Calculate the mass and bending stiffness of a cantilever sandwich beam that contains unidirectional continuous carbon fibers in an epoxy matrix in the faces and a semi-rigid foam in the core. The volume fraction of fibers in the composite is 50%. Each face thickness is 1.5 mm and the core thickness is 4 mm. The width of the beam cross-section is 50 mm, the length is 1 m, and the load acting on the beam is a vertical transverse load of 100 N located at its free end.