Suppose the axial member has a circular cross section with a diameter of db = 10 cm at section b and a diameter of dd = 5 cm at section d. what is the average normal stress in the section with the maximum magnitude stress? express your answer to three significant figures with the appropriate units.

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)