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October 25, 2014

Homework Help: Physics Please someone help please

Posted by Akbar on Thursday, April 26, 2012 at 6:37pm.

A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to equilibrium, the thermometer reads 38.7°C. What was the original temperature of the water?

-.135(4186)(Tf-38.7)=.034(840)(Tf-21.6)
=-565.11Tf+21869.752=28.56Tf-616.896
solve for Tf
Tf= 37.88 degree celcius but its wrong please help!

thank you

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