At a picnic, there is a contest in which hoses are used to shoot water at a beach ball from three directions. As a result, three forces act on the ball, F1, F2, and F3 (see the drawing). The magnitudes of F1 and F2 are F1 = 54.0 newtons (N) and F2 = 86.0 N. Determine (a) the magnitude of F; and (b) the angle 0 such that the resultant force acting on the ball is zero. E 60.0 S (a) Number HI 100 Units N (b) Number -30 Units