how to calculate propagation of errors?
I have a first year physics assignment, and I am completely lost.
Pfinal = 605 ± 5 Pa
Pinitial = 521 ± 5 Pa
the question is : ΔP = Pfinal -Pinitial
How do I do this!!? Any help would be greatly appreciated. Thank You :)
When I use an online propagation calculator, I get ΔP = 84 ± 7
- 9 years agoFavorite Answer
It is very simple. ± 5 Pa Is the uncertaintey - error - of the value.
So, you subract the final value from the initial Pf-Pi
The error will be the sum of the relative errors, ie, 5/605 + 5/521, times 605+521, and you consign it as ± etc., AFTER you round it off to a single digit.
You can work it out from here on