Need help on how to find distance between electron and proton

  • Thread starter Thread starter ken19
  • Start date Start date
  • Tags Tags
    Electron Proton
Click For Summary
To find the distance between an electron and a proton in a single ionized Helium atom, the diameter of the atom is given as 0.95 x 10^-10 m, which indicates the distance from the center to the electron. Using Coulomb's law, the force between the electron and protons can be equated to the centripetal force required for circular motion. The equations provided, Fe = K*q1*q2/d^2 and F = mv^2/R, can be used to derive the electron's speed in its orbit. The challenge lies in calculating the speed without direct values for distance or time, but understanding the definitions of atomic radius and centripetal force is crucial. This approach will allow for the determination of the electron's velocity in relation to the protons at the center of the atom.
ken19
Messages
1
Reaction score
0
1. According to the "Solar model" of a single ionized Helium atom has one electron revolving in a circular orbit around a stationary nucleus made of two protons and two newtrons. The diameter of this atom is .95*10^-10m. Use Coulomb's law and calculate the speed of the electron (m/s) in its orbit.

2. Homework Equations
Fe=K*q1*q2/d2 where k=8.99*10^9 Nm^2/s^2.
v=d/t

3. The Attempt at a Solution .
How do I go about solving this question when either of distance or time is given? Any help is appreciated.
 
Physics news on Phys.org
consider the protons as in the center of the atom.
the definition of atomic radius is the distance from the center of the atom to its farther electron.
so use the definition of centripetal force and you will get the velocity of the electron.
[;F=\frac{mv^2}{R};]
and [;F=\frac{K.Q_1.Q_2}{R^2};]
 

Thread 'Magnitude of buoyant force in fluids of different densities'

The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?
View full post »

Similar threads

The time for a proton to reach a certain velocity
  • · Replies 4 ·
Replies
4
Views
2K
What is the correct velocity of an electron in a bound orbit around a proton?
  • · Replies 2 ·
Replies
2
Views
2K
Solve Columb's Law Problem: Helium Nucleus & Proton Acceleration
  • · Replies 1 ·
Replies
1
Views
1K
How Much Energy is Released When a Uranium Nucleus Captures an Electron?
  • · Replies 3 ·
Replies
3
Views
2K
Find the drift speed of electrons in a wire
  • · Replies 2 ·
Replies
2
Views
2K
Electrons and their little role in nuclear physics
  • · Replies 1 ·
Replies
1
Views
2K
How to calculate the Coulomb barrier between a proton and a lithium nucleus
  • · Replies 9 ·
Replies
9
Views
3K
Find the electric field on a proton by an electron
  • · Replies 15 ·
Replies
15
Views
6K
Rotation period of electron orbiting a proton
  • · Replies 3 ·
Replies
3
Views
3K
The ratio of the gravitational force between electron and proton
  • · Replies 7 ·
Replies
7
Views
10K