4. In a uniform electric field near the surface of the Earth, a particle having a charge of - 2.0× 10-° C is acted on by a downward electric force of 3.0× 10-“ N. (a) Find the mag- nitude of the electric field. (b) What is the magnitude and direction of the electric force exerted on a proton placed in this field? (c) What is the gravitational force on the proton? (d) What is the ratio of the electric force to the gravitational force in this case?

4. In a uniform electric field near the surface of the Earth, a particle having a charge of - 2.0× 10-° C is acted on by a downward electric force of 3.0× 10-“ N. (a) Find the mag- nitude of the electric field. (b) What is the magnitude and direction of the electric force exerted on a proton placed in this field? (c) What is the gravitational force on the proton? (d) What is the ratio of the electric force to the gravitational force in this case?

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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