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When you stifle a sneeze, you can damage delicate tissuesbecause the pressure of the air that is not allowed to escape mayrise by up to 45 {\rm kPa}.

If this extra pressure acts on the inside ofyour 8.4-mm-diameter eardrum, what is the outward force?
answer in N's

User Aaron Reba
by
3.9k points

1 Answer

3 votes

Answer:

2.49379624842 N

Step-by-step explanation:

P = Pressure = 45 kPa

d = Diameter of eardrum = 8.44 mm

A = Area =
\pi(d^2)/(4)

F = Force

Pressure is given by


P=(F)/(A)


\Rightarrow F=PA


\Rightarrow F=45000* \pi((8.4* 10^(-3))^2)/(4)


\Rightarrow F=2.49379624842\ N

The outward force is 2.49379624842 N

User Yemisi
by
4.3k points