The magnitude of the vector \(\vec{a}\) = \(\hat{i}\) +2\(\hat{j}\)+3\(\hat{k}\)
Answer & explanation
Correct answer: option 2
We have \(\vec{a}\) = \(\hat{i}\) +2\(\hat{j}\)+3\(\hat{k}\)
|\(\vec{a}\)| = √(1)2 + (2)2+ (3)2
|\(\vec{a}\)| = √1+4+9
|\(\vec{a}\)| = √14