College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:**Physics Problem on Electric Potential and Work Done**
**Description:**
This problem involves calculating electric potential and work related to charges positioned in a coordinate system.
**Problem Statement:**
1. **Charge \( q_1 = 2.5 \, \mu C\) is located at the coordinate system origin.**
- Charge \( q_2 = 1 \, \mu C\) is placed at \((a, 0)\) where \( a = 1.85 \, \text{m} \). The point \( P \) is located at \((0, a)\).
- A third charge \( q_3 = 3.5 \, \mu C\) will be placed later.
**Diagram Explanation:**
- There is a coordinate system with \( q_1 \) at the origin \((0, 0)\).
- \( q_2 \) is on the x-axis at position \((a, 0)\).
- Point \( P \) is on the y-axis at position \((0, a)\).
**Tasks:**
(a) **Find the electric potential \( V_p \) at point \( P \) in volts.** Assume the potential is zero at infinity.
- Equation: \( V_p = \)
(b) **Determine how much work \( W_i \), in joules,** would you need to do to bring the third charge \( q_3 \) from very far away to the point \( P \).
- Equation: \( W_i = \)
(c) **Calculate the total potential energy \( U \) (in joules)** of the final configuration of the three charges.
- Equation: \( U = \)
**Instructions for Solving:**
- Use the formula for electric potential, \( V = \frac{k \cdot q}{r} \), where \( k = 8.99 \times 10^9 \, \text{N m}^2/\text{C}^2 \).
- Calculate the potential contributions from each charge at point \( P \) and sum them.
- Use the work-energy principle to find the work done in bringing charge \( q_3 \) to point \( P \).
- Determine the total potential energy by considering pairwise interactions.
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