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The vector vecP=ahati+ahatj+3hatj and ve...

The vector `vecP=ahati+ahatj+3hatj and vecQ=ahati-2hatj-hatk`, are perpendicular to each other. The positive value of a is

A

3

B

4

C

9

D

13

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The correct Answer is:
A
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ERRORLESS -VECTORS-Exercise
  1. A force vecF=5hati+6hatj+4hatk acting on a body, produces a displaceme...

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  2. The angle between the two vectors vecA=5hati+5hatj and vecB=5hati-5hat...

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  3. The vector vecP=ahati+ahatj+3hatj and vecQ=ahati-2hatj-hatk, are perpe...

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  4. A body, constrained to move in the Y-direction is subjected to a force...

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  5. A particle moves in the x-y plane under the action of a force vecF suc...

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  6. The area of the parallelogram represented by the vectors vecA=2hati+3h...

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  7. A vector vecF(1) is along the positive X-axis. If its vectors product ...

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  8. If for two vectors vecA and vecB, vecA xxvecB=0, the vectors

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  9. The angle between (vecAxxvecB) and (vecBxxvecA) is (in radian)

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  10. What is the angle between (vecP+vecQ) and (vecPxxvecQ)

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  11. The resultant of the two vectors having magnitude 2 and 3 is 1. What i...

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  12. Let vec(A)=hat(i)A cos theta+hat(j)A sin theta, be any vector. Another...

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  13. The angle between two vectors given by 6bari+6barj-3bark and 7bari+4ba...

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  14. A vector vecA points vertically upward and vecB points towards north. ...

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  15. the angle between the vectors (hati+hatj) and (hatj+hatk) is

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  16. The position vectors of points A,B,C and D are A=3hati+4hatj+5hatk,B=4...

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  17. If force (vecF)=4hati+4hatj and displacement (vecs)=3hati+6hatk then t...

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  18. if|vecAxxvecB|=|vecA.vecB|, then angle between vecA and vecB will be

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  19. In a clockwise system:

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  20. The linear velocity of a rotating body is given by vec(v)= vec(omega)x...

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