Homework Help: physics

Posted by Jim on Friday, January 14, 2011 at 11:05am.

What is the final tempurature when a 3.0 kg gold bar at 99C is dropped into 0.22 kg of water at 25C Specific heat of gold is 129 j/kg x C

physics - bobpursley, Friday, January 14, 2011 at 11:55am
The sum of the heats gained is zero (something loses heat).

Heatgainedwater+heatgainedgold=0
.22*Cw*(Tf-25)+3*Cg*(Tf-99)=0
solve for Tf
physics - Shaba, Friday, January 14, 2011 at 1:47pm
A*t =v-u at=v-u add u to both side at*u=v-at

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