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Vector Addition

If P vector =...

Question

If P vector = 2i+4j+14k and Q vector =4i+4j+10k find the magnitude of Pvector +Q vector.

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Solution

P + Q = 6i + 8j + 24k

|P+Q| = ./(36+64+576) = ./676 = 26

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Similar questions

P = 2 i + 4 j + 14 k

Q = 4 i + 4 j + 10 k

, find the magnitude of

P + Q

2 i + 3 j + k

as a sum of two vectors out of which one is perpendicular to

2 i - 4 j + k

and another is parallel to

2 i - 4 j + k

p (8 i + 5 j + 4 k)

q (2 i - 4 j + k)

Q. Find the unit vectors which are perpendicular to both the vector

i + 4 j

2 i + 4 j + 3 k .

2 i + 3 j + 8 k

is perpendicular to the vector

4 i - 4 j + a k

, then the value of

a

Q. The unit vector in the direction of sum of the vectors

\to A = 2 ˆ i + 4 ˆ j - 7 ˆ k

\to B = 4 ˆ i - 6 ˆ j + 4 ˆ k

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