A silver bar 0.125 meter long is subjected to a temperature change from 200 degress celsius, to 100 degress celsius. What will be the length of the bar after the temperature change?

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Have a look here for the theory : Thermal expansion - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Thermal_expansion)
Look here for the answer : Lycos iQ | Homepage (http://iq.lycos.co.uk/qa/show/46190/A+silver+bar+0.125+meter+long+is+subjected+to+a+te mperature+change+from200+degree+C+to+100+degree+C. +What+will+be+the+length+of+the+bar+after+the+temp erature+change%3F/)
Keep in mind that expansion calculations are based on degrees Kelvin - Not Celsius!