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Hot air rises, but what happens to it as it rises through our atmosphere? Given the number density function Eq. 14.33 and the temperature curve plotted in Fig. 14.3 to the surrounding atmosphere, calculate the Final temperature of a bubble of air that rises adiabatically from a state z1 = 0, T 300 K to an altitude z2 = 20 km.
a 1 m3 rocket-propellant chamber is tilled with combustion gases at 3000 k and 7 mpa at the instant combustion ceases.
consider a steam turbine in which steam enters at 10.45 mpa and 780k with a flow rate of 38.739 kgs. a portion of the
the thermal efficiency of an internally reversible heat engine is 62 percent. the working fluid at 23 degrees c rejects
a cylindrical piston-chamber contains an ideal gas in equilibrium with the surroundings at a temperature of 293 k a
a projectile is launched straight upward at 73.5 ms from a height of 93.0 m at the edge of a sheer cliff. the
The thermal conductivity of a sheet of rigid, extruded insulation is reported to be k = 0.029 W/m· K. The measured temperature difference across a 20-mm-thick sheet of the material is T1 - T2 = 10° C.
When a positron and an electron meet, they are both annihilated into pure energy. Calculate how much energy (in MeV) is released in this reaction assuming that each particle is moving at 50% the speed of light.
combustion products with the molar anaylisis of 10 co2 20 h2o 70 n2 enter an engines exhaust pipe at 1000f 1atm and are
a u-tube manometer is initially filled with water but exposed to a pressure difference such that the water level on the
in the reservoir of a supersonic wind tunnel the pressure and temperature of air are 10 atm and 320 k respectively.
determine the velocity of on the outer rim of the spool at the instant shown when the cable is pulled to the right with
Evaluate the concentration of vacancies in copper at 650C temperature. What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at s..
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