In the heterogeneous system shown below, 1-D groundwater flow is perpendicular to a layers of varying hydraulic conductivity a) The flow across the system (q) is 1 m/ day. Using Darcys Law, find the change in head (Ah) across each layer. What is the total change in headacross the entire system? b) Find the effective hydraulic conductivity (Kenfor an equivalent homogeneous system, that is, a system with the same total gradient (from part a) and flow rate as the heterogeneous system. Ab As Ah, K-20 w/day; K2=5 mlday; K3 = 10 m/ day be 10 n;br = 20 ; by = 30 n c) Following the same procedures, you used in parts (a) and (b) write a general expression for Kef for a heterogeneous system with i= 1,2, ..., m layers of thickness bi and with hydraulic conductivity Ki.