Planck's Constant Value [ENDORSED]

[Fiona Grant 1I]

When we are doing calculations involving Planck's constant, h, I was just wondering if it is better to use 6.626 x 10^-34 J.s or 6.63 x 10^-34 J.s? I've seen it both ways and I was just curious. Thanks!

[Natalie Noble 1G]

I don't think it makes a difference. If we are taking a test, they give us a page with formulas and constants so I would just use whatever is on that. Personally, I prefer to use 6.626 x 10^-34 because it has higher accuracy since it goes to more decimal places.

[Nicole Shak 1L]

I think for intermediate calculations it's always safer to put more decimals for a greater accuracy.

[danielruiz1G]

It depends on significant figures rules and if you're multiplying/dividing or adding/subtracting

[Amir Akhavan 1E]

It is always safer to use whatever is given on the formula sheet. However, more decimals will give a more exact answer which may be preferred.

[yazminedesan1F]

I would use whats given or whatever has more decimals just to be more accurate

[Hope_Pham_1G]

For homework, I like to use the more accurate value for Planck's constants. For tests, I use 6.626 x 10^(-34) because the tests are timed, and it's faster to input this version.

[shouse1f]

since I think the value is usually given I would use whichever they give.