On a certain day the barometric pressure at sea level is 30.1 in. Hg, and the temperature is 708 °F. The pressure gage in an air- plane in flight indicates a pressure of 10.6 psia, and the temperature gage shows the air temperature to be 468°F. Estimate as accurately as possible the altitude of the airplane above sea level.

Fluids at rest possess no flow energy. a)- true b)- false

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false