Converting Units  [ENDORSED]


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Hammad Khan 2B
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Joined: Fri Sep 29, 2017 7:07 am
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Converting Units

Postby Hammad Khan 2B » Fri Oct 13, 2017 10:02 am

Hello, I'm wondering if we should look to convert units when we finish the problem. So if I have an answer lets say, 290*10^-9m then should I convert it into nm or should I just leave it as is?

Leon Popa
Posts: 18
Joined: Fri Sep 29, 2017 7:04 am

Re: Converting Units  [ENDORSED]

Postby Leon Popa » Fri Oct 13, 2017 10:14 am

Hey Hammad,

From what I've observed, in such a case I would convert the 2.90 * 10^-9 m to nanometers, considering that the problem is asking for the wavelength. If however, the your answer to a certain problem was 2.90 * 10^-38 m, it is best left in that form since the conversion is now severely complicated. Overall, I think you should convert your answer so that you get 2.90 nm.

Hope that helps,

- Leon.

Jana Sun 1I
Posts: 52
Joined: Sat Jul 22, 2017 3:00 am

Re: Converting Units

Postby Jana Sun 1I » Fri Oct 13, 2017 10:15 am

I agree with the post above. It might depend on the problem. Some might ask specifically for you to convert m to nm, but if it doesn't specify, I don't think you would lose points or anything if you kept it in m. However, it just might be easier to interpret a result if it's in nm.

Lourick Bustamante 1B
Posts: 50
Joined: Wed Nov 16, 2016 3:02 am

Re: Converting Units

Postby Lourick Bustamante 1B » Fri Oct 13, 2017 10:26 am

^ I agree with both people. Lavelle said in lecture that it's okay to leave it in meters, but as stated above, it'll be easier to interpret and use the calculation if it were to be converted.

mayapartha_1D
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Converting Units

Postby mayapartha_1D » Fri Oct 13, 2017 6:51 pm

I agree with the above as well! Sometimes it is easier to see the answer in meters (the SI unit), however in some cases it is more useful to see the answer in the closest unit. For example, if the closest thing is a nanometer, you would be able to see and compare the answer to other wavelengths.

isauramora3K
Posts: 20
Joined: Fri Sep 29, 2017 7:07 am

Re: Converting Units

Postby isauramora3K » Sun Oct 15, 2017 5:30 pm

If it was converting units such as m^3 to cm^3 then you should convert all units at the beginning but if its converting units where you simply move a decimal such as nm to pm then do it at the end.

Sandhya Rajkumar 1C
Posts: 50
Joined: Fri Jun 23, 2017 11:40 am

Re: Converting Units

Postby Sandhya Rajkumar 1C » Sun Oct 15, 2017 5:49 pm

If you are trying to compare to other wavelengths, converting to nanometers would probably make things easier.

Abigail Urbina 1K
Posts: 102
Joined: Thu Jul 27, 2017 3:01 am

Re: Converting Units

Postby Abigail Urbina 1K » Mon Oct 16, 2017 1:23 am

It might be easier to calculate and see the final answer in meters. However, when asked to compare with other wavelengths, and with questions that ask for different types of radiation, converting your answer to to units of nanometers in the end is very helpful.

Adrian Lim 1G
Posts: 88
Joined: Fri Sep 29, 2017 7:03 am

Re: Converting Units

Postby Adrian Lim 1G » Tue Oct 17, 2017 2:48 pm

It would depend on the problem as all the replies above have stated, but it may be a good idea to see the units of the values that the problem gave and just be consistent with that.

Emma Boyles 1L
Posts: 19
Joined: Thu Jul 27, 2017 3:00 am

Re: Converting Units

Postby Emma Boyles 1L » Tue Oct 17, 2017 2:56 pm

If it relates to wavelength, I think it's best to put it in nanometers.

Angel R Morales Dis1G
Posts: 50
Joined: Sat Jul 22, 2017 3:01 am

Re: Converting Units

Postby Angel R Morales Dis1G » Thu Oct 19, 2017 8:23 pm

My T.A stated that as long as the questions don't specify the SI units, you can write you answer in meters or nm etc.. But if it does specify a specific unit, always write your final answer in that unit.

Wenjie Dong 2E
Posts: 53
Joined: Fri Jun 23, 2017 11:40 am

Re: Converting Units

Postby Wenjie Dong 2E » Thu Oct 19, 2017 10:18 pm

It is better to convert to the most used units.


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