Homework Help

A strong lightning bolt transfers about 25 C to Earth. Calculate the amount of mass...

user profile pic

andrewmezzo | Student, College Freshman | (Level 1) Valedictorian

Posted January 31, 2013 at 5:19 AM via web

dislike 2 like

A strong lightning bolt transfers about 25 C to Earth. Calculate the amount of mass transferred to the Earth.

1 Answer | Add Yours

user profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted January 31, 2013 at 5:51 AM (Answer #1)

dislike 2 like

The bolt of lightning transfers a charge equal to 25 C to the Earth. An electric charge is expressed in Coulombs (C). It is negatively charged particles or electrons that move when a current travels though this is equivalent to a positive charge moving in the opposite direction. Each electron has a charge of -1.609*10^-19 C. The negative sign indicates that electrons are negatively charged. The mass of an electron is 9.109*10^-31 kg.

To determine the mass of electrons that are transfered to the Earth use the electric charge and mass of an electron. 25 C is equivalent to 25 C is `25/(1.602*10^-19) = 1.56*10^20` electrons. The mass of these electrons is equal to `1.56*10^20*9.109*10^-31 = 1.42*10^-10` kg.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes