Question

a particle lies in space at point( 2, 3, 4). Find the magnitude of its position vector?

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Answer 1

The co ordinates here are,

2,3,4

--> 2i-3j+4k

The magnitude goes like this;

r = √(2)^2+(-3)^2+(4)^2

--> √ 4+9+16

R=√29