Question
In: Physics
You have a (copper) rod that is 702 mm at 20 C, you also have an...
You have a (copper) rod that is 702 mm at 20 C, you also have an aluminum rod that has a length of 700 mm. When the rods are the same length, what is the temperature?
Solutions
Expert Solution
Consider the Copper rod
Original length(at 
), 
Initial temperature, 
Thermal expansion coefficient, 
Let 
be the final temperature where the length of the rods becomes
equal.
Use formula 
----------(1)
===========================================================
Consider the Aluminum rod
Original length(at
), 
Initial temperature,
Thermal expansion coefficient, 
Let
be the final temperature where the length of the rods becomes
equal.
Use formula
----------(2)
==================================================
From (1) and (2)
702-700=2
Rearrange the terms.
ANSWER: 
========================
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