Planck's Constant
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Planck's Constant
When we're using Planck's constant, do we use 6.626 X 10^-34 or 6.63 X 10^-34? Professor switches off between the two in the lecture notes.
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Re: Planck's Constant
It doesn't matter because the only difference between 6.626 X 10^-34 and 6.63 X 10^-34 is the number of significant figures. I would use 6.626 X 10^-34, as more significant figures will usually lead to a more accurate answer in the end.
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Re: Planck's Constant
I believe he uses 6.63 X 10-34 when there are only a maximum of three significant figures are given. Otherwise, if given four or more, he will use 6.626 X 10-34.
Regardless, I would agree though that using 6.626 X 10-34 consistently will give the most accurate results.
Regardless, I would agree though that using 6.626 X 10-34 consistently will give the most accurate results.
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