1.A sample of undisturbed soil has a dry weight of 10 lb and volumen of 1 ft^3. If the specific gravity of the soil solids is 2.65, determine the void ratio and the porosity.
2.How does the engineering classification of soils differ from he engineering classification of rocks ?
3.to apply shock loading to an artillery shell, a 20kg pendulum A is released from a know height and strikes impactor B at a known velocity v (theta). impactor B then strikes the 1 kg artillery shell C. knowing the coefficient of restitution between all objects is e, determine the mass of B to maximize the impulse applied to the artillery shell c.