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Water enters a condenser at a pressure of 200 kPa and a quality of 0.95. The pressure drops by 25 kPa across the condenser as heat is extracted to a 30%u2070C thermal reservoir. If the water exits as a saturate liquid, determine a) the change in specific entropy of the water, b) the change in specific entropy of the reservoir, and c) the entropy production per unit mass of the entire process.
the rotor shaft of a helicopter drivesd the rotor blades that provide the lifting force and is subjected to a
Determining the largest couple that can be applied to a beam in pure bending. A beam of cross section shown is extruded from an aluminum alloy for which σy = 310 MPa and σu = 480 MPa.
the compression stages in the axial compressor of the industrial gas turbine are close coupled making intercooling very
a light globe dissipates 200w as heat. it is exposed to a light breeze of air at 20c which results in a convective heat
in the design of an automobile radiator an engineer has a choice of using either a brass-copper alloy casting or a
A glass/epoxy laminate with a fiber orientation of 30 degrees is subjected to a shear stress t_xy (or tau_xy) which can be positive or negative.
Refrigerant 134a at 700 kPa and 40oC is expanded adiabatically in a closed system to 60 kPa. Determine the work produced, in kJ/kg, and final enthalpy for an isentropic expansion efficiency of 80.
a can of juice consists of .06 kg of aluminum and .355 liters of liquid. consider the contents to be saturated liquid
a projectile is launched with a speed v0 27.0 ms from the floor of a 4.3-m-high tunnel as shown. determine the maximum
the acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of
a turbojet aircraft is flying with a velocity of 320 ms at an altitude of 9150 m where the ambient conditions are 32
briefly explain why porosity decreases the thermal conductivity of ceramic and polymeric materials rendering them more
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