It’s assumed that a graphite-epoxy reinforced plastic with longitudinal fibers contains 25% graphite fibers (i. e. volume or area fraction). the elastic modulus of the fibers is 400gpa, and that of the epoxy matrix is 150 gpa. (a) calculate the elastic modulus of the composite and fraction of the load supported by the fibers. (b) calculate also the stresses in the fibers and in the matrix if the cross-sectional area and load of the composite are ac = 0.3 in2 and pc = 600 lb.

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Give an example in which the electrical energy changes to light energy