James, Deborah, and Logan each purchase a cup of coffee. Each cup contains 350 grams of coffee at 95 C. The specific heat of coffee is 4.2 J/(g.C). The cups are well insulated so that no energy is transferred between the coffee and the cup. (a 10pts) James prefers to drink his coffee at 82 C. Cream has a specific heat of 3.8 J/(g-C) and an initial temperature of 5 C. How many grams of cream should he add to bring his coffee to the desired temperature? (b 10pts) Deborah likes to add sugar to her coffee. Sugar has a specific heat of 1.2 J/(g.C) and an initial temperature of 20 C. Deborah adds 16 grams of sugar to her coffee and stirs. By stirring the coffee, Deborah is doing 25 J of work on her coffee. What is the final temperature of the coffee after the liquid comes to rest?