Air enters a nozzle in steady flow at 280 kPa and 77 C with a velocity of 50 m/s. The air leaves the nozzle at 85 kPa and 320 m/s. The atmosphere which surrounds the nozzle is at 20 C. The nozzle is not well insulated; heat transfer losses from the nozzle are estimated as 0.35 kJ/kg. Using the air tables find the exit temperature of the air and the total entropy change for the process.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Answer8.0m;