Thank you haruspex for your response,
I see what you mean. I was fixated on 1.2 kg/m3 as a constant value. Now I think about it, it is the other way around (that is the air heated inside the balloon will have the same density on whatever day since the temperature given by the fire is the...
Hi, I came across this question in a physics review pamphlet:
Homework Statement
A balloon for a county fair is designed to carry four
100-kg passengers when it is expanded to its maximum
volume. The designers assumed the balloon would
operate in ordinary spring temperatures. If, on...
I tried to solve these problems in a different way but I'm not sure if I'm on the right track.
If it revolved over the x-axis then the volume will be
integral (0,4) Pi (2)^2 - (root (x))^2 dx = 42.265 units^3
If it revolved over the y-axis then the volume will be
integral (0,2) Pi (y)^2 - 0...
Homework Statement
Use the washer method to find the volume of hte solid generated by revolving the regions bounded by y= root(x) and the lines y =2 and x=0 about the x-axis , y-axis , y= 2 and x=4
Homework Equations
V= Pi integral (0,4) (R(x)^2 - r(x)^2) dx
The Attempt at a...