Heat extraction from evaporator

Heat extraction from evaporator. See attached file for full problem description.

Screw and wedge lifting a block

I need to calculate the moment that must be applied along the axis of the screw to move the wedge and lift the block. See attached file for full problem description.

Find the mass moment of inertia

Find the mass moment of inertia of a tool steel part. See attached file for full problem description.

Find horizontal and vertical area moment of inertia

Find horizontal and vertical area moment of inertia of cross-section. See attached file for full problem description.

Statics Problem

Bar AD is supported by two steel wires and a pin at A. Determine the forces in wires BE and CF. I have attached a picture for this problem. I began this problem by making a free body diagram as shown in 2nd attached file. I assumed that the answers need to be in terms of P. That left 3 equations, 4 unknowns. The Fx equation eliminates Ax but then there are 2 equations, 3 unknowns. I was thinking that perhaps you could take moments about 3 points to have 3 equations and 3 unknowns. When I have tried this I keep getting systems of equations that don't lead to solutions. They cancel each other out. Is there anything else I can do?