Please answer all the following questions

Name: TOOL Assignment By Electrostatics & Coulomb's Law Part 1 Multiple Choice: Circle the statement that best answers the question or completes the sentence AND SHOW ALL mathematical work to support your answer. No work = No marks (1 mark each) 1. Which of the following statements describes a relationship between the forces described by Coulomb's Law and the forces described by Newton's Law of Universal Gravitation? A. In atoms, gravitational forces are weaker than electrical forces. B. Gravitational forces and electrical forces are attractive forces only. C. Gravitational forces act at any distance; whereas, electrical forces act at very short distances only. D. As the distance between objects increases, electrical forces increase, whereas gravitational forces decrease. C Use the following information to answer the next question. A positively charged rod is placed near, but not touching, a neutral metal ball. 2. As a result of the rod's position, side X of the ball becomes relatively: A. Negative and the ball is repelled from the rod B. Positive and the ball is repelled from the rod C. Negative and the ball is attracted to the rod D. Positive and the ball is attracted to the rod CName: Use the following information to answer the next TWO questions. Name:_ + + + + + + + Part 2: Written Response - Answer each question in the space provided. Be sure to write full and detailed answers and/or show all mathematical work to earn full marks. 7. Neutral paraffin wax is rubbed with neutral wool, and as a result, the wool gains a positive charge. a) How did this happen? b) Which is higher on the electrostatic series? Give a reason for your answer. 3. The bottom of a thundercloud usually becomes negatively charged. Before lightning strikes, the charge of the ground directly beneath the thundercloud will become A. Positive by induction B. Negative by induction C. Positive by conduction 8. A comb with 2.0 JC of charge is 1.5m to the left from a hair with -3.0 JC of charge. D. Negative by conduction Determine the force the hair exerts on the comb. 4. During the downward lightning strike, the charge on the top of the tree becomes A. Negative by induction B. Negative by conduction C. Neutral by induction D. Neutral by conduction 9. Two points of equal charge produce an electric force on each other of 3.40 X 102 N 5. A conducting sphere X that has an initial charge of +2.0 X 10- C and an identical when placed 1.00 X 102m apart. What is the charge on each point? conducting sphere Y that has an initial charge of -3.0 X 10C are touched together. After they are separated, the charge on sphere X is A. -5.0 X 10-C B. -1.0 X 10 8C C. -2.5 X 10-8C D. -5.0 X 10-8C 6. The magnitude of the electrical force on an alpha particle that is 4.0 X 10-10m from an electron is: A. 5.8 X 10 -19N B. 1.2 X 10-18 N C. 1.5 X 109N D. 2.9 X 10 9 NName: Name:_ 11. (Multiple choice) 10. The following three charges are arranged as shown. Determine the net force acting on the charge on the far right (q3). Sub . q1 = 1 5 x 10" C 92=-23 x 10" C 93= -3 5 x 104 C Electrostatic Forces 1.7 m Three charges are 1.4 m placed at the corners A- -2.00HC of an equilateral triangle with sides of 3.00 cm. 3.00 cm 3.00 cm 1. = 1 C= -2.00HC 600 B= -2.00 HC 3.00 cm The correct free-body diagram showing the forces acting on charge B is: a. c. b . d. 12. Refer to the above Electrostatic Forces diagram. What is the net electrostatic force on charge B? C