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Speed of Light

Posted: Thu Oct 18, 2018 4:59 pm
by Matia Kim 1B
In terms of given variables (e.g. speed of light), how many significant figures is recommended to answer a problem?

Re: Speed of Light

Posted: Thu Oct 18, 2018 5:08 pm
by Sarah Jeong 4F
Hi Matia,
I think in terms of sig figs for constant, just copy the full number from that is given on the formula sheet.
But for the actual final answer, use the sig figs of the numbers that are given in the question.

Re: Speed of Light

Posted: Thu Oct 18, 2018 6:38 pm
by Arlene Linares 3A
Matia Kim 1B wrote:In terms of given variables (e.g. speed of light), how many significant figures is recommended to answer a problem?


good question to ask didn't think about this.

Re: Speed of Light

Posted: Thu Oct 18, 2018 6:39 pm
by Arlene Linares 3A
Sarah Jeong 4F wrote:Hi Matia,
I think in terms of sig figs for constant, just copy the full number from that is given on the formula sheet.
But for the actual final answer, use the sig figs of the numbers that are given in the question.


Thank you the info

Re: Speed of Light

Posted: Thu Oct 18, 2018 8:19 pm
by Chloe Thorpe 1J
My TA said that we should always use whatever is on the formula sheet so we can avoid as much rounding error as possible. Same goes for other constants (h, R, etc.).

Re: Speed of Light

Posted: Thu Oct 18, 2018 11:08 pm
by KatelinTanjuaquio 1L
As with all problems, it is best to use the number of figures given on the formula sheet. Then round off your sig figs as given in the question to ensure the most accurate answer.