In order to complete a tough “split” in bowling, a bowling ball of mass 6.5 kg is rolled with a velocity of 12 m/s. The ball hits a 1.3 kg bowling pin, sending it off with a speed of
3.5 m/s at an angle of 80 degrees with respect to the original direction of the bowling ball.
What is the angle and direction of the bowling ball's velocity after the collision with the pin?

Is a copper wire a conductor or insulator?

Working alone at its constant rate, pump x pumped out ¼ of the water in a tank in 2 hours. then pumps y and z started working and the three pumps, working simultaneously at their respective constant rates, pumped out the rest of the water in 3 hours. if pump y, working alone at its constant rate, would have taken 18 hours to pump out the rest of the water, how many hours would it have taken pump z, working alone at its constant rate, to pump out all of the water that was pumped out of the tank? a) 6b) 12c) 15d) 18e) 24

Which optical device can spread light apart through refraction