Question

Two different masses are determined as (23.7 ± 0.5) g and (17.6 ± 0.3) g. What is the sum of their masses?

Answer 1

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Answer 2

Answer:

The sum of the masses = (41.3 ± 0.8)

Explanation:

As per the given data of the question, we have

Value of first mass = (23.7 ± 0.5) g

Now,

Let this mass be A =  (23.7 ± 0.5) g

That is,

A = 23.7 and ΔA = 0.5

Value of other mass = (17.6 ± 0.3) g

Now,

Let this mass be B = (17.6 ± 0.3) g

That is,

B = 17.6 and ΔA = 0.3

Therefore,

Sum of the both masses is written as

Sum = A + B ± ( ΔA + ΔB )

        = 23.7 + 17.6 ± ( 0.5 + 0.3 )

        = 41.3 ± 0.8

Hence, the sum of the masses = (41.3 ± 0.8)