8. A 0.250 kg steel ball with a speed of 7.00 m/s collides with a stationary 0.100 kg steel ball. After the collision, the 0.100 kg ball has a velocity of 5.50 m/s at an angle of 560 from the original line of action. What is the final velocity of the 0.250 kg ball\":J [6.05 m/s @ 17.5 from the original line] 9. A 10.0 kg mass is traveling west at 20.0 m/s when it explodes into two pieces of 6.0 kg and 4.0 kg. If the final velocity of the 6.0 kg piece is 12.5 m/s at 40 south of east, what is the final velocity ofthe 4.0 kg piece? (65.5 m/s @ 10.6 N of W] 10. Two steel balls, each with a mass of 2.50 kg, collide. Prior to the collision, one of the balls was at rest. After the collision the speed of one ball is 3.00 m/s and the other has a speed of 4.00 m/s. If the angle between them after the collision is 90, what was the original speed of the moving ball? [5.00 m/s] 11. Two pieces of plasticene slide along a frictionless horizontal surface and collide, sticking together. One of the pieces has a mass of 0.20 kg and a velocity of 5.0 m/s at 30 west of north. The other piece has a mass of 0.30 kg and is moving at 4.0 m/s at 45 north of east. What is the velocity of the combined lump after they collide? (3.5 m/s @ 79 N of E) .'I "I _-__ *m Electrostatic: 1. When a nearby charged object causes a change in the distribution of charge on a neutral object, this is called an induced charge separation. Is it possible to create an induced charge separation on an insulator? On a conductor? Explain your answers. 2. The leaves of an electrosco pe will repel each other if you touch the electroscope with a positively charged glass rod. Use a series of charge diagrams to explain what happens and why the leaves repel each other. 3. Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved so that the spheres no longer touch. Then the rod is withdrawn. Aftenyard, what is the charge state of each sphere? Use charge diagrams to explain your answer. 4. Two identical metal spheres have different charges. One has a charge of +1D C and the other has a charge of2l] C. If the spheres are allowed to touch each other for a time and then are moved away from each other. what is the final charge on each sphere? Explain 5. A 1.3 g [is kg} pith ball is suspended from a thread and placed in an 1 electric field. When placed in the electric field. the pith ball is deflected to the left so that the thread makes a 9.5" angle with the vertical. Calculate the electrostatic force on the pith ball. ((11103!) N] chm-puma coulomb's Law and Electric forces Electric Fields 13. Calculate the distance from an electron where the magnitude of the electric field would be 5.14 x 1013 N/C? [5.29 x 10-13 m]22. Determine the magnitude and direction of the electric field at location A in the diagrams below. CBe-Learn Physics 30 Module 3 Assignment September 2020 3 HC Q2 -4uCE + 3 HC 1 cm 1 cm Q3 8 AC -5AC AX -2 HC Electric Potential Difference