I have these problems about Fluids that I really need help with. Can you please tell me how to get started with these problems. Thanks alot!(adsbygoogle = window.adsbygoogle || []).push({});

1) When u ascend or descend a great deal when driving in a car, your ears "pop," which means that the pressure behind the eardrum is being equalized to that outside. If this didn't happen, what would be the approximate force on an eardrum of area 0.50cm^2 if a change in altitude of 950m takes place?

What I did was: Pressure= (density)(g)(height) Then (Pressure)(Area)= Force

Is that right?

I got .600045 for the force... which seems... wrong.

2) During each heartbeat, approximately 70cm^3 of blood is pushed from the heart at an average pressure of 105 mm-Hg. Calculate the power output of the heart, in watts, assuming 70 beats per minute.

for this one... i'm not sure of what to do... so plz help. thanks

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# Homework Help: Ears popping when ascending or descending

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