an unknown substance were tasted.the result are l.it conducts electricity when dissolved in water ll.it has high boiling point l
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Answer: The magnitude of the force exerted on the roof is 490522.5 N.
Explanation:
The given data is as follows.
Below the roof, = 0 m/s
At top of the roof, = 39 m/s
We assume that is the pressure at lower surface of the roof and
be the pressure at upper surface of the roof.
Now, according to Bernoulli's theorem,
=
=
= 981.045 Pa
Formula for net upward force of air exerted on the roof is as follows.
F =
=
= 490522.5 N
Therefore, we can conclude that the magnitude of the force exerted on the roof is 490522.5 N.