- #1
chocopop
- 4
- 1
- Homework Statement
- Find the desired sum: (3±4%)+(4±0.01)
- Relevant Equations
- none
please help me
Understanding the Concept of Sum in Physics: A Beginner's Guide
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Homework Help Overview
The discussion revolves around understanding the concept of sum in physics, particularly in the context of propagation of uncertainties in measurements.
Discussion Character
- Mixed
Approaches and Questions Raised
- Some participants suggest using the formula for propagation of uncertainties, while others emphasize the need for the original poster to demonstrate their understanding or attempt at a solution.
Discussion Status
The discussion has been locked due to the original poster's lack of effort in previous posts, despite guidance being offered regarding the use of uncertainty formulas.
- #2
etotheipi
Well, why not just use the formula for propagation of uncertainties, if ##z = a + b##, then$$\Delta z = \sqrt{(\Delta a)^2 + (\Delta b)^2}$$N.B. you need to convert the percentage uncertainty in the first measurement into an absolute uncertainty first.
- #3
BvU
Science Advisor
Homework Helper
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Check out https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/ and post your attempt at solution.
The sum is 7 
, but what have you learned about handling uncertainties ?
, but what have you learned about handling uncertainties ?- #4
berkeman
Admin
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OP has been banned for repeatedly posting homework with zero effort shown, even after multiple warnings. Have a nice day. Thread is locked.
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