Question: A hot air home heating system takes 500 ft3/min (cfm) air at 14.7 psia, 65 F into a furnace and heats it to 130 F

A hot air home heating system takes 500 ft3/min (cfm) air at 14.7 psia, 65 F into a furnace and heats it to 130 F and delivers the flow to a square duct 0.5 ft by 0.5 ft at 15 psia. What is the velocity in the duct?

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