Calculations for Wavelength


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Samantha Toscano 2C
Posts: 106
Joined: Wed Feb 17, 2021 12:24 am

Calculations for Wavelength

Postby Samantha Toscano 2C » Wed Oct 20, 2021 11:53 pm

I'm solving some of the homework problems, but my answers are a little off from the one given in the odd-number answer key. For example, I get 344 nm instead of 340 nm, even though I'm doing the question properly. Is this alright, since my answer is very close?

Alex FreeWolf 2E
Posts: 107
Joined: Fri Sep 24, 2021 6:04 am

Re: Calculations for Wavelength

Postby Alex FreeWolf 2E » Wed Oct 20, 2021 11:59 pm

It should be okay considering the midterm is multiple choice however make sure you pay attention to sig figs.

reminder: take the value with the lowest amount of sig figs as reference to how many sig figs you should have in your solution.

Sadhana Jeyakumar 2J
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Re: Calculations for Wavelength

Postby Sadhana Jeyakumar 2J » Thu Oct 21, 2021 12:00 am

I would also go back and make sure you're not rounding off too early. For the midterm, since it is just multiple choice questions, you should be fine if your answers are close enough. But I would still make sure that you can reach the exact answer, as sometimes rounding errors can lead to significant discrepancies when working with large values.

Samantha Toscano 2C
Posts: 106
Joined: Wed Feb 17, 2021 12:24 am

Re: Calculations for Wavelength

Postby Samantha Toscano 2C » Thu Oct 21, 2021 12:08 am

Thank you! So in that case, would it be that when I use plank's constant, I use 6.63 instead of 6.626 ?

Anthony_Rio_3K
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Joined: Sat Sep 25, 2021 5:04 am

Re: Calculations for Wavelength

Postby Anthony_Rio_3K » Thu Oct 21, 2021 1:44 am

Just a note on sig figs...we are supposed to know them but they won't show up on the midterm I believe.


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