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A Avinash Dongre
Answered Jul 07, 2019
No. If two vector are collinear and parallel and they also have the same magnitude then, it is necessary that they are equal vectors. But If two vector are collinear and anti-parallel and they also have the same magnitude, then they are not equal vectors.

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A Avinash Dongre
Answered Jul 07, 2019
SI unit of Angle is radian and it is dimensionless quantity.

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A Avinash Dongre
Answered Jul 07, 2019
There is no physical quantity, which has dimension but no unit. Because if a physical quantity has a dimension then it definitely has a unit.

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A Avinash Dongre
Answered Jul 07, 2019
It is easier to use a unit like kilos when we are measuring smaller masses. But when we are calculating larger masses, it becomes more difficult to express something like 2000 Kilos, but it is much easier to say that the weight is 2 Metric tonne. (As 1 Metric tonne =1000 kg)

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A Avinash Dongre
Answered Jul 07, 2019
Scientist Giovanni Giorgi introduced the MKS System. He was an Italian physicist. Later M.K.S system was known as S.I system.
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