Questions 3-6 all parts answer short and simply

3. Calculate the magnitude of the electrical force between two charges q1 = 6.5 x 10" C and q2 = 1.7 x 102 C when the charges are separated by a distance of 0.25 m. Show all work (equation used, substitution with units, and answer with units) in the space below. Is the force attractive or repulsive? Which charge exerts a greater electrical force on the other charge? 4. Calculate the electrical force between a charge of -1.6 JC and a charge of 9.4 nC when the charges are separated by a distance of 7.3 mm. (Hint: Express charge in coulombs, C, and distance in meters, m.) Is the force attractive or repulsive? 5. Three charges are glued to the points of an equilateral triangle. The electrical forces that q1 exerts on q3 and that q3 exerts on q2 are shown as arrows. Charges q1 and q2 each have twice the charge of q3. The magnitude of the two force arrows shown is equal. q1 92 Draw in the remaining 4 force arrows. 93 Draw the resultant force acting on each charge due to the other charges. 6. Two identical charged metallic spheres are hanging at rest from threads as shown in the diagram below. Both threads make an angle of 23 from the vertical. On the diagram at right, draw and label two other forces that act on the right-hand sphere. (The tension and its components are drawn for you.) The point represents the sphere. Force diagram: T K- Tcos230 230 Tsin230 a If the mass of the sphere is 5.0 x 10"* kg, find the sphere's weight. b/ Which component of the tension is balanced by the weight? Use that fact to find the tension T. c/ Which component of the tension is balanced by the electrical force? Use that fact to find magnitude of the electrical force. d/ If the charges are separated by a distance of 4.0 x 10" m, find the amount of charge on the sphere. Assume the charge on both spheres is the same