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kJ vs J

Posted: Sun Feb 03, 2019 10:11 am
by Lauryn Shinno 2H
The textbook switches between giving the answer in kJ and J. Does it matter which one I use?

Re: kJ vs J

Posted: Sun Feb 03, 2019 10:26 am
by Sara Flynn 2C
It should not matter because KJ is just 1000 J, as long as you are using the proper units so that everything will cancel properly you should be good.

Re: kJ vs J

Posted: Sun Feb 03, 2019 11:15 am
by Alexa_Henrie_1I
Lavelle said they are interchangeable so you could use either as long as the answer matches the units.

Re: kJ vs J

Posted: Sun Feb 03, 2019 11:25 am
by Ariel Cheng 2I
Either should be fine as long as you are consistent in your calculations and make sure that everything matches up properly.

Re: kJ vs J

Posted: Sun Feb 03, 2019 1:19 pm
by Hilda Sauceda 3C
1 kj = 1000j but you can use which ever

Re: kJ vs J

Posted: Sun Feb 03, 2019 2:15 pm
by Arta Kasaeian 2C
I don't think it matters unless specifically requested in the problem. However it's important to take account of the constants given and needed to use as the R value may specifically require the use of J over kJ.

Re: kJ vs J

Posted: Sun Feb 03, 2019 2:54 pm
by kimberlyrose1G
I think it depends on your answer, for example, if the answer is a very large value of J, you should convert it to kJ. Or if the problem gives you what units to have your answer in, that's always what you should go with.

Re: kJ vs J

Posted: Sun Feb 03, 2019 8:36 pm
by Mercan Bayazit 4E
You can use whichever as long as you make sure your conversion is correct (1kJ = 1000J).

Re: kJ vs J

Posted: Mon Feb 04, 2019 11:08 am
by Nicolle Fernandez 1E
Just make sure you do the conversion correctly as 1kJ = 1000J and whatever you put the answer in is fine

Re: kJ vs J

Posted: Mon Feb 04, 2019 11:14 am
by 005115864
Both are good, just be careful and pay attention to units because sometimes a constant will be given in joules instead of kj so then you have to convert to joules in order to cancel out.