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A vector vecA of magnitude 2 units is i...

A vector `vecA` of magnitude 2 units is inclined at angles `30^@ and 60^@` with positive x-and y-axes, respectively. Another vector of magnitude 5 units is aligned along the positive x-axis . Then `vecA*vecB` is

A

`5sqrt(3)`

B

`3sqrt(5)`

C

`2sqrt(3)`

D

`3sqrt(2)`

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The correct Answer is:
A
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  12. vecA*vecA=?

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  14. A vector normal to acos theta hati+b sin thetahatj is

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  15. A vector vecA of magnitude 2 units is inclined at angles 30^@ and 60^...

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  16. For what values of a and b , the vector (ahati+bhatj) will be a unit ...

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  17. Two billiard balls, starting from the same point, have velocities (ha...

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  18. If |vecAxxvecB|=sqrt(3)vecA*vecB, then |vecA+vecB|=?

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  19. The vector product of vecA and vecB is zero . The scalar product of ve...

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  20. If vecA*vecB=vecA*vecC=0 , then the vector parallel to vecA would be

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