The thermal coefficient of linear expansion labo 5. if flat strips of iron and brass were bonded together and this bimetallic strip were heated. what would be observed? justify your answer, and draw a sketch of the situation. (hin: see appendix a. table a3, for a's.) 6. a pyrex graduated cylinder has a volume of exactly 200 ml at 0 °c. if its temperature is increased to 100 c, will its volume increase or decrease? compute the change in volume. 7. assume a metal rod with an initial length l, is heated through a temperature increase of at to a length ly and then cooled to its initial temperature-that is, through a temperature decrease of-δ t (same δ t increase and decrease). call the final length of the rod l2 after this thermal cycle. (a) show that eq. 19.3 implies that l.-l, [i-(adn2], that is、g+ 4 (b) what is the implication if the rod were taken through a number of such thermal cycles?