Chapter 22, Problem 70GP

CE A positively charged particle moves through a region with a uniform electric field pointing toward the top of the page and a uniform magnetic field pointing into the page. The particle can have one of the four velocities shown in Figure 22-55. (a) Rank the four possibilities in order of increasing magnitude of the net force (F₁, F₂, F₃, and F₄) the particle experiences. Indicate ties where appropriate. (b) Which of the four velocities could potentially result in zero net force?

Figure 22-55 Problem 70