Question 3.CA.1: Let us compute the vector product V = P × Q, where the vecto......

Let us compute the vector product V = P × Q, where the vector P is of magnitude 6 and lies in the zx plane at an angle of 30° with the x axis, and where the vector Q is of magnitude 4 and lies along the x axis (Fig. 3.7).

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It follows immediately from the definition of the vector product that the vector V must lie along the y axis, directed upward, with the magnitude

V = PQ sin θ = (6)(4) sin 30° = 12 ■

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