A steel beam has a length of 2.30 m, a width of 10.0 cm, and a height of 7.0 cm at a temperature of 20.0 ^oF.  You wish to attach the centers of  several beams to the roadway with the beams forming a straight line end-to-end.  You wish to space the beams in such a way that they will not butt up against one another even when the temperature reaches as  high as 120.0 ^oF.  (a) What minimum spacing should you have between the centers of the beams if this is to be true?  (b) What is the change in volume of a beam if the temperature changes  as indicated above?

Answers: (a) 2.3014 m   (b) 29 cm³