Understanding the Concept of Sum in Physics: A Beginner's Guide

[chocopop]

Homework Statement

Find the desired sum: (3±4%)+(4±0.01)

Relevant Equations

none

please help me

 

[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.

 

[BvU]

Check out https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/ and post your attempt at solution.

Spoiler

The sum is 7 , but what have you learned about handling uncertainties ?

 

[berkeman]

OP has been banned for repeatedly posting homework with zero effort shown, even after multiple warnings. Have a nice day. Thread is locked.