Exercise 7 A continuous and oriented fiber-reinforced composite with a cross-section of 970 mm² is exposed for an external tensile load. The stresses that fiber and matrix absorb are 215 MPa and 5.38 MPa, respectively, the power that the fiber is exposed to is 76800 N and the strain of the composite is 1.56 x 10^-3. Calculate the following. a) The force to which the matrix is exposed. b) The E-module of the composite along the fiber direction. c) The E-module for fiber and matrix.