Agirl is whirling a ball on a string around her head in
ahorizontal plane. she wants to let go at precisely the right
timeso that the ball will hit a target on the other side of the
yard. when should she let go of the string?

Answered

Explanation:

The girl whirling the ball should let go off ball when the ball is at a position such that tangent to the circle is in the direction of the target.

the tangent at any point in a circular path indicates the direction of velocity at that point. And the moment when the centripetal force is removed the ball will follow the tangential path at that moment.

i think the answer would be b

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).