problem with coomplete solution, cancellation of units, and figure. I promise to give high rating. thank you very much   NOTE: Please answer letters: F & G only

Suppose 1.17 kg of water at 19.3 C is mixed with 1.33 kg of water at 94"C. After equilib- rium is reachod, the mixture has an uniforem temperature of 59.0404 C. What is the change in entropy of the syetem? 4186 J/kg K. Arwer in unita of 3/K. The specific heat of water is

I need the answer as soon as possible

Exercises 1. The approach & efficiency of cooling tower is 10°C 4 60% respectively. If the tempe- rature of the H₂0 leaving the tower is 37°C, What is the temperature of H₂0 entering?

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Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa. Find         1- the final temperature         2- the specific work output