2
votes
1answer
59 views

changing of the derivative function

My question deals with the continuity equation and the changing of the derivative function. The continuity equation for one-dimensional flow requires that $$ \frac{\partial(\rho v)}{\partial x} = - ...
1
vote
1answer
399 views

Mixture problem? Repeatedly extract/replace X units of fluid (with fluid #2) to attain X% mixture ratio?

Let's say I have a 100 liter container of water. I extract 10 liters of water, and replace it with 10 liters of juice. Now, the container is now 10% juice / 90% water. I can keep repeating this to ...