What is the electric force of attraction (in Newtons) between a proton and an electon?

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What is the electric force of attraction (in Newtons) between a proton and an electon?

(assume the distance between them is 5x10 (-11)
meter, and the mass of electron is 9.1x10(-31) KG
a.1.2x10(-9)
b.2.5x10(-9)
c.8.0x10(-8)
d.9.1x10(-8)
e.16.3x10(-5)

2007-03-15 04:08:35 · 2 answers · asked by fran_tasha 1 in Science & Mathematics ➔ Chemistry

2 answers

Use Coulomb's law for this one

F = q1*q2 / (4*Pi*epsilon*r^2)

The proton and the electron have an equal and opposite charge of 1.6*10^-19 C.

2007-03-15 04:12:28 · answer #1 · answered by dudara 4 · 0⤊ 0⤋

The answer exactly is 9.207608 x 10^-8

So I would go for (D)

By the way, you do not need the mass of the particles to work out Electric Force.

2007-03-15 04:22:54 · answer #2 · answered by Doctor Q 6 · 0⤊ 0⤋