Friday, April 20, 2012

HW for this week... finish problem sheet!

There is a worksheet with ten specific heat capacity' related problems on it that you received in class. If you somehow didn't ge tit, you can find it [HERE]. We've worked on it in class one day and most of you have had a second day to work on it. Since I have not assigned any other homework this week, I am assigning the completion of these ten problems as HW.

As usual, we will check the worksheet as homework (meaning, we'll go over the solutions and you'll have the opportunity to grade your work) on Monday. Recall that the four equations were:

Energy: q = m * Cg * (Tf - Ti)
mass: m = q / (Cg * [Tf - Ti])
specific heat capacity: Cg = q / (m * [Tf-Ti])
final temperature: Tf = q / (m * Cg) + Ti

For each of the ten problems, you will need to select the correct equation to use, and then plug in all the known quantities to solve the problems. Be sure when you are getting your final answer, to simplify what is inside parentheses and what is at the bottom of a fraction FIRST, before doing other calculations.