An engineer works for a company that has many gray cast iron rods of different diameters and would like to design an equivalent rod that could handle a force of P = 28.0 kip without fracturing. What is the minimum diameter that this new rod must have to support P? Express your answer to three significant figures and include the appropriate units.

During this chemical reaction energy is released. in the chemistry lab, this would be indicated by an increase in temperature or, if the reaction took place in a test tube, the test tube would feel warmer to the touch. reactions like this release energy because a) the reaction requires activation energy. b) the reactants have less potential energy than the products. c) the reactants have more potential energy than the products. d) the mass of the products is greater than the mass of the reactants.