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A is a vector with magnitude A, then the unit vector A^ in the direction of A is,

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Important Questions on Scalars and Vectors

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If a unit vector is represented by 0.5i^-0.8j^+ck^, then the value of c is
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A unit vector in the direction of the negative of the vector -i^+j^-k^ is
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If A=2i^+6j^ and B=4i^+3j^, the vector having the same magnitude as B and parallel to A is
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If the sum of two unit vectors is a unit vector, then magnitude of difference is
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A vector a is turned without a change in its length through a small angle . The value of |Δa | and Δa are respectively

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A vector of magnitude a is rotated through angle θ. What is the magnitude of the change in the vector?
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The resultant of two vector P and Q isR. If the magnitude of Q is doubled, the new resultant becomes perpendicular to P. Then the magnitude of R is
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A force vector applied on a mass is represented as F=6i^-8j^+10k^ and accelerates with1 m s-2. What will be the mass of the body in kg?