How do you compute the dot product for $6 j \cdot 4 k$ $6j*4k$ ?

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Answer 1 · 2016-07-01T11:42:50

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#6j=0i+6j+0k=(0, 6 0) and 4k=0i+9j+4k=(0 0 4)

The dot product (a1 a2 a3).(b1 b2 b3)=((a1)(b1)+(a2)(b2)+(a3)(b3).

Here, $6 j .4 k$ $6j.4k$

=(0 6 0).(0 0 4)

=(0)(0)+((6)(0)+(0)(4)

$= 0$ $=0$ .

How do you compute the dot product for 6j⋅4k6j*4k?