[color=#1551b5][b] - GOING FURTHER -[br][br]Yet another characteristic quantity for automobiles comes from the fact [br]burning a gallon of gasoline produces about 20 lbs. of carbon dioxide.[br][[i]How can that be?[/i]][br][br]Consider now the following [i][b]five[/b][/i] characteristic quantities[br] - average speed in mi/hr [br] - average fuel efficiency in mi/gal[br] - average fuel cost in $/gal[br] - average weight of fuel (specific gravity) in lb/gal[br] - average weight of carbon dioxide produced per gallon of fuel burned in lb/gal[br][br]How many additional distinct characteristic intensive quantities can you formulate?[br][br]What are they? What are their values?[br][br]To what questions are each of these additional quantities a potential answer?[/b][/color]