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April 27, 2015

Homework Help: physics

Posted by Akbar on Tuesday, April 24, 2012 at 6:58pm.

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


I need help on this please could someone please help out.Thank you!

Physics - bobpursley, Tuesday, April 24, 2012 at 5:53pm

the sum of heats gained is zero.

massglass*specheatglass*(21.6-38.7)+135*specheatwater*(Ti-38.6)=0

solve for Ti

Physics - Akbar, Tuesday, April 24, 2012 at 6:58pm

I got 15.43 degree Celsius but its wrong. I don't know why please help. Thank you!

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