Why does a measurement need both a number and a unit' for its complete
specification?
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Explanation:
A measurement needs both a number and a unit for complete specification because : If we just say 6, the other person will not understand what we mean; hence we have to use a unit of length. If we just say metres, the person will wonder how many metres; therefore we have to tell the number to express the right quantity.
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1
Answer:
we known that measurement is the process of comparing an unknown quality with a known quantity where the no quantity is called unit. while measuring some physical quantity with a unit we need to express the number of time that physical quantity is the term of that unit number of time and unit give the complete specification
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