Answer:
a
Explanation:
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Answer:
i think its A. increasing research to find alternative natural resources for the future
Answer:
Explanation:
https://www.pole-barn.info/roof-rafter-calculations.html
Answer:
a) The flow capacity of the fan is 3150 L/min
d) the minimum diameter is 0.11 m
Explanation:
given data:
A = area of residence = 200 m²
h = height of building = 2.7 m
Percentage of air that must be replaced by fresh air is 35%
v = velocity of air in the duct = 5.5 m/s
a) The volume of the entire building is:

The flow capacity of the fan is equal to:


b) The volume flow rate of fresh air is equal to:
