Up: Lakes as Well-Mixed...
Previous: Question 1
Let's continue with our three question quiz now.
Click on the answer you believe is correct. If you don't
feel comfortable about which model to use, go to the section
on modeling. (You can also
refer to the previous page for a summary of
the three input function we are using.)
Question 2: A wastewater treatment plant empties its treated
water, which contains ammonia, into the nearby lake. The ammonia
concentrations are always within legal limits, but it is observed
that the greatest concentration always occurs at about 5:00 PM, while
the minimum concentration occurs at about 5:00 AM. Here,
the best choice for representing the input function for the
lake would be
- an impulse input function;
- a step input function;
- a sinusoidal input function.
John Hoggard <hoggard@math.vt.edu>
Last modified: Sun Aug 10 17:39:56 EDT 1997