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thatdudeuknow
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Problem: The brass bar and the aluminum bar are each attached to an immovable wall. At 21.8 °C the air gap between the rods is 1.33 x 10-3 m. At what temperature will the gap be closed? length of brass is 2.0 meters, aluminum is 1.o meters
Why my solution isn't working I'm not entirely sure, but I feel it may simply be errors in my calculus.
The attempt at a solution
aAlum= 23E-6 aBrass=19E-6
23E-6(1.0)chngT+19E-6(2.0)chngT=1.33E-3m
chngT(23E-6(1.0)+19E-6(2.0))=1.33E-3m
chngT=1.33E-3m/((23E-6(1.0)+19E-6(2.0))
chngT=20.78125
21.80+20.78125=42.58125C
Why my solution isn't working I'm not entirely sure, but I feel it may simply be errors in my calculus.
The attempt at a solution
aAlum= 23E-6 aBrass=19E-6
23E-6(1.0)chngT+19E-6(2.0)chngT=1.33E-3m
chngT(23E-6(1.0)+19E-6(2.0))=1.33E-3m
chngT=1.33E-3m/((23E-6(1.0)+19E-6(2.0))
chngT=20.78125
21.80+20.78125=42.58125C