. When air blows past a chimney the speed of the air increases as it goes over t

Question

. When air blows past a chimney the speed of the air increases as it goes over the top of the chimney. What effect does this have on the air pressure just above the chimney?
a. the air pressure above the chimney is decreased
b. the air pressure above the chimney is increased
c. the air pressure above the chimney will either increase or decrease, depending on the size of the chimney
d. the air pressure above the chimney is unaffected
e. the speed of the air is needed to determine its effect on the air pressure

Explanation / Answer

From Bernoulli's equation as the velocity increases pressure decreases so option a is correct choice

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