2. A point charge is placed at each corner of a square with side length a. All charges havemagnitude q. Two of the charges are positive and two are negative (Fig. A1.2). What isthe direction of the net electric field at the center of the square due to the four charges,and what is its magnitude in terms of q and a?b.+qaab.Figure A1.23. Adjacent antinodes of a standing wave on a string are 15.0 cm apart. A particle at anantinode oscillates in simple harmonic motion with amplitude 0.850 cm and period0.0750 s. The string lies along the + x-axis and is fixed at x =the adjacent nodes? (b) What are the wavelength, amplitude, and speed of the twotraveling waves that form this pattern? (c) Find the maximum and minimum transversespeeds of a point at an antinode. (d) What is the shortest distance along the string0. (a) How far apart arebetween a node and an antinode?

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A point charge is placed at each corner of a square with side length a. All charges have magnitude q. Two of the charges are positive and two are negative (Fig. A1.2). What is the direction of the net electric field at the center of the square due to the four charges, and what is its magnitude in terms of q and a?

A point charge is placed at each corner of a square with side length a. All charges have magnitude q. Two of the charges are positive and two are negative (Fig. A1.2). What is the direction of the net electric field at the center of the square due to the four charges, and what is its magnitude in terms of q and a?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter24: Electromagnetic Waves

Section: Chapter Questions

Problem 28P

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