A proton is briefly accelerated in the direction of the arrow labeled å. At an observation location indicated by the vector f on the diagram, ā, is shown in red. 9 (a) If 0 = 68 degrees, and the magnitude of the acceleration is 1.8e+17 m/s²2, what is the magnitude of ä? m/s² (b) What is the magnitude of the radiative electric field at the indicated observation location, if the magnitude of f is 0.011 m? N/C (c) What is the direction of the radiative electric field at the observation location? O opposite to f opposite to O opposite to å 10/10 V7

Consider the following situation. A positive charge q is located a distance R from a charged wire bent into a circular arc as drawn. The arc has radius R, a net positive charge Q, and an angular extent of 30° (T/6 radians) centered on the same axis as q. 15° a. Calculate the electric field (vector) the arc of wire produces at q's location. Give the vector in component form. The vector only has one component. You should write down in words an argument using the problem's symmetry for this. b. Find the net force (vector) on q by the arc of wire. Give the vector in component form. c. Compare this force to the force produced by a positive point charge Q located a distance R away from q. Which force is greater, (b) or (c), and by what fraction? Show this algebraically.

Problems 4-5 refer to the following diagram and situation. A point charge (with charge Q) at the end of an insulating cord is observed to be in equilibrium in a uniform horizontal electric field of when the pendulum's angle with the vertical is 0 = 38.6°, is as shown in the Figure. The electric field is to the right and the strength of the electric field is 9500 N/C. The mass of the point charge is m = 0.0200 kg and the acceleration due to gravity is 9.8 m/sec². Problem 4: What is the tension on the cord? a. 0.251 N Problem 5: What is the charge Q? a. (1.65 x 10-5)C E b. 0.451 N b. (3.65 x 10-5)C 0 Q m c. 0.651 N C. (5.65 x 10-5) C d. 0.851 N d. (7.65 x 10-5)C

A charge Q1 = +3 μC is located at (-5 cm, 0) while charge Q2 = -4 μC is located at (0, +5 cm). These are the two white charges in the diagram at right. a) What is the electric field at the origin (0, 0) due to these two charges? b) If a third charge of 5 μC (the gray charge) is placed at the point (-4 cm, 3 cm), what will now be the electric field at the origin?

Answer both parts