Hi,(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

In a simple model of the hydrogen atom, the electron moves in a circular orbit of radius 0.053 nm around a stationary proton. How many revolutions per second does the electron make?

2. Relevant equations

F = (kq1q2)/r^2 = (mv^2)/r

v = wr

3. The attempt at a solution

Charge of electron = -1.602 x 10^-19 C

Charge of proton = 1.602 x 10^-19 C

Mass of electron = 9.109 x 10^-31 kg

[(8.999 x 10^9)(1.602 x 10^-19)(1.602 x 10^-19)] / (0.053 x 10^-9) = (mv^2)/r

v = 0.002187 m/s

v = wr

0.002187 = w(0.053 x 10^-9)

w = 41267720.67

Any ideas on what I am doing wrong? Thanks!

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electricity and revolutions per second

**Physics Forums | Science Articles, Homework Help, Discussion**