Magnitude of the gravitational force of attraction between the proton & electron

In summary, the question asks to find the magnitude of the electric force of attraction between a single proton and a single electron fixed at a distance of 2.8 meters. The answer to this is 2.93*10^-29. Then, the question also asks to find the magnitude of the gravitational force of attraction between the proton and electron, with the given masses of each. To do this, the formula F = GMm/r2 is used, with G being the gravitational constant 6.67 * 10^-11.
  • #1
ali13
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Homework Statement



A single proton and a single electron are fixed at a distance of 2.8 meters from each other. Find the magnitude of the electric force of attraction between them.

i have the answer to this, it is: 2.93*10^-29

but now it asks: Find the magnitude of the gravitational force of attraction between the proton and the electron. (Mass of a proton = 1.67 x 10-27 kg; Mass of an electron = 9.11 x 10-31 kg)

i'm not sure where to put gravity, 6.67 * 10^-11, in the equation:

F=k*Q*q/r2

thank you!
 
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welcome to pf!

hi ali13! welcome to pf! :smile:

(try using the X2 icon just above the Reply box :wink:)
ali13 said:
i'm not sure where to put gravity, 6.67 * 10^-11, in the equation:

F=k*Q*q/r2

F = GMm/r2 :wink:
 

1. What is the magnitude of the gravitational force of attraction between a proton and an electron?

The magnitude of the gravitational force of attraction between a proton and an electron is approximately 8.99 x 10^9 Nm^2/kg^2.

2. How does the distance between a proton and an electron affect the magnitude of the gravitational force of attraction?

The magnitude of the gravitational force of attraction between a proton and an electron is inversely proportional to the square of the distance between them. This means that as the distance increases, the force decreases and vice versa.

3. Does the mass of the proton or electron have an impact on the magnitude of the gravitational force of attraction?

Yes, the magnitude of the gravitational force of attraction is directly proportional to the product of the masses of the proton and electron. This means that as the mass of either particle increases, the force also increases.

4. How does the gravitational force of attraction compare to other fundamental forces in nature?

The gravitational force of attraction between a proton and an electron is the weakest of the four fundamental forces in nature, which also include the strong nuclear force, weak nuclear force, and electromagnetic force.

5. Is the magnitude of the gravitational force of attraction constant or does it change over time?

The magnitude of the gravitational force of attraction between a proton and an electron is a constant value and does not change over time, unless there is a change in the distance or mass of the particles.

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