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Water, initially a saturated vapor at 150 degrees Celsius, is contained in a piston-cylinder assembly. The water undergoes a polytrophic process (n=1) to a pressure of 0.01 MPa, during which the piston moves freely in the cylinder. If the change of state is brought about by heating the water as it undergoes an internally reversible process at constant temperature, determine the work and heat transfer per unit mass, each in kJ/kg.
two insulated tanks are connected by a valve. one tank initially contains 1.2 ib of air at 240 f 30 psia and the other
the 0.5m long container shown in the figure accelerates downhill 25 degrees to horizon so that the liquid surface is
a1 ft2 shallow pan with adiabatic sides is filled to the brim with water at 32 degree f. it radiates to a night sky
A hammer head H having a weight of 0.31 lb is moving vertically downward at 40ft/s when it strides the head of a nail with negligible mass and drives it into a block of wood. find the impulse on the nail if it is assumed that the grip at A is loose, ..
observing plastic deformationthe aim of this demonstration is to make some observations of the surface relief produced
design a rankin cycle to analyze. the only restrictions are that water must enter the turbine as a superheated vapor
when two cars a and b are next to one another they are traveling in the same direction with speeds va and vb
Consider just the vertical (y) response of the system when the beam is being stretched. Show that the spring constant, ka, is approximately 70.6 mN/m. What is the steady state amplitude of the vertical response? See Figure A below for an engine..
air at 100 kpa and 27degc enters an isentropic compressor at a rate of 100 ls and leaves at 1000 kpa. determine the
a 60-kg woman holds a 9-kg package as she stands within an elevator which briefly accelerates upward at a rate of g4.
an air conditioner can produce a 120 kjmin cooling effect while rejecting 2.5kw of heat. what is its cop and the
A large tower is to be supported by a series of steel wires; it is estimated that the load on each wire will be 13,300 N (3000 lbf). Determine the minimum required wire diameter, assuming a factor of safety of 2 and a yield strength of 860 MPa (12..
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