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Question
In the product
`overset(->)("F") = "q"(overset(->)(υ) xx overset(->)("B"))`
= `"q"overset(->)(υ) xx ("B"overset(^)("i") + "B" overset(^)("j") + "B"_0overset(^)("k"))`
For q = 1 and `overset(->)(υ) = 2overset(^)("i") + 4overset(^)("j") + 6overset(^)("k")` and
`overset(->)("F") = 4overset(^)("i") - 20overset(^)("j") + 12overset(^)("k")`
What will be the complete expression for `overset(->)("B")`?
Options
`8overset(^)("i") + 8overset(^)("j") - 6overset(^)("k")`
`6overset(^)("i") + 6overset(^)("j") - 8overset(^)("k")`
`-8overset(^)("i") - 8overset(^)("j") - 6overset(^)("k")`
`-6overset(^)("i") - 6overset(^)("j") - 8overset(^)("k")`
MCQ
Solution
`underline(-6overset(^)("i") - 6overset(^)("j") - 8overset(^)("k"))`
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