268926 Which of the following units could be associated with a vector quantity
268927 A vector is not changed if
268928 Which of the following is meaningful?
268929 Choose the correct statement.
268930 If angle between \(\vec{a}\) and \(\vec{b}\) is \(\frac{-}{3}\), then angle between \(2 \vec{a}\) and \(-3 \vec{b}\) is