answer both a and b please

(8%) Problem 4: A positive oxygen-16 ion with a mass of 2.66 x 10-26 kg travels at 25 x 10 m/s perpendicular to a 2.50 T magnetic field, which makes it move in a circular path with a 0.332-m radius. Forbes, David - divid forbes @ doane .edu @theexpertta.com - tracking id: 9N69-72-B9-45-AB7A-36846. In accordance with Expert TA's Terms of Service, copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. D 4 50% Part (a) What is the charge of the ion, in coulombs? Grade Summary 9= 1 Deductions 0% Potential 100% sinQ cos tan( 7 8 9 HOME Submissions cotan() asinQ acos() 4 5 6 Attempts remaining: 1 (100% per attempt) atan acotan sinh() 2 3 detailed view cosh( tanh() cotanh + 0 END Degrees acotan () VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. 4 50% Part (b) What is the ratio of this charge to the magnitude of the electron's charge