Which of these requirements must be met by two physical quantities when they are added together?
They must have different units when expressed in base units.
They must both have units of kilograms, meters, or seconds.
They must have the same units when expressed in base units.
They must have been given to you in the same units, such inches or centimeters.
Answers: 3
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Which of these requirements must be met by two physical quantities when they are added together?
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