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nickb145
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Homework Statement
A 61.00m long steel measuring tape is calibrated for use at 20.0∘C. How long is this tape under the following conditions:
a hot day with 38∘C?
Express your answer using four decimal places and include the appropriate units.
i've been losing my mind over this, i swear I'm doing it correctly.
Homework Equations
ΔL/L=αΔT
The Attempt at a Solution
(38-20)=18°C
(61m)(1.2*10-5)(18)= .01317m
Mastering physics keeps telling me that I'm inncorrrect , I swear I'm doing it how the book wants me to do it.