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one atmospheric air stream at 15 c and 30 percent relative humidity is mixednadiabatically with another air stream at 30c and 70 percent relative humidity in a steady flow process if the mass flow rate of the dry air in the hot stream is twice that of the colder stream determine the final maxture dry bulb temperature and its relative humidity
A 500 lb flywheel is shown. A 100 lb block is held by a light cable wrapped around the hub of the flywheel the radius of which is 2 ft. If the system is released from rest and the weight has a velocity of 11 ft/sec after 5 s
determin the force in memebers de, hg and he of the trees and state if the members are in comperhemsion
A tire carries a 5,000-lb load and has a pressure of 100 psi. The pavement has a modulus of elasticity of 43,500 psi. A deflection of 0.016 inches is observed at a point on the pavement surface 0.8 inches away from the tire load.
Assume that the width of the intersection in 24 ft and the car is 20 ft long. If the driver's perception-reaction time is 0.75 seconds, determine if he can clear the intersection safely for the following conditions
A radar device is installed at a location on the roadside to measure instantaneous speeds of vehicles passing that location. The initial four vehicles' speeds are listed. Calculate the space-mean speed of these four vehicles.
A total of 13,610 kg/h of air at 1 atm abs pressure and 15.6C is to be heated by passing over a bank of tubes in which steam at 100C is condensing. The tubes are 12.7mm OD, 0.61 m long, and arranged in-line in a square pattern with Sp=Sn= 19.05mm.
determine the total dead load, per foot of length, each beam must support.
Ball A is thrown vertically upward from the top of a 30-m-high building with an initial velocity of 5 m/s. At the same instant another ball B is thrown upward from the ground with an initial velocity of 20 m/s. Determine the height from the ground..
The potential energy function of the missile, once it enters the force field, is given by U(x)= 2640(x-76.3)^2 + 1350. what is the force of the force field at x= 40.2 m. How close will the missile get to the spaceship before stopping
An industrial off gas steam must be treated for both particulates and SOx. The gas is at 1500 degrees F and 1.5 atm of pressure containing 80 mg/cubis meter of particulates and 25 mg/cubic meter of SOx.
A rotating shaft with an applied torque of 400 Newton-meters is held in place (stopped) by a shaft key. The diameter of the shaft is 15 centimeters. The shaft key has a length of 20 cm, and is square, with its width and height being 5 cm.
How much (in addition to your trade-in value) can you afford to spend for a car averaging 30 mpg You expect to drive 15,000 mile/year and expect gasoline to cost $4.00/gallon and you will keep he car 10 years. Your personal interest rate is 6%/yea..
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