Homework Help: physics

Posted by charlie on Saturday, January 8, 2011 at 11:59am.

calculate the amount of heat energy required to raise the temperature of a 5kg block of solid platinum from 0 degrees celsius to 25 degrees celsius. the specific heat of platinum is 133j/kg k. how much heat energy is required to raise 5kg of water by the same amount? the specific heat of water is 4.2kk/kg k

physics - drwls, Saturday, January 8, 2011 at 2:06pm
Heat energy required = Q
= (Mass)*(Specific Heat)*(Temperature rise)

It is often written M*C*(delta T)

For platinum, the answer is 5*25*133 = 17,000 J (rounded to two significant figures)

Now do water.
physics - Berry, Saturday, February 26, 2011 at 2:23am
525

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