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A swine nursery building is being designed to hold 300 pigs weighing 50 pounds each. Water vapor production in the building (from animal respiration and evaporation from wet surfaces) is expected to be 40.2 lbs H2O/hr. Outside air at 30 degrees F dry bulb and 50% RH is to be blown through a fan into the building. The air inside the building is to be at 65 degrees F dry bulb and 70% RH. Find: A) Volumetric flow rate (cfm) of air that the fan should move to remove moisture from the building, and B) The rate at which heat (BTU/hr) will be removed from the building in the ventilation air.
Flow Rate = ______cfm
Heat Removal Rate = __________ Btu/hr
a student is performing an experiment with two identical small metal balls a and b.initially ball a contains 6.0-?c net
suppose there is significant air resistance in addition to the spring force acting on the mass as it oscillates up and down. how will the elastic potential energy change
The vibrational energy levels of an HBr molecule are EK = C (K + ½), where C = 5 · 10–20 Joules and K = 0, 1, 2,… Each level is singly degenerate: gK = 1. Consider four HBr molecules trapped in a solid matrix such that they are able to undergo vib..
A brass cube 7.0cm on each side is placed in a pressure chamber and subjected to a pressure of 1.4 x 107 N/m2 on all of its surfaces. By how much will each side be compressed under this pressure?
An electric field of 12.6 N/C directed due north is superposed on an existing electric field of 16.1 N/C directed due east. What is the magnitude of the resultant field
Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be quite high-many times higher than the wind speed.
The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (see the drawing). Suppose that you lob the ball with an initial speed of 17...
the wavelength of a 63.7-mhz electromagnetic wave is approximatelya. 1.0 mb. 7.4 cmc. 27 md. 4.7
34g of copper pellets are removed from a 300 degrees celcius oven and immediately dropped into 70mL of water at 22 degrees celcius in an insulated cup. What will the new water temperature be
A spring-loaded pellet gun is designed to fire 3.40 g projectiles horizontally at a speed of37.2 m/s. What maximum force is required to load the gun
A coffee drinker is faced with the subsequent dilemma. She is not going to drink her hot coffee with cream for ten minutes, however wants it to still be as hot as possible.
In a certain material, light travels at a speed of 2.00 x10 8 m/s. If the reflected light is polarized, what is the angle of A) reflection, B) refraction and C) incidence? Suppose the incoming ray is in air.
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