Question

In a hydrogen atom, the electron in orbit
around the proton feels an attractive force of
about 7.66 × 10−8 N.
If the radius of the orbit is 5.26 × 10−11 m,
what is the frequency?
Answer in units of rev/s

Answer 1

Still need this answered?

Answer 2

Yes

Answer 3

Are you aware of the centripetal force equation?

Answer 4

Yes I am but whenever I attempt to complete it I am given a negative exponent that leads to me getting the wrong answer.

Answer 5

Which equation are you using?

Answer 6

I apologize. I come upon the negative exponent when trying to find the velocity, this is where my problems stem from

Answer 7

F = mv^2/r

Answer 8

Ok and in order to find the frequecy I need to find the velocity so I change the equation to v=√F*r/m correct?

Answer 9

yup

Answer 10

but you need rev/s. To get that, you multiply velocity by the radius

Answer 11

velocity times radius gives you radians per second

Answer 12

and there are 2pi radians per revolution

Answer 13

Got it?

Answer 14

Oh yea I get that part but what I'm saying is when i calculate to get the velocity I get a negative exponent which makes everything else void you get what I'm saying? Idk what I'm doing wrong I dont want to blame it on the calculator that I'm using but I've broke the equation down and calculated as well as calculated all at once

Answer 15

a negative exponent simply means the velocity would be really small. do you want me to show the work?

Answer 16

I thought velocity couldn't be negative? Yes, please

Answer 17

Unless i got it confused with something else, either way the outcome never comes out right

Answer 18

Any luck?