Question 18 (2 points) An experiment is designed to study the charge to mass ratio of hydrogen ions. Hydrogen ions, all moving in the same direction and with the same speed are injected into a mass spectrometer. The magnitude of the magnetic field is varied and the resulting radii of the path of the hydrogen is measured. a) Derive an Quation that describes the radius of the curvature of an ions path. b) Sketch a graph showing the relationship between the radius of the curvature of a hydrogen ion's path and the strength of the magnetic field. |||| ( ov I: + ( MI in. Paragraph V B I Q V A] Z: V Question 19 (2 points) A charged particle moving from right to left enters a magnetic field which flows into the page. If the resulting motion is a counterclockwise circle: a) Draw a diagram illustrating this situation. b) What is the charge on the particle. Paragraph V B I U V A] Z: V II\"