Physics Help Forum heat transfer question help.

 Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

 Jan 15th 2009, 05:32 AM #1 Junior Member   Join Date: Jan 2009 Posts: 8 heat transfer question help. Hello for part a by answer was 1674.8 JK^-1 I couldn't manage to do the parts b) , c) and d). for b) i got far as q=mCw(delta T) and adding this this to q=mlf. which came down to mi(4187)(10-(-20)) + mi(3.35 x 10^5) rearranging this gave mi(125610 + 3.35 x 10^5) which doesn't come down to +mi(4.186 x 10^4) part c i did q=mCs(delta T) which came to 2(837.4)(10-35) = -41870 which is wrong as we want -1.675 x 10^4 J part d i was unsure about. could someone please help me out thanks Kind Regards Attached Thumbnails
 Jun 2nd 2009, 12:44 PM #2 Retired     Join Date: Mar 2009 Location: Online Posts: 127 Is this for a take home test?

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