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PHYSICS

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1..........At 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-------.000012

2.....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

  • PHYSICS -

    1. You'd better check your numbers. If the copper rod starts out 8 times longer, no amount of heating (or cooling) is going to make it shorter than the steel rod.

    Is your 800.1 cm supposed to be 100.1 cm?

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