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1750g of air performs an expansion work of 3100kJ on the surrounding as it expands horizontally to a pressure of 63000 kPa and a volume of 0.065 cubic meters. Find the temperature of air and its initial volume
a water stream is heated in fully developed flow through a pipe with uniform heat flux at the wall. the flow rate is
the top surface of an l 5-mm-thick anodized aluminum plate is irradiated with g 1000 wm2 while being simultaneously
a well-insulated rigid tank contains 2 kg of a saturated liquid-vapor mixture of water at 100 kpa. initially
a coating that is known to behave as a bingham plastic is being applied to a vertical surface. derive a relationship
Consider a car having a frontal are of 2.0m^2 with a drag coefficient of 0.35. The mass of the car is 1250kg and the rolling resistance is 1.0% of the weight of the car. At what speed does the aerodynamic drag first exceed the rolling resistance.
A tank of CO2 has a volume of 0.15 m^3, contains 0.8 kg of CO2 at a pressure of 453.4 kPa. 10% percent of the mass is removed in such a way that the pressure falls to 371.8 kPa. Determine the internal energy change for this process.
a computer consists of an array of five printed circuit boards pcbs each dissipating pb 20w of power. cooling of the
two meshing helical gears have a 25 degree transverse pressure angle and a 20 degree normal pressure angle. the gears
a piston cylinder device having an initial volume of 2 m3 initially contains steam at 10 bars and 200oc state 1. the
consider a 77.0-kg man standing on a spring scale in an elevator. starting from rest the elevator ascends attaining its
during a solar eclipse the moon earth and sun all lie on the same line with the moon between the earth and the sun.a
a tank contains 1 m3 air at 100 kpa 300 k. a pipe flowing air at 1000 kpa 300 k is connected to the tank and it is
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