Question

Calculate the value of i cap.j cap

Answer 1

i cap is the unit vector for x axis
eg 2 i cap
j cap is the unit vector for y axis
eg 3 j cap
hope it will help you

Answer 2

0

Explanation:

$\hat i$ is a unit vector in x-direction and $\hat j$ is a unit vector in y-direction.

Dot product of two vectors is non-zero when they are in same direction.

$\vec A.\vec B= |\vec A||\vec B|cos \theta$

When,

$\theta = 90^o\\cos \theta =0$

Here, the unit vectors are perpendicular. Therefore, their dot product is zero.

$\hat i .\hat j =0$

Learn more about: Dot product and cross product

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