posted by Lina .
A steel beam is used in the construction of a skyscraper. By what fraction (change in L)/(Lo) does the length of the beam increase when the temperature changes from that on a cold winter day (-15 F) to that on a summer day (+105 F)?
Can anyone please give me some hints to do it?THANKS A LOT!
- physics - DrBob222
but i got .00144 for the answer...
the correct answer should be 8.0*10^-4
L/Lo = (12*10^-6)(66.66)