Register to reply

Percent uncertainty for noobs (like me)

Share this thread:
Sep16-13, 08:08 PM
P: 2
I KNOW this is going to be a very basic question for most of you but I am new to PF which seems awesome by the way and generally new too physics too. My question that my teacher went over on the practice questions for home was determine the percent uncertainty of the number 1.56.

I know from working with this before and my few but awful attempts to solve this and look up a way how to do it but since we are using 3 significant figures would I use 0.01 as my uncertain value divide it by 1.56 and multiply it by 100. I tried this and I was wrong and i can't seem to find out why if you could tell me how to go about this question and what number I would use as my uncertain value and why that would be great :)
Phys.Org News Partner Physics news on
'Comb on a chip' powers new atomic clock design
Quantum leap in lasers brightens future for quantum computing
Enhanced NIST instrument enables high-speed chemical imaging of tissues
Sep16-13, 09:01 PM
P: 886
I think you are supposed to use 0.005 as the uncertainty, but really, your answer is somewhat reasonable.
Sep16-13, 09:04 PM
Integral's Avatar
P: 7,314
Your post should/could be deleted. This is a homework question, please repost this in the Intro Physics forum. Please use the template and SHOW your work.

Thank you,

Register to reply

Related Discussions
Percent Uncertainty Introductory Physics Homework 12
Percent Uncertainty Introductory Physics Homework 6
Percent uncertainty Precalculus Mathematics Homework 5
Percent Uncertainty Introductory Physics Homework 4
Percent uncertainty? Introductory Physics Homework 3