College Physics
7th Edition
ISBN: 9780321601834
Author: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
Publisher: Addison-Wesley
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Chapter 19, Problem 10E
The enlarged circular inset in Fig.19.11 shows how the positive sodium (Na+) ions in seawater are accelerated out the rear of the submarine to provide a propulsive force. But what about the negative chlorine (Cl-) ions in the seawater? Because they have charge of the opposite sign, aren't they accelerated forward, resulting in a net force of zero on the submarine? Explain.
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- An infinite line of positive charge lies along the y axis, with charge density = 2.00 C/m. A dipole is placed with its center along the x axis at x = 25.0 cm. The dipole consists of two charges 10.0 C separated by 2.00 cm. The axis of the dipole makes an angle of 35.0 with the x axis, and the positive charge is farther from the line of charge than the negative charge. Find the net force exerted on the dipole.arrow_forwardSuppose a woman carries an excess charge. To maintain her charged status can she he standing on just any pair of shoes? How would you discharge her? What are the consequences if she simply walks away?arrow_forwardHow many coulombs of positive charge are there in 4.00 kg of plutonium given its atomic mass is 244 and that each plutonium atom has 94 protons?arrow_forward
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