3. Compare the result of problem 1 with the following:

The cylinder has the mass input of 2.0 gm CO₂ added over a width of 5 cm (not at a point).

Compare the results of this solution to Problem 1 for part (iii) for a D=1 cm²/s.

First you must derive the solution using superposition (see similar derivation in the lecture

notes). [5 pts]