1. The problem statement, all variables and given/known data oil w/ density of 850 kgm^3 goes through a pipe diameter 8 cm at a rate of 9.5 liters / s. what is the speed of the oil? 2. Relevant equations v_1 = (dv/dt)/a_1 = (9.5*10^-3)/(pi(.04)^2) = 1.9 m/s 3. The attempt at a solution i have the solution because this problem was given to me. I just dont understand where the 10^-3 came from and how it was derived.