Question

The mass of an electron is 9.109 × 10^−31 kg, and the magnitude of the charge of an electron is 1.602 × 10^−19 C. What is the ratio of the gravitational force to the electrostatic force between two electrons? 4.165 × 10^42. 2.390 × 10^−43. 3.093 × 10^22. 3.233 × 10^−23

          The mass of an electron is 9.109 × 10^−31 kg, and the magnitude of the charge of an electron is 1.602 × 10^−19 C. What is the ratio of the gravitational force to the electrostatic force between two electrons?
4.165 × 10^42.
2.390 × 10^−43.
3.093 × 10^22.
3.233 × 10^−23
        
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Added by Russell S.

University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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The mass of an electron is 9.109 × 10^−31 kg, and the magnitude of the charge of an electron is 1.602 × 10^−19 C. What is the ratio of the gravitational force to the electrostatic force between two electrons? 4.165 × 10^42. 2.390 × 10^−43. 3.093 × 10^22. 3.233 × 10^−23
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Transcript

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00:01 We are given here mass of the electron so we can write mass of electron which is equal we can write m .e which is equal to 9 .109 multiplata we can write 10 to minus 31 10 to minus 31 kilogram so the magnitude of the charge of an electron so here we talk about magnitude of charge magnitude of charge of electron magnitude of the charge of the charge of an electron of electron is so here we can write the charge of electron qe which is equal we can write 1 .206 multiple we can write 10 to minus 90 where the answer is in the column now we want to find the ratio between gravitational force here we want to find ratio between the gravitation force divided by we can write of the electrostatic force electrostatic force for this question because here we want to find the only ratio so we can write two forces the electrostatic force to gravitation force is equal to we know that it is an g and the electric static force f a f is equal to we can write here the charge qe multiple we can write here electricity force now we just think that if these two forces are same so you can write md which is equal to f e so here we can write the ratio here so we can write m g which is equal we can write q means multiply by e here so we just we just substitute value into this formula so here we can write not same we cannot save here we cannot say the same we just suppose the same so we can write mg divided by f a which is equal we can write mj divided by we can write the value…
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