- #1
olicoh
- 24
- 0
I already posted about this but I redid the problem and got another answer:
1. Homework Statement
The volume of an air mattress is 15 cubic feet. Air escapes at a rate of r(t)=0.25e^(−0.05t), where r is in cubic feet per second. Assuming the mattress is still completely inflated when the valve is opened, how much air is released in the first 30 seconds?
Here is what I have so far:
V(30) = integral[0,30] (0.25e^(-0.05t))
= [-(1/2) (e^(-1/2t))]300
= 0.499999847 cubic feet/sec
I think I did this correctly but the answer seems too small...
1. Homework Statement
The volume of an air mattress is 15 cubic feet. Air escapes at a rate of r(t)=0.25e^(−0.05t), where r is in cubic feet per second. Assuming the mattress is still completely inflated when the valve is opened, how much air is released in the first 30 seconds?
Homework Equations
Here is what I have so far:
V(30) = integral[0,30] (0.25e^(-0.05t))
= [-(1/2) (e^(-1/2t))]300
The Attempt at a Solution
= 0.499999847 cubic feet/sec
I think I did this correctly but the answer seems too small...