1.For a groundwater hydrology problem, if you have an unconfined aquifer, and someone inserts an impermeable wall into the middle of it (a wall that starts at the bottom and does not stretch the full height of the aquifer), will the water flow up over the wall like water flows up over a rock in a stream? If not, what will the flow lines look like?
2.Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that d1=50mm (diameter of cylindrical rod AB) and d2=30mm (diameter of rod BC), find the average normal stress at the midsection of (a) rod AB, (b) rod BC.