A charged cloud system produces an electric field in the airnear Earth\'s surfac

Question

A charged cloud system produces an electric field in the airnear Earth's surface. A particle of charge -1.6 x 10-9 Cis acted on by a downward electrostatic force of 4.5 x10-6 N when placed in this field. (a)What is the magnitude of the electric field? (b)What is the magnitude of the electrostatic force on a proton placedin this field? (c) What is the gravitational forceon the proton? (d) What is the ratio of theelectrostatic force to the gravitational force in this case? Help please! Much Thanks A charged cloud system produces an electric field in the airnear Earth's surface. A particle of charge -1.6 x 10-9 Cis acted on by a downward electrostatic force of 4.5 x10-6 N when placed in this field. (a)What is the magnitude of the electric field? (b)What is the magnitude of the electrostatic force on a proton placedin this field? (c) What is the gravitational forceon the proton? (d) What is the ratio of theelectrostatic force to the gravitational force in this case? Help please! Much Thanks

Explanation / Answer

a) electric field : E = F/q = 2812.5 N/m b) the force on proton : Fp = E*e = 4.5x10^-16 N c) gravitaion force : Fg = mg = 1.6366x10^-26 N d) the ratio : Fp/Fg = 2.75x10^10

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