Question 8.3

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Manasvi Paudel 1A
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Joined: Sat Jul 22, 2017 3:00 am

Question 8.3

Postby Manasvi Paudel 1A » Fri Jan 12, 2018 2:23 pm

hey guys !

for question 8.3, how do we know that delta V is pi*r^2*d? is it just because we're assuming the bicycle pump is a cylinder ?

Sarah Rutzick 1L
Posts: 50
Joined: Tue Oct 10, 2017 7:13 am

Re: Question 8.3

Postby Sarah Rutzick 1L » Fri Jan 12, 2018 2:40 pm

Yes, since the equation to find work is w=-PdeltaV, we know we need to use the volume of the pump which we can assume to be a cylinder. The equation we use for volume would vary by problem and the container we're working with.

Katie Lam 1B
Posts: 52
Joined: Fri Sep 29, 2017 7:06 am

Re: Question 8.3

Postby Katie Lam 1B » Fri Jan 12, 2018 2:55 pm

Since the question noted that there was an inner diameter, you can assume that it is referring to a cylinder.

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