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Multiple-Concept Example 4 deals with the concepts that are important in this problem. As illustrated in Figure 19.5b, a negatively charged particle is released from rest at point B and accelerates until it reaches point A. The mass and charge of the particle are 4.0 × 10-6 kg and 22.0 × 10-5 C, respectively. Only the gravitational force and the electrostatic force act on the particle, which moves on a horizontal straight line without rotating. The electric potential at A is 36 V greater than that at B; in other words, VA - VB = 36 V. What is the translational speed of the particle at point A? |
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