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Determine the irreversibility produced when 3.00 lbm of carbon dioxide at 70.0°F and 30.0 psia are adiabatically mixed with 7.00 lbm of carbon dioxide at 100.°F and 15.0 psia. The final mixture pressure is 17.0 psia.
Assume the carbon dioxide behaves as a constant specific heat ideal gas and that the local environment is at 14.7 psia and 70.0°F.
Two samples of different pure substances having equal mass are each placed in rigid containers. The first container is half as large as the second container. After the containers are sealed, the pressure of the first container is observed to be twice..
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
air at 101 kpa and 21 degree c dry bulb and 60 percent relative humidity enters an industrial dryer and is discharged
standards for firewalls may be based on their thermal response to a prescribed radiant heat flux. consider a
At the proportional limit, a 30 mm wide × 12 mm thick bar elongates 2.0 mm under an axial load of 41.5 kN. The bar is 1.5-m long. If Poisson’s ratio (ratio between longitudinal and lateral deformations) is 0.33 for the material, determine:
a downward force of 98 n acts on the free end of the illustrated pulley. ma 47 kg what is block as acceleration?
a circular fin of uniform cross section with diameter of 10mm and length of 50mm is attached to a wall with surface
a horizontal pipe has an abrupt expansion from d1 8 cm to d2 16 cm. the water velocity in thenbspsmaller pipe is 15
Design a private sewage system (seepage pits) for the apartment building in Appendix B. In this design, use a percolation rate of 16 min. Assume the maximum water table elevation is 2 ft (0.6 m) below grade.
when the rope is at an angle of a 20? the 0.5 kg sphere a has a speed v0 1.2 ms. the coefficient of restitution
A torque wrench is used on a 3/4-10 UNC bolt in an automobile final assembly plant. A torque of 70 ft-lb is generated by the wrench. If the torque coefficient= 0.17, determine the tensile stress in the bolt.
a house has a winter heating requirement of 30 kjs and a summer cooling requirement of 60 kjs. consider a heat-pump
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