The main uptake air duct of a forced air gas heater is 0.300 m in diameter. What is the average speed of air in the duct if it carries a volume equal to that of the house’s interior every 15 min? The inside volume of the house is equivalent to a rectangular solid 13.0 m wide by 20.0 m long by 2.75 m high.

Step 1 of 4</p>

This question is based on the concept of volume flow rate equation , where volume flow rate, area of cross-section and velocity of the fluid at that cross-section. We are first required to calculate the volume flow rate of air and then using , we can calculate the velocity.

Step 2 of 4</p>

The inside volume of the house,

m3

m3

Time min

s

s

Therefore, the volume flow rate,

m3/s

m3/s