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The projection of a vector vec(r )=3hat(...

The projection of a vector `vec(r )=3hat(i)+hat(j)+2hat(k)` on the `x-y` plane has magnitude

A

3

B

4

C

`sqrt(14)`

D

`sqrt(10)`

Text Solution

Verified by Experts

The correct Answer is:
D
Consider only `x` and `y` components: `sqrt(3^(3)+1^(2))=sqrt(10)`
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CENGAGE PHYSICS-VECTORS-Exercise Single Correct
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  7. Three vector vec(A),vec(B), vec(C ) satisfy the relation vec(A)*vec(B)...

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  10. The angle which the vector vec(A)=2hat(i)+3hat(j) makes with the y-axi...

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  11. Given vec(P)=3hat(i)-4hat(j). Which of the following is perpendicular ...

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  12. In going from one city to another, a car travles 75km north, 60km noth...

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  14. Two vectors vec(a) and vec(b) are such that |vec(a)+vec(b)|=|vec(a)-ve...

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  15. Given vec(A)=4hat(i)+6hat(j) and vec(B)=2hat(i)+3hat(j). Which of the ...

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  16. Given vec(A)=2hat(i)+phat(j)+qhat(k) and vec(B)=5hat(i)+7hat(j)+3hat(k...

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  19. Given that vec(A)+vec(B)=vec(C ). If |vec(A)|=4, |vec(B)|=5 and |vec(C...

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