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What is the projection of vecA on vecB ?...

What is the projection of `vecA` on `vecB` ?

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The correct Answer is:
`K=6`
`m prop [v]^(k) [d]^(x)[g]^(y)`
`[M^(1)L^(0)T^(0)]=[LT^(-1)]^(k)[ML^(-3)]^(x)[LT^(-2)]^(y)`
`rArr x=1, k-3x+y=0, -K-2y=0`
`rArr x=1, y=-3`, and `K=6`
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ALLEN -BASIC MATHS-Exercise-04 [A]
  1. Two vectors vecP and vecQ that are perpendicular to each other are ...

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  2. The magnitude of the vector product of two vectors vecA and vecB may n...

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  3. If vecPxxvecQ=vecR, then which of the following statements is not true...

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  4. The vector vecB=5hati+2hatj-Shatk is perpendicular to the vector vecA=...

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  5. Electro motive force (EMF) is :

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  6. A physical quantity which has a direction:-

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  7. Which of the following physical quantities is an axial vector ?

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  8. The minimum number of vectors of equal magnitude required to produce a...

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  9. How many minimum number of vectors in different planes can be added to...

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  10. How many minimum number of coplanar vector having different magnitudes...

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  11. What is the maximum number of rectangular components into which a vect...

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  12. What are the maximum number of rectangular component in which a vecto...

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  13. What is the maximum number of rectangular components into which a vect...

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  14. The vector sum of the forces of 10 newton and 6 newton can be:

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  15. The vector sum of the forces of 10 newton and 6 newton can be:

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  16. The unit vector along hati+hatj is :

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  17. What is the projection of vecA on vecB ?

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  18. What is the angle between vecA and the resultant of (vecA+vecB) and (v...

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  19. The angle between vectors (hati+hatj) and (hatj+hatk) is :

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  20. The angle between two vectors given by (6hati+6hatk) and (7hati+4hatj+...

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