the y-axis, and its plane makes an angle of 34 q B with the r-axis. 5. T- Im B A uniform magnetic field of 0.87 T is di- rected along the r-axis and the current in the 2 71 m loop is 6.7 A in the direction shown. 6. T q B Question 17 y 1 0.55 m part 1 of 1 10 points B = 0.87 T Two species of singly charged positive ions of masses 9.6 x 10 kg and 3.3 x 10 26 kg 0.15 m - 6.7 A enter a magnetic field at the same location with a speed of 130000 m/s. B = 0.87 T The charge on the ion is 1.60218 x 10 19 C. 340 If the strength of the field is 0.26 T, and they move perpendicularly to the field, find What is the magnitude of the torque ex- their distance of separation after they com- plete one half of their circular path. erted on the loop? Answer in units of N . m. Answer in units of cm. Question 16 Question 18 part 1 of 1 10 points part 1 of 1 10 points A particle with charge q and mass m is un- A solenoid 67 cm long has 710 turns and a dergoing circular motion with speed v. At radius of 3.22 cm. t = 0, the particle is moving along the nega- If it carries a current of 3.9 A, find the tive x axis in the plane perpendicular to the magnetic field along the axis at its center. magnetic field B, which points in the positive Answer in units of T. z direction in the figure below. O OB O OTO O O O O Find the period T of oscillation; i.e., the time it takes for the particle to complete one revolution. 1. T = 27 m B 9 2. T = 27- m 3. T = q B m