only two real posts on the last 3 pages, 4 if you included my two (made after counting btw). This is not good for you guys and detracts from the forum appeal. it also takes a lot of energy and time which is wasted on many anonymous post. The sign up is so easy that anonymous posting is not required imo.
I set the ruler to 50cm, and found that the ruler grew 0.10725 (please check), then I found the ratio which was (ruler final by ruler initial) 1.002145 (please check I'm sure this is way to big of a number to be acurate), then I got stuck to calculate the rods actual growth and solve for the materials co-eficient of thermal expansion. Please assist me.