(8%) Problem 9: Two air-filled balloons each have a mass of m = 3.5 g. Each balloon hangs from the same point by its own string of length L = 0.49 m. Each balloon is rubbed to give it a static charge. Both balloons are rubbed the same amount, so each balloon has the same unknown charge (q1=92). The hanging balloons push away until each makes and angle of e=19 with respect to the vertical. 33% Part (a) Choose the best Full Body Diagram of the LEFT balloon F Correct! 33% Part (b) Write an expression for the magnitude of the repulsive force required to keep the left balloon in this position. FE=mg0 Grade Summary Deductions Potential 0% 100% cos(a) cos(Q) cos(e) 7 9 HOME sin(a) sin(Q) sin(6) 14 5 6 Y 1 2 3 d g h + 0 . END m n P VO BACKSPACE CLEAR Hint Submissions Attempts remaining: 22 (0% per attempt) detailed view 1 0% 2 0% 3 0% 4 0% Submit Hints: 0% deduction per hint. Hints remaining: 3 Feedback I give up! Feedback: 0% deduction per feedback. 33% Part (c) Determine the magnitude of the charge, in coulombs, on either one of the balloons. Remember that each balloon has the same charge. (91-92) -0.01181 X Attempts Remain (8%) Problem 10: Suppose two equal charges of 1.2 C each are separated by a distance of 2.5 km in air. What is the magnitude of the force acting between them, in newtons? F= (8%) Problem 11: A test charge of +2 C is placed halfway between a charge of 5.5 C and another of 4.5 C separated by 10 cm. What is the magnitude of the force on the test charge in N? Ftot