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A pipe transports water in a 4-cm-diameter pipe with an average velocity of 10 m/s. The pipe undergoes a 90 degree bend and exits out a 2-cm-diameter nozzle. Assuming no friction losses in the bend, the total force of teh water on the bend is nearest:
A) 1070 N
B) 1180 N
C) 729 N
D) 502 N
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 160 lbf/in.2 with a quality of 70%. The mixture is heated and expands at constant pressure until a final temperature of 480oF is reached. Determine the work for the proces..
consider a container of volume 250ml that is divided into two compartments of equalnbspsize. in the left compartment
consider oxygen at 100 bar and specific volume of 0.08.a calculate the temperature t using the van der waals equation
Air is expanded in a poly tropic process from a pressure and volume of 350 kPa and 0.03 m3 until its volume is increased by 6.667 times. The poly tropic process has an exponent n = 1.5
Water is boiled at 300 kPa pressure in a pressure cooker. The cooker initially contains 3 kg of water. Once boiling started, it is observed that half of the water in the cooker evaporated in 30 minutes.
A heater exchanger uses 6 kg/s cold water at 10 C in a counter-flow heat exchanger to cool a hot glycerine (cp = 2.05 kJ/kg-K) stream that enters at 300 C at a rate of 10 kg/s. If the water exits the heat exchanger at 50 C. find the rate of heat tran..
an automobile tire with a volume of 0.5m3 is inflated to a gage pressure of 200 kpa. calculate the mass of air in the
one-tenth kilogram of water initially at 3 bar 200c undergoes a process to 15 bar 210c while being rapidly compressed
a furnace wall is composed of three layers 15 cm of firebrick k 1.5 wmk followed by 22.5 cm of kaolin insulation brick
air at t11300 0r p116 lbfin2 enters a counterflow heat exchanger operating at steady state and exits at p214.7 lbfin2.
1 kg of a gas in a piston-cylinder assembly undergoes a Carnot power cycle for which the isothermal expansion occurs at 800 K. The change in specific entropy of the gas during the isothermal compression, which occurs at 400 K is -25 kJ/kg. K.
A rocket is launched horizontally (x direction) at an initial velocity of 100 m/s and travels along a parabolic path given by y 2 = (100x) km. If the x component of acceleration is ax = (2t + 15) m/s2 , where t is in seconds, determine magnitude and ..
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