Question

A vector A points vertically upwards and B faces north. The vector product is A × B

Answer 1

Answer: Cross product: The notation is vec Axx vecB and the result is a vector with magnitude A*B*sinphi where phi is the angle between vec A and vecB. If you need the cross product of your 2 vectors, the result is a vector with magnitude A*B -("note that " sin90^@ = 1). Determining the direction of this vector requires application of the right-hand-rule.