Question

Consider two vectors $\vec{F_{1}} = 2\hat{i} + 5\hat{k}\ and\ \vec{F_{2}} = 3\hat{j} + 4\hat{k}$. The magnitude of the scalar product of these vectors is
(a) 20
(b) 23
(c) 5√33
(d) 26

Answer 1

(c)......................