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Express the vector vec a=5 hat i-2 hat ...

Express the vector ` vec a=5 hat i-2 hat j+5 hat k` as the sum of two vectors such that one is parallel to the vector ` vec b=3 hat i+ hat k` and other is perpendicular to ` vec bdot`

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The vector vec b=3 hat i+4 hat k is to be written as the sum of a vector vecalpha parallel to vec a= hat i+ hat j and a vector vecbeta perpendicular to vec adot Then vecalpha= 3/2( hat i+ hat j) b. 2/3( hat i+ hat j) c. 1/2( hat i+ hat j) d. 1/3( hat i+ hat j)

If vec a=5 hat i- hat j-3 hat k ,\ a n d\ vec b= hat i+3 hat j-5 hat k then show that the vectors vec a+ vec b\ a n d\ vec a- vec b are perpendicular.

The scalar product of the vector vec a= hat i+ hat j+ hat k with a unit vector along the sum of the vectors vec b=2 hat i+4 hat j-5 hat k\ a n d\ vec c=lambda hat i+2 hat j+3 hat k is equal to 1. Find the value of lambda and hence find the unit vector along vec b+ vec cdot

Write the value of p for which vec a=3 hat i+2 hat j+9 hat k\ a n d\ vec b= hat i+p hat j+3 hat k are parallel vectors.

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For what value lambda are the vectors vec a=2 hat i+\ lambda hat j+ hat k\ a n d\ vec b= hat i-\ 2 hat j+3 hat k perpendicular to each other?

If vec a= hat i-2 hat j+3 hat k ,\ a n d\ vec b=2 hat i+3 hat j-5 hat k , then find vec axx vec bdot verify that vec a\ a n d\ vec axx vec b are perpendicular to each other.

Find the projection of the vector vec a=2 hat i+3 hat j+2 hat k on the vector vec b=2 hat i+2 hat j+ hat k .

For what value of lambda are the vectores vec a=2 hat i+lambda hat j+ hat k\ a n d\ vec b= hat i-2 hat j+3 hat k perpendicular to each other?

Write the number of vectors of unit length perpendicular to both the vectors vec a=2 hat i+ hat j+2 hat k and vec b= hat j+ hat k

RD SHARMA ENGLISH-SCALAR OR DOT PRODUCT-All Questions
  1. Find | vec a- vec b|,\ if:| vec a|=2,\ | vec b|=3\ a n d\ vec adot ve...

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  2. Find the angle between two vectors vec a\ a n d\ vec b ,\ if:| vec a...

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  3. Express the vector vec a=5 hat i-2 hat j+5 hat k as the sum of two ve...

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  4. If vec a\ a n d\ vec b are two vectors of the same magnitude incline...

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  5. Express 2 hat i- hat j+3 hat k as the sum of a vector parallel a...

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  6. Decompose the vector 6 hat i-3 hat j-6 hat k into vectors which are pa...

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  7. Let vec a=5 hat i- hat j+7 hat k\ a n d\ vec b= hat i- hat j+lambda ...

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  8. If vec adot vec a=0\ a n d\ vec adot vec b=0\ what can you conclud...

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  9. If vec c is perpendicular to both vec a\ a n d\ vec b , then prove ...

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  10. If | vec a|= a\ a n d\ | vec b|=b, prove that ( vec a/(a^2)- vec b/(b^...

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  11. If vec a ,\ vec b ,\ vec c are three non coplanar vectors such that...

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  12. If a vector vec a is perpendicular to two non collinear vectors vec ...

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  13. If vec a+ vec b+ vec c= vec0, show that the angle theta between the v...

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  14. Let vec u ,\ vec v\ a n d\ vec w be vector such vec u+ vec v+ vec ...

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  15. Let vec a=x^2 hat i+2 hat j-2 hat k ,\ vec b= hat i- hat j+ hat k\ a...

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  16. Find the value of x\ a n d\ y if the vectors vec a=3 hat i+x hat j- h...

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  17. If vec a\ a n d\ vec b are two non collinear unit vectors such that ...

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  18. If vec a ,\ vec b are two vectors such that | vec a+ vec b|\ =| vec ...

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  19. Prove using vectors: The median to the base of an isosceles triangl...

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  20. Show that the diagonals of a rhombus bisect each other at right ang...

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