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Using data from Figure 9.14, design a 9 ft deep ground-pipe system for Dallas in June to deliver 1000 cfm at 75°F when the outside air temperature is 90°F.
A rocket nozzle has a chamber pressure of 20 Bar (2 MPa) and a chamber temperature of 2750 K. The rocket is designed to operate isentropically at 12,500 m altitude. Note that the pressure at 12,500 m can be estimated using this equation P/P0 = exp [-..
radioactive wastes are temporarily stored in spherical container the centerof which is buried a distance of 10m below
starting from rest a particle moving in a straight line has anacceleration of a 2t - 6 ms2 where t is inseconds. what
A turbojet is flying with a velocity of 900 ft/s at an altitude of 20,000 ft, where the ambient conditions are 7 psia and 108F. The pressure ratio across the compressor is 13, and the temperature at the turbine inlet is 2400 R.
a man climbing a staircase of height 10m carries a brief case weighing 100n he placed a briefcase on each step before
an enclosure box surrounds some electronics that draw 25 w of electrical power. for heat transfer we will just consider
It is desired that the 100-lb container, when released from rest in the position shown, have no velocity after dropping 7 ft to the platform below. Specify the proper weight W of the counterbalancing cylinder.
in a steam power plant some steam from the turbine is bled off stream 1 and used in a mixing chamber to heat sub-cooled
Find the tensile force F in each bolt and the tensile stress σ in the viewport if the radius of the hemisphere is 7.0 in. and its thickness is 1.0 in
The isentropic compressor efficiency is 80%. Refrigerant exits the condenser as a saturated liquid at 160 lbf/in.2 The mass flow rate of the refrigerant is 0.15 lb/s. Kinetic and potential energy changes are negligible as are changes in pressure f..
a spherical interplanetary probe of 0.5-m diameter contains electronics that dissipate 150 w. if the probe surface
n air compressor operates at steady state with air entering at p1 1 bar t1 17 c and exiting at p2 5 bar. the air
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