1. what is the force of gravity between two student of mass 65.0kg and 75.0kg, separated by a distance of 1.25m between theire centres?
2. a car battery transferred 60.0J of energy to 5.00C electrons to light up the headlight of a car. what was the voltage of the battery?
3. Colour television broadcasting was made available in 1940. An early colour TV used a flyback transformer to produce a potential difference of about 29000V to operate the electron gun in the television. The gun had a length of 10.0cm. How fast were the electrons moving when they left the electron gun?

'F5F4:28 223EllE ?-030%I 4. One way of testing general relativity is gravitational lensing. Explain how this works, and what differences occur in the predictions of Newton and Einstein. (C: /5) 5. Refer to the electrostatic series. A carbon rod is rubbed with silk. Describe the charge transfer that occurs. (C: /5) weak hold on acetate electrons glass wool cat fur, human hair calcium, lead silk increasing aluminum tendency cotton to gain A paraffin wax electrons ebonite / polyethylene (plastic) 12 carbon, copper, nickel sulfur platinum, gold strong hold on I elemmns I 'F5F4:28 2%]23EUQE ?-030%I Name: ID: A 6. Add solid lines with arrowheads to the diagram to illustrate the magnetic eld lines around a permanent bar magnet. (C: /5)