how do i find the absalute uncertainty for the following 82.5+/-5.2% 679800+/-0.19% 0.0079+/-8.1% 420+/-23% calculate the relative uncertainty for the following 1. 2.75 0.06 2. 714 8 3. .0031 0.0008 4. 204000 5000 5. 1.78 x 10-3 6 x 10-5 my answers 1. 2% 2. 1.12% 3. 2.5% 4. 2.4% 5. 3.4%
I assume there is a ± between the numbers in the second set of 5. #3 is incorrect. For #1, I would think you might keep another decimal place or two as you did for the others. Finding absolute uncertainty from % uncertainty is the reverse process that you used for finding % from absolute. What is 5.2% of 82.5?