the questi0ns are in the pictures

A thin rod, 24.5cm long with a mass of 1.48kg, has a ball with diameter 8.74cm and mass 2.25kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top. The apparatus is free to pivot about the bottom end of the rod. After it falls through 90, what i its rotational kinetic energy? 8.15 J You are correct. Your receipt no. is 160-163 ) Previous Tries What is the angular speed of the rod and ball after it has fallen through an angle of 90? 8.63 rad/s You are correct. Your receipt no. is 160-1025 ( Previous Tries What is the linear speed of the center of the ball after falling through an angle of 90? 0.443 m/s Submit Answer Incorrect. Tries 3/10 Previous Tries What would have been the speed of the ball if it had freely fallen through a distance of 28.9cm? |0.377m/s Submit Answer Incorrect. Tries 6/10 Previous Tries(7) A 2.67 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest. The composite system moves with a speed equal to one fifth the original speed of the 2.67 kg sphere. What is the mass of the second sphere? Submit Answer Tries 0/10 Water falls at the rate of 238 g/s from a height of 69.9m into a 737g bucket on a scale (without splashing). If the bucket is originally empty, what does the scale read 2.91s after the first drop of water reaches the bucket? Submit Answer Tries 0/10 A 2.01kg steel ball strikes a massive wall at 10.7m/s at an angle of a = 63.8 with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.152s, what is the magnitude of the average force exerted on the ball by the wall? Submit Answer Tries 0/10 a X A 46.7kg girl is standing on a 138kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity, in the positive direction, of 1.21m/s relative to the plank. What is her velocity relative to the ice surface? Submit Answer Tries 0/10 What is the velocity of the plank relative to the ice surface? Submit Answer Tries 0/10 A 11.2g object moving to the right at 20.0cm/s makes an elastic head-on collision with a 16.3g object moving in the opposite direction at 31.5cm/s. What is the velocity of the 11.2g object after the collision (assume positive to the right)? Submit Answer Tries 0/10 What is the velocity of the 16.3g object after the collision? Submit Answer Tries 0/10 An 8.49kg mass moving east at 17.1m/s on a frictionless horizontal surface collides with a 11.5kg mass that is initially at rest. After the collision, the 8.49kg mass moves south at 2.08m/s. What is the magnitude of the velocity of the 11.5kg mass after the collision? Submit Answer | Tries 0/10 What is the angle relative to the east? Submit Answer Tries 0/10 What percentage of the initial kinetic energy is lost in the collision? Do not enter units. Submit Answer | Tries 0/10 A person is watering the lawn with a garden hose. What force is necessary to hold the nozzle stationary if the discharge rate is 0.610kg/s with a speed of 20.0m/s? Submit Answer Tries 0/10Romeo (72.4kg) entertains Juliet (52.9kg) by playing his guitar from the rear of their boat at rest in still water, 2.53m away from Juliet who is in the front of the boat. After the serenade, Juliet carefully moves to the rear of the boat (away from shore) to plant a kiss on Romeo's cheek. How far does the 78.6kg boat move toward the shore it is facing? Submit Answer Tries 0/10 (6) Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them, as seen in the figure below. A cord initially holding the blocks together is burned; after this the block of mass 3M moves to the right (the positive direction) with a speed of v1=1.80 m/s. M Before (a) V1 M after (b) (a) What is the velocity of the block of mass M? Submit Answer Tries 0/10 (b) Calculate the original elastic energy in the spring if M = 0.355 kg. Submit Answer Tries 0/10 High-speed stroboscopic photographs show that the head of a golf club of mass 245g is traveling at 56.4m/s just before it strikes a 45.6g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 36.9m/s. Calculate the speed of the golf ball just after impact. Submit Answer Tries 0/10 The mass of the blue (lower) puck in the figure below is 24.0 percent greater than the mass of the green (upper) one. Before colliding, the pucks approach each other with equal and opposite momenta, and the green puck has an initial speed of 10.1m/s. The angle 0 = 27.90. Calculate the speed of the blue puck after the collision if half the kinetic energy is lost during the collision. Submit Answer |Tries 0/10 What is the speed of the green puck after the collision. Submit Answer Tries 0/10 An m1 = 7.65g bullet is fired into a my = 2.11kg block that is initially at rest at the edge of a frictionless table of height h = 1.08m, as seen in the figure below. The bullet remains in the block, and after impact the block lands d = 2.20m from the bottom of the table. Calculate the initial speed of the bullet. Submit Answer Tries 0/10