College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter 21, Problem 9CQ

Figure Q21.9 shows two points inside a capacitor. Let V = 0 V at the negative plate.

Figure Q21.9

Chapter 21, Problem 9CQ, Figure Q21.9 shows two points inside a capacitor. Let V = 0 V at the negative plate. Figure Q21.9 A.

A. What is the ratio V₂/V₁ of the electric potential at these two points? Explain.

B. What is the ratio E₂/E₁ of the electric field strength at these two points? Explain.

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Chapter 21, Problem 8CQ

Chapter 21, Problem 10CQ

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Part C Find the height yi from which the rock was launched. Express your answer in meters to three significant figures. Learning Goal: To practice Problem-Solving Strategy 4.1 for projectile motion problems. A rock thrown with speed 12.0 m/s and launch angle 30.0 ∘ (above the horizontal) travels a horizontal distance of d = 19.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.800 m/s2 for the free-fall acceleration. PROBLEM-SOLVING STRATEGY 4.1 Projectile motion problems MODEL: Is it reasonable to ignore air resistance? If so, use the projectile motion model. VISUALIZE: Establish a coordinate system with the x-axis horizontal and the y-axis vertical. Define symbols and identify what the problem is trying to find. For a launch at angle θ, the initial velocity components are vix=v0cosθ and viy=v0sinθ. SOLVE: The acceleration is known: ax=0 and ay=−g. Thus, the problem becomes one of…

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Chapter 21 Solutions

College Physics: A Strategic Approach (3rd Edition)

Ch. 21 - By moving a 10 nC charge from point A to point B,...Ch. 21 - Charge q is fired through a small hole in the...Ch. 21 - Why is the potential energy of two opposite...Ch. 21 - An electron (q = e) completes half of a circular...Ch. 21 - An electron moves along the trajectory from i to f...Ch. 21 - The graph in Figure Q21.61Q shows the electric...Ch. 21 - As shown in Figure Q21.7, two protons are launched...Ch. 21 - Each part of Figure Q21.8 shows one or more point...Ch. 21 - Figure Q21.9 shows two points inside a capacitor....Ch. 21 - A capacitor with plates separated by distanced is...

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Figure Q21.9 shows two points inside a capacitor. Let V = 0 V at the negative plate. Figure Q21.9 A. What is the ratio V 2 / V 1 of the electric potential at these two points? Explain. B. What is the ratio E 2 / E 1 of the electric field strength at these two points? Explain.

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