## Uncertainty value in equation

$\Delta p \Delta x\geq \frac{h}{4\pi }$

Andrea_1H
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Joined: Wed Sep 18, 2019 12:18 am

### Uncertainty value in equation

For the uncertainty value, you add up the total uncertainty right? So for example, if you have 105 m +/- 3 m, the uncertainty value is 6 m? Or is it 3?

ShastaB4C
Posts: 100
Joined: Thu Sep 26, 2019 12:18 am

### Re: Uncertainty value in equation

I would say just +/- 3 so 3 as an absolute value

kpang_4H
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Joined: Fri Sep 20, 2019 12:17 am

### Re: Uncertainty value in equation

You would add it up, so the uncertainty value would be 6.

904914037
Posts: 65
Joined: Wed Sep 18, 2019 12:16 am

### Re: Uncertainty value in equation

In discussion section last week, my TA said to add them up so yes it would be 6!

Jasmine 2C
Posts: 184
Joined: Wed Sep 18, 2019 12:18 am

### Re: Uncertainty value in equation

Yes because the "range of uncertainty" if you would call it that, or margin of uncertainty, is +/- 3 so it's basically the absolute value of 3 times 2.

Caroline Zepecki
Posts: 101
Joined: Fri Aug 09, 2019 12:16 am

### Re: Uncertainty value in equation

Do uncertainty values always have to be whole integers? also when giving the "total uncertainty" do you always know to just add the numbers or will it ever specify for the range?

Veronica_Lubera_2A
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### Re: Uncertainty value in equation

I also asked my TA and she said it would be 6. There was some confusion because the answer key was wrong for one of the homework questions but it should be double the +- value.

Justin Sarquiz 2F
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Joined: Fri Aug 30, 2019 12:15 am

### Re: Uncertainty value in equation

Uncertainty values do not always have to be integers. We could have 5 +- 1.3. The uncertainty value would be 1.3(2)= 2.6.

emma brinton_3B
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Joined: Fri Aug 09, 2019 12:17 am

### Re: Uncertainty value in equation

yes you add the total uncertainty since it makes it account for both the positive or negative

Nathan Nakaguchi 1G
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### Re: Uncertainty value in equation

Uncertainty accounts for both the positive and negative, so if your v was 103 +or- 3 then the uncertainty would be 3(2)= 6.