[SOLVED] Temperature Question (answ=neg#-???) 1. The problem statement, all variables and given/known data A .03kg piece of iron is heated to 100 degrees celsius and then dropped into cool water where the iron's temperature drops to 30 degrees celsuis. How many joules does it lose to the water?(Specific Heat Capacity of Iron=450J) 2. Relevant equations change-in-energy=(SHC)(m)(Tf-Ti) 3. The attempt at a solution change-in-energy=(450)(.03)(30-100) =-945J does it matter that my answer is a negative number?