Originally Posted by
Unknown008
Hi Red and J-Lo! :)
Hello again Steve!
I had no problem with the gravity questions, but with the Hooke's Law chapter, which is on elastics, springs, etc. There was a graph of strain against stress, and I forgot what the area under the curve was. I missed another one, about finding the root mean square speed of four molecules, I was getting 147.3 and there were none in the answers. Later, I realised that all the values given were to 2 significant figures, and so was the answer, 150. And, of course, many more.