Physics, asked by vaishnavi0826, 9 months ago

a.
Vector Ã = 4i-2j+4k
& B = -4i+2j+alphak
are perpendicular to each other then find the value of alpha

Answers

Answered by Anonymous

6

Explanation:

A × B = 0

as they are perpendicular to each other

A×B = I j k

4 -2 4

-4 2 +a

A×B = i ( -2a-8) -j(4a+16) +k(0)

0 = -2ai+8i-4aj-16j +0

solve further and get your answer

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