Answer the following questions and PLEASE MAKE SURE ITS DONE ON PAPER PLEASE.

1. The dwarf planet Pluto has a radius of 1.15 x 10 m and a mass of 1.2 x 1022 kg. What is the value of g on the surface of Pluto? [2 marks] 2. If a 1.5 x 10 C charge exerts a electric force of 1.9 N on a 3.2 x 10-*C charge, how far away are they located? [2 marks] 3. What is the electric field intensity 0.5 m away from a small sphere with a negative charge of 1.6 x 10-8c? [Note: Direction is outward or inward] [2 marks] 4. A negative charge of 2.4 x 10- C experiences an electric force of magnitude 3.2 N, acting to the left. What is the magnitude and direction of the electric field at that point? [2 marks] 5. Two charges q1 = -25C and 93 = 4C are placed 1.2 m apart. A third negative charge q2 is placed a distance L from q, as shown. If the net electric force on q2 is 0 N, what is the value of L? [5 marks] 6. Uranus orbits the Sun (Ms = 1.99 x 1030kg) with a mean radius of 2.87 x 1012 m. In Earth years, how long does it take Uranus to complete one orbit? [4 marks]7. An electron with a velocity of 5.0 x 100m/s is injected into a parallel plate apparatus through a hole in the positive plate. It moves across the vacuum between the plates slowing down before colliding with the negative plate at 1.0 x 10 m/s. Using the conservation of energy for electric charges, what is the potential difference between the plates? [4 marks] 8. a) Refer to the electrostatic series. A carbon rod is rubbed with silk. Describe the transfer that occurs and the resulting charge that each object has after their interaction. [2 marks] weak hold on acetate electrons glass wool cat fur, human hair calcium, lead increasing aluminum tendency cotton to gain paraffin wax electrons ebonite polyethylene (plastic) carbon, copper, nickel sulfur platinum, gold strong hold on b) What is the difference between charging by friction and charging by contact? electrons [1 mark] 9. Determine the magnitude and direction of the magnetic force on a proton moving horizontally to the north at 8.6 x 10# m/s, as it enters a magnetic field of 1.2 T, pointing vertically upward. [2 marks] 10. How much work is done against gravity to fire a 900-kg GPS satellite 200 km into the air? (E = 6.38 x 105 m, ME = 5.98 x 1024kg) [4 marks]