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Physics
Physics
Problem
Add
6.435
×
10
−
4
6.435\times 10^{-4}
6.435
×
1
0
−
4
and
2.1
×
10
−
4
2.1\times 10^{-4}
2.1
×
1
0
−
4
. Write the sum in scientific notation, rounded to the proper number of significant figures.
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