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Physics 211

Name

Third Hour Exam

The paper portion.

Computer Intensive Physics

Spring, 1998

4/16/98

Total points 40 points

1. (6 pts.) A 0.0500 kg ingot of metal is heated to 200 C and then dropped onto a beaker containing 0.400 kg of water initially at 20 C. If the final equilibrium temperature of the mixed system is 22.4 C:

a) (3 pts)compute the specific heat of the metal.

b) (3 pts) compute the total thermal energy transferred to the water from the ingot.

2. (3 pts) A physics 211 student has a volume of 500 cc of water at 20 C. She adds some hot water with a temperature of 92 C. She measures the final temperature of the mixture to be 32 C. How much hot water did she add? Support your answer by showing your work.

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