1At what temperature of 0^C steel rod copper rod have length of 800.1cm and 99.9cm respectively. At what temperature will the 2 rods have the same length. Coefficients of linear expansion (per °C) copper rod----.000017 steel rod-------.0000122.The length of a brass bar increase from 4.001m into 4.0030 m. find the final temperature of the bar if the initial temperature was 0 Celsius. Coefficients of linear expansion (per °C) brass----- .000019
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1. I think there is typing error in writing the length of steel rod I correct it and consider100.1 in stead 0f 800.1. Let the required temperature be t degree Celsius We have 100.1*[1+ 0.000012*t] 99.9[1+0.000017*t] or 0.0004971*t 0.2 or t 402 .3 degree Celsius 2.Let final temperature be t. we have 4.0030 4.001 + 4.001*0.000019*t or 0.000076019*t 0.002 or t 26.31 degree Celsius
