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An energy-source at 1000 K transfers heat to a completely reversible heat engine. This engine transfers heat to a sink at 300 K. How much heat must be transferred from the energy-source to increase the entropy of the energy-sink by 20 kJ/K?
water at 10degc is pumped from a lake through a pipe to an elevation of 25 m above the lake surface. the pipe is 650 m
the figure below shows the geometrical stress concentration factor k for a flat bar loaded in uniaxial tension. the
an inverted conical container 26 in in diameter and 44 in high is filled with a liquid at 20degreesc. the liquid weight
a what is the total volume of air drawn into the three cylinders each time the engine executes one revolution?b what is
The uniform rectangular plate is released from rest in the position shown. Determine the maximum angular velocity during the ensuing motion. Friction at the pivot is negligible.
a gas turbine for an automobile is designed with a regenerator. air enters the compressor of this engine at 100 kpa and
blocks a and b weigh 25 lb and 10 lb respectively and they are both at a height 6 ft above the ground when the system
a certain fluid at 10 bar is contained in a cylinder behind a piston the initial volume being 0.05m3. calculate the
a rigid tank is divided into two equal parts by a partition. one part of the tank contains 9.2 kg of compressed liquid
Drinking water at 10oC for an office complex must be pumped along a horizontal section of PVC pipe 50 m long at 2 m/s. The pipe has a nominal diameter of 62.5 mm and is Schedule 40. What is the head loss in m?
a centrifugal fan is to be used to take a flue gas at rest zero velocity and at a temperature of 352.6 k and a pressure
mr. john is considering two machines to purchase for his company. machine x will have a first cost of 80000 an
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