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Given that annual demand for a product is 20,000 units, cost per unit = $6.00, holding cost rate = 2.5%/month, changeover (setup) time between products averages 2.0 hr, and downtime cost during changeover = $200/hr, determine
(a) economic order quantity and
(b) total inventory costs for this situation.
The thermal efficiency of a heat engine is 40% and produces 100kW. Please determine the heat transfer rate to this engine and heat rejection rate to the surrounding.
the fluid dynamic characteristics of a golf ball are to be tested using a model in a wind tunnel. the dependent
A 25-kg block of copper at initial temperature of 1500C equilibrates with 0.79 kg of liquid water at an initial temperature of 200C in an insulated tank. If the average specific heat of copper can be taken to be 0.395 kJ/kg.K, determine the final tem..
air flows through a nozzle at high velocities such that compressible flow effects are important. the air exits the
the rigid bar is orginally horizonal and is supported by two cables each having a cross-sectional area of 0.05in2 and
When the tank is half-full, determine the equation that relates the pressure at the gage to the constant horizontal acceleration of the truck.
an adiabatic air compressor is to be powered by an adiabatic steam turbine. steam enters the turbine at 12.5 mpa and
a 1-in diameter pure copper sphere is suspended in a room where the walls and air are all at 300k. the natural
a square duct 30 cm x 30 cm is maintained at a constant temperature of 30 degc. an airstream of 50 degc and 1 atm is
air at 1175 k 8 bar enters a turbine operating at steady state and expands adiabatically to 1 bar. the isentropic
0.5 kg of water initially at 300 kpa 200oc is compressed in a piston-cylinder assembly to 1500 kpa 210oc. if heat
the purification of hydrogen gas is possible by diffusion through a thin palladium sheet. calculate the number of
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