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?

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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genius_generous answered 1 year ago

A copper rod is sliding on two conducting rails that make an angle of 20

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