Ans is d..... but how...?
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Ruhi9871:
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it's 9i -3i -8j
=6i-8j
Resultant is 6î-8j
Its magnitude is √(6^2+8^2)= 10N
=6i-8j
Resultant is 6î-8j
Its magnitude is √(6^2+8^2)= 10N
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