A vector originally at a direction of 30°, when measured counter-clockwise with respect to the +x axis, is rotated a further 30° counter-clockwise.
The magnitude of the vector will ...
1. Increase by a factor of 4
2. Increase by a factor of 2
3. Remain the same
4. Decrease by a factor of 2
5. Decrease by a factor of 4
The magnitude of the vector will ...
1. Increase by a factor of 4
2. Increase by a factor of 2
3. Remain the same
4. Decrease by a factor of 2
5. Decrease by a factor of 4
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the magnitude stays the same; the magnitude is just the length of the vector and does not change if you move the vector, but only if you stretch or compress it