A.) what is the minimum uncertainty in an electron's velocity (δmin) if the position is known within 13 å? b.) what is the minimum uncertainty in a helium atom's velocity (δmin) if the position is known within 1.0 å?

i'm assuming that the correct answer is indeed the first one/ "a"..

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >