Constant Question

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Constant Question

Postby 105194078 » Thu Oct 17, 2019 12:29 pm

Does it make it a big difference if you switch the constant from 6.626 to 6.63 for p?

Debora Fernandez Clemente_ 4H
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Re: Constant Question

Postby Debora Fernandez Clemente_ 4H » Thu Oct 17, 2019 12:33 pm

Usually just use the constant they give in the equation sheet, which I believe is usually 6.626*10^-34 J*s. Rounding up sometimes can eventually lead your answer to be slightly off from the real answer, so it is better to be more precise with your constants.

Yailin Romo 4G
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Re: Constant Question

Postby Yailin Romo 4G » Thu Oct 17, 2019 12:46 pm

It might not make that big of a difference and my ta has stressed again and again that as long as your answer is close enough to the actual answer it shouldn't be counted as wrong.

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Re: Constant Question

Postby AlyshaP_2B » Thu Oct 17, 2019 1:13 pm

I don't think it will change your answer too much, but if you're rounding at multiple steps during the process then your final answer won't be as accurate as it could. If possible, I would avoid rounding as much as possible until getting to the final step.

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Re: Constant Question

Postby 405268063 » Thu Oct 17, 2019 2:42 pm

On tests, I personally would just use all of the figures in the constants the sheet gives you to get the most accurate number. Even in doing informal practice problems, I would use 6.626 because changing the number to 6.63 will give you a slightly different answer and sometimes you don't know if it's because you missed a step in the problem or because you just substituted a constant.

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Re: Constant Question

Postby VioletKo3F » Thu Oct 17, 2019 3:27 pm

I would use whatever value is given on the equation sheet to be safe. Rounding should always come at the end so don't be lazy when doing the calculations.

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Re: Constant Question

Postby MAC 4G » Thu Oct 17, 2019 4:08 pm

I think it's best to use the value you are given rather than rounding. However, if you do choose to your answer shouldn't be off by that much. My TA has mentioned that if you are within a certain range, specific to each TA, you'll still receive full credit. Personally, I'm one to write out all of the steps so sometimes I short hand (round) when I'm writing it out, but when I plug it into the calculator I type out the full value. If you are doing it for your own practice I don't see a problem with rounding, but for a test/exam, it would be better to use the full value.

Nathan Nakaguchi 1G
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Re: Constant Question

Postby Nathan Nakaguchi 1G » Thu Oct 17, 2019 4:16 pm

Personally, I would use whatever number is more accurate. In test scenarios I would go for every digit given on the constants sheet. It shouldn't be too much of a big deal though to opt for 6.63 so long as it is clear that you're using that number and your answer is pretty much the same.

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