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Refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at 100 kPa with a quality of 20 percent and leaves at 100 kPa and -26°C. If the compressor consumes 400 W of power and the COP the refrigerator is 2.2, determine (a) the mass flow rate of the refrigerant and (b) the rate of heat rejected to the kitchen air.
the position of a point p on a line is given by the equation x t sinpi t2. the point starts moving at t0. find the
Design life is 9630 hours, rotating at 250 rpm, load of 880 lbs, what is the basic design load rating (assuming no axial loads)?
a cantilever beam ab is loaded by a couple m0 at its free end see gure. the length of the beam is l 20m and the
Prepare a Journal paper on Renewable Energy
you are given a task of compressing a fixed quantity of gas from P1,T1 to P2,T1. you wish to do this using a polytropic process coupled with a constant pressure P2 heat-transfer process. determine the polytropic process that minimizes the entropy ..
in a system a lever needs and effort of 200n to lift a load of 350n. the end of the lever arm moves 50cm and the load
2 kg of water at 10oc and atmospheric pressure are placed in a pressure cooker and heated until the water boils at
the coefficients of static friction and kinetic friction 0.4, 0.30 between all surface of contact. determine the force p for which motion of the 30kg block is impending if cable AB is attached is shown and removed.
answer the following questions1. name six types of springs.2. name three types of gears.3. state hookes law.4. give the
capacitor with capacitance 6.00 microf is connected to a resistor with r 780 o in series and an emf source of 25.0 v
an electric power plant uses solid waste for fuel in the production of electricity. the cost y in dollars per hour to
a composite wall made up of two materials. the temperatures on the left and right faces are maintained at constant
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