78.9grams of hot copper metal was dropped into a calorimeter that contained 112 grams of
water at(13°C. If the final temperature of the copper and water is 27.6°C, what is the initial
temperature of the copper?

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost