Chapter 25, Problem 4CQ

Two protons are launched with the same speed from point I inside

the parallel-plate capacitor of FIGURE Q25.4. Points 2 and 3 are the

same distance from the negative plate.

a. Is $△U_{1\to 2}$ , the change in potential energy along the path

$1\to 2$ , larger than, smaller than, or equal to $△U_{1\to 3}$ ?

b. Is the proton's speed at $v_2$ point 2 larger than, smaller than, or

equal to $v_3$ ? Explain.

FIGURE 025.4