You plan to number each account in your Chart of Accounts. You want to have major categories and 2 levels of sub-categories. Each level of category will be represented by a digit. You want to have room in your numbering for at least ten accounts within the lowest level of sub-categories. How many digits do you need in your account numbers?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.