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An egg , initially at rest, is dropped onto a concrete surface; it breaks. Prove that the process is irreversible. In modeling this rocess treat the egg as the system and assume the passage of sufficient time for the egg to return to its inintial temperature.
1 a piston-cylinder device contains 5 kg of r134a at 800 kpa and 60 c. the refrigerant is now cooled at constant
two air flows are combined to a single flow. flow one is 1 m3s at 293 k and the other is 2 m3s at 473k both at 1 bar.
it takes 15 seconds to raise a 1200 kg car and the supporting 300 kg hydraulic lift platform to a height of 2.8 m. the
a point charge causes an electric flux of -750 nmc to pass through a spherical gaussian surface of 10.0 cm radius
a set of steel reinforcing rods is to be stretched axially in tension to create a tensile stress of 30ksi prior to
a 4140 steel alloy beam is designed to support a load at 50 of the yield stress. the beam is bolted to a bridge truss
a manufacturing firm produces four types of automobile parts. each is first fabricated and then finished. the required
water contained in a piston-cylinder assembly initially at 1.5 bar and a quality of 20 is heated at constant pressure
mr. john is considering two machines to purchase for his company. machine x will have a first cost of 80000 an
1 a closed container contains a third liquid water by volume and the rest of the volume is vapor. select the best
a rectangular intake air duct is 36 in. wide and 24 in. high. it runs for over 300 ft inside a warehouse and is at 50 f
the compressor mechanism shown in figure is driven clockwise by a dc electric motor at a constant rate of 800 rpm. in
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