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Exercise 8.7

Posted: Thu Jan 18, 2018 2:27 pm
by Kellina Tran 2I
Why is it that the answer is written as +4.90 x 10^2 J instead of kept as 490 J?

Re: Exercise 8.7

Posted: Thu Jan 18, 2018 2:42 pm
by Hyein Cha 2I
it's just to keep track of sig figs. You do not need to write it in scientific notation :)

Re: Exercise 8.7

Posted: Sun Jan 21, 2018 2:42 am
by Katelyn 2E
My TA said that sig figs aren't as big a deal this quarter because students end up focusing more on worrying about sig figs than they do about getting the actual concepts down/the problems right. But yes, answer is written in scientific notation just for the purpose of sig figs.