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a an inventor claims to have developed a refrigeration unit with a cop of 85 which maintains the refrigerated space at
draw a standard 001 projection of white tin tetragonal ca0545 showing all poles of the form 001 100 110 011 111 and the
a ford ranger with a mass of 2410 kg is traveling at a velocity of 65 mph down a mount ion road in colorado the brakes
a constant-area duct is fed by a converging-only nozzle the nozzle receives air from a large chamber at p1600 kpa and
a cylinder-piston assembly contains saturated liquid h20 at 500f the piston is 1 inch from the bottom of the cylinder
1 mole of cr is added to a large quantity of cr-fe melt solution the temperature of the solid and the melt is 1600degc
a roller coaster and its occupantrsquos have a combined mass of 800 kg at a height of 70 m the roller coaster has
a bead of mass m slides without friction along a wire which has the shape of a parabola my ax2 with its axis vertical
saturated liquid steam at 2 mpa steadily enters a valve where it is throttled to 03 mpa the inlet and outlet diameter
a heat engine operates between reservoirs at 1000 and 300 k some of the power output from the heat engine drives a
a thermodynamic cycle operates between hot and cold reservoirs at 1120 k and 540 k respectively while receiving energy
steam expands isentropic ally through a turbine from 6mpa and 600c to 9593 kpa write mass energy and entropy balances
getting heat from a hot source that is 100 kpa steams going from saturated vapor to a saturated liquid 1mw of power is
a refrigeration cycle maintains a clean room at 68o f by removing energy entering the room by heat transfer at the rate
the thermal efficiency of reversible power cycle operating between hot and cold reservoirs is 38 evaluate the cop of a
a power cycle receives 1120 btu by heat transfer from a reservoir at 1080o f and discharges energy by heat transfer to
the microstructure of a copper-silver alloy at 775degc 1425degf consists of primary and eutectic structures if the mass
a 74 wt ni-26 wt cu alloy is heated to a temperature within the liquid phase region if the composition of the phase
which of the following variables does not determine the microstructure of an alloya solubility limitb eutectic pointc
carbon dioxide gas co2 at a pressure of 15 psia and 90 degrees f determine the unknown properties of the perfect gas
calculate the enthalpy and entropy of saturated steam vapor at 594 k using compresibility table assume an ideal
a hypersonic gun tunnel is used to generate short-duration high-speed flows and typically consists of two cylindrical
a long copper wire 08 cm in diameter is suddenly exposed to an air stream at a temperature of t 37degc the thermal
a piston cylinder holds air at 80 f and 15 psi during an adiabatic process the pressure is increased to 165 psi and the