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Air undergoes a polytropic expansion from 2500 R to 1500R. The final pressure of the air is 20 psia and n for the process is 1.32. Determine the work output per pound mass of air.
How much energy, in kj/kg must be added to obtain 600 degree Celsius at the exit if the pressure remains constant?
How much heat in kj, must be added to a rigid volume, containing 2 kg of water/ Vapor mixture with x =0.5 to increase the temperature from 200 degree Celsius to 500 degree Celsius?
A 3 kg particle is moving in the vertical y-direction with a velocity of 4 m/s when acted upon by a resultant force Fy=(5+2t^2) N where t is the time of application in seconds.
Determine the angular velocity of the bar and the velocity at point A point A is on top with a 30 deg angle the slope is 105 deg from the vertical wall.
Calculate the force exerted by the ready-mix concrete on each form. Determine the line of application of the force
Estimate the sedimentation rates (terminal velocities) of human red blood cells (RBC) in dispersed in normal saline and in a 10,000 g field.
Air is expanded in an adiabatic turbine from an inlet state of 1800 kPa and 300oC to an outlet pressure of 200 kPa. what is the outlet temperature of the air?
A beam has a solid square cross section of 100 mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam.
What is the Ymax, total distance traveled and the time at ymax and time at the total distance traveled(x distance)?
Determine the heat transfer coefficient on the surface of the sphere, i.e. h. Is the assumption of a lumped mass justified?
What is the rate at which energy is emitted by the surface via radiation? What is the net rate at which radiation is exchanged between the surface and the chamber walls?
The air temperature is 20 C and the heat transfer coefficient in the air is only 50 W/(m 2 - m). What is the surface temperature of the heater in this case?
Determine the heat flux from the room into the refrigerator if the convection coefficients are h = 5 W/(m 2 -K) on both the interior and external surfaces of the sheet metal panels.
The air is supplied to the burner at 600 K. The gaseous products of complete combustion leave the burner at 1100K. Determine the required heat transfer in kJ/kmole of fuel.
Compute the number of free electrons per cubic meter for silver at room temperature. Compute the number of free electrons per silver atom.
If a section of concrete is poured for a road and the engineer leaves no gap between sections poured before and after the section, what will happen to the concrete if the temperature varies from 0 C
Two clockwise rotating point vertices of strength 8 ft^2/s are located at (0,0) and (0,3) at a given instant (a) find their location after 1.0 s (b) if the sense of the vortex at the origin is reve
Assuming both air flows to be steady, inviscid and incompressible, and neglecting body forces and weight of the cylinder, determine the magnitude and direction of the net force acting on the cylinde
Determine the location of the stagnation point xo as a fucntion of V and m. (b) Determine the static pressure variation along the wall as function of x (c) sketch the resultant pressure distribution
If the coefficient of friction is 0.3, how long does it take the blocks to come to rest? what is the maximum velocity of B? A's mass of 50 kg and B mass of 30kg.
It is then machined down to a 80mm diameter determined the difference in angular momentum. Assume the wood weighs .00084 kg/cm3.
A pulp and paper machine has a roller that has a mass of 400 kg and a mass moment of inertia about its center of rotation of 30kgm2.
A spring is initially compressed 50 mm by a force, P. if P is increased by 250 N thereby causing a total spring compression of 150 mm what is the spring constant.
A torque of 40Nm is applied to a 100 kg armature of an electric generator for 3 seconds. If the speed increase is 400rpm determine the radius of gyration of the armature.