Physics

A brass measuring tape is correct at 20 degree Celsius. The value obtained when the length of a field is measured with the rule at 50 degree Celsius appears to be 70.5m. what is the true length of the field Linear expansivity of brass =1.8 ×10 raise to power minus five per Kelvin.

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  1. deltaL= L (1+alpha*30)
    70.5-L=L(1+alpha*30)
    solve for L

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    bobpursley
  2. Pls help me do it for me

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  3. help me solve the question

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  4. Solve the questions

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  5. Please answer

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  6. Good answer, that's nice and correct

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  7. L²=L¹(1+a[∅]) FORMULA
    70.5(1+1.8×10^-5[20-60])=70.46m

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