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Diwas Pandit asked a question

Yes, if the angle between the two vectors is more than 90o but less than 2700. (cosΘ is negative)

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Atith Adhikari asked a question

Yes, a physical quantity can have magnitude and direction but still be a scalar if it doesn't obey the vector addition. An example is Electric Current which has magnitude and a fixed direction, but it does not follow vector laws of addition.

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