The electric field near the surface of the earth points downward and has a magnitude of 60 N/C. Compare the upward electric force on an electron with the downward gravitational force; i.e., what is the ratio Fe Fg ? The elementary charge is 1.6 × 10−19 C and the mass of an electron is 9.11 × 10−31 kg. What is the magnitude of the charge that should be placed on a coin of mass 4.4 g so that the electric force balances the weight of the coin near the earth’s surface? Answer in units of C.
The electric field near the surface of the earth points downward and has a magnitude of 60 N/C. Compare the upward electric force on an electron with the downward gravitational force; i.e., what is the ratio Fe Fg ? The elementary charge is 1.6 × 10−19 C and the mass of an electron is 9.11 × 10−31 kg. What is the magnitude of the charge that should be placed on a coin of mass 4.4 g so that the electric force balances the weight of the coin near the earth’s surface? Answer in units of C.
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Question
The electric field near the surface of the earth
points downward and has a magnitude of
60 N/C.
Compare the upward electric force on an
electron with the downward gravitational
force; i.e., what is the ratio Fe
Fg
? The elementary charge is 1.6 × 10−19 C and the mass
of an electron is 9.11 × 10−31 kg.
What is the magnitude of the charge that
should be placed on a coin of mass 4.4 g so
that the electric force balances the weight of
the coin near the earth’s surface?
Answer in units of C.
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