Question

for an answer to be complete , the units need to be specified. why? ​

Answer 1

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It is important for us to specify both the magnitude and the unit to successfully represent the value of a physical quantity as well as individually either one is meaningless and incomplete.

Answer 2

Answer:

It is important to specify the units in the answer because it adds meaning. A number with a unit is called a magnitude.

The device is used to compare similar sizes. It serves as a benchmark for measurements.

A distance value only in the figure, for example 5, does not give a clear meaning. After adding the unit of measurement, it becomes five meters, which accurately conveys the distance.

The value of time only as ten does not give a clear meaning. After adding unit seconds, it becomes ten seconds, which accurately conveys the time.

Additional information:

We need a standard unit of measurement to make our decision more reliable and accurate. For proper administration, the measurements should be the same for everyone. So the measurement should be consistent. For the sake of uniformity, we need a uniform set of units of measurement called standard units. Today, Si units are almost universally accepted in science and technology.

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