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January 30, 2015

January 30, 2015

Posted by **Kathryn** on Monday, December 10, 2012 at 10:11am.

Be mindful of significant figure rules for both multiplication and addition

- Physicis -
**Damon**, Monday, December 10, 2012 at 10:48ammelting point of copper = 1083.0 °C

heat capacity of copper = .39 kJ/kg-K

heat of fusion of copper = 207 kJ/kg

so to warm it up

Qin = .39 kJ/kgK(1083-83)K(3kg) = 1170 kJ

then to melt it

Qin = 207kJ/kg (3 kg) = 621 kJ

total Qin = 1791 kJ or 179,100 J

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