Aswine 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.

option number c is the right answer.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the answer is 12 as i may remember

: )

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: