## Sig Figs in Problem 1.13 (6th Edition)

$c=\lambda v$

Alex Alonso - 4F
Posts: 28
Joined: Fri Sep 28, 2018 12:27 am

### Sig Figs in Problem 1.13 (6th Edition)

In this problem, there are no given sig figs other than the energy levels, which apparently don't count because the final answer for part (a) has 3 sig figs. How is it that the answer has three sig figs?

jonathanjchang2E
Posts: 61
Joined: Fri Sep 28, 2018 12:26 am

### Re: Sig Figs in Problem 1.13 (6th Edition)

The question asks to calculate the wavelength and since the majority of the wavelengths on the electromagnetic radiation spectrum range from ~300nm to ~1000nm it would only make sense for the answer to be in between those two numbers and have three significant figures, but in this case, I don't think the grader would be too strict on significant figures.

Daniel Chang 3I
Posts: 33
Joined: Fri Sep 28, 2018 12:23 am

### Re: Sig Figs in Problem 1.13 (6th Edition)

It's supposed to be the lowest amount of sig figs from the problem but the TA's said that sig figs shouldn't matter

Desiree1G
Posts: 62
Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 2 times

### Re: Sig Figs in Problem 1.13 (6th Edition)

I don't believe sig figs matter too much in this case, but I usually go with three in those cases. Verify with the TA

Posts: 30
Joined: Fri Sep 28, 2018 12:24 am

### Re: Sig Figs in Problem 1.13 (6th Edition)

I agree with the other replies, don't worry too much on the significant figures on that problem. In most cases you should go to the lowest significant figure, but in that problem I would just go with three significant figures.

Alex Alonso - 4F
Posts: 28
Joined: Fri Sep 28, 2018 12:27 am

### Re: Sig Figs in Problem 1.13 (6th Edition)

Thanks for all the replies, they really cleared things up.