physics

posted by .

An electron and a proton have charges of an equal magnitude but opposite sign of 1.6 10-19 C. If the electron and proton in a hydrogen atom are separated by a distance of 5.4 10-11 m, what are the magnitude and direction of the electrostatic force exerted on the electron by the proton?

I don't really understand Coulomb's Law... HELP!!

• physics -

• physics -

F=k*q1*q2/r^2
k= 8.99^9
q1= 1.6^-19
q2= -1.6^-19
r^2= 5.4^-11
am i even close?

• physics -

the ^ should be e sorry...

• physics -

That is correct, however, you have to square r.

• physics -

So is -7.89e-8 my answer? Sorry I only have one more time to put it in my homework and I want to make sure I got it right this time!

Similar Questions

2. Physics

Could someone help me on how to put this all together. Atomic physicists ignore the effect of gravity within an atom. To see why, calculate and compare the gravitational and electrical forces between an electron and a proton separated …
3. Physics

The hydrogen atom contains a proton, mass 1.67 10-27 kg, and an electron, mass 9.11 10-31 kg. The average distance between them is 5.3 10-11 m. The charge of the proton is the same size, opposite sign of the electron. a)What is the …
4. physics

On average, the electron and proton in a hydrogen atom are separated by a distance of (5.3 x 10 -11 m), assuming the orbit of the electron to be circular, (a) what is the electric force on the electron?
5. Physics

A hydrogen atom consists of a positively charged proton (nucleus) and a negatively charged electron. The following is correct due to Coulomb's law: a.The two particles repel each other b.The electron accelerates toward the proton c.The …
6. physics

A proton and an electron in a hydrogen atom are separated by a distance of 5.3 x 10-11 m. The magnitude and direction of electric field set up by the proton at the position of the electron is: a. 5.1 x1011 N/C away from the proton …
7. Physics

A hydrogen atom is at the earth's surface. The electron and proton in the atom are separated by a distance of 5.29x10^-11m. What is the ratio of the magnitude of the electrical force exerted by the proton on the electron to the weight …
8. physics

In the Bohr model of the hydrogen atom, an electon mass= 9.11 x 10^-31 kg orbits a proton at a radius of 5.29 x 10^-11 m. The proton pulls on the electron with a force of 8.20 x 10^-8N. what is the speed of the electron?
9. Physics

In the hydrogen atom, the distance between the electron and the proton is 5x10^-11m. a)Compute the magnitude of the gravitational force FG between the electron and the proton b)Compute the magnitude of the electrical force FE between …
10. physics

An electron and a proton have charges of opposite sign, but the magnitude of their charges has the same value of 1.60 10-19 C. Suppose the electron and proton in a hydrogen atom are separated by a distance of 4.30 10-11 m. What are …

More Similar Questions