Find two vectors v1 and v2 whose sum is ⟨−5,−4⟩, where v1 is parallel to ⟨1,−1⟩ while v2 is perpendicular to ⟨1,−1⟩.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

k2s for potassium sulphide