A solid 0.6750 kg 0.6750 kg ball rolls without slipping down a track toward a vertical loop of radius R = 0.6750 m R=0.6750 m . What minimum translational speed v min vmin must the ball have when it is a height H = 1.039 m H=1.039 m above the bottom of the loop in order to complete the loop without falling off the track? Assume that the radius of the ball itself is much smaller than the loop radius R R . Use g = 9.810 m/s 2 g=9.810 m/s2 for the acceleration due to gravity.

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.