In a hydrogen atom, proton and electron are separated by 5.29×1011m. Part A What

Question

In a hydrogen atom, proton and electron are separated by 5.29×1011m.

Part A

What's the gravitational force between the two particles?

Express your answer with the appropriate units.

I got this

3.471047N    and this was my response: Not quite. Check through your calculations; you may have made a rounding error or used the wrong number of significant figures.

3.471047N    and this was my response: Not quite. Check through your calculations; you may have made a rounding error or used the wrong number of significant figures.

Explanation / Answer

Gravitational force , F = G*mp*me / r2

G = Gravitational constant = 6.67*10-11 N m2 kg-2

mp = mass of proton = 1.6726*10-27 kg

me = mass of electron = 9.1*10-31 kg

r = distance = 5.29 *10-11m

so gravitational force will be:

F = 6.67*10-11 * 1.6726*10-27 * 9.1*10-31 / ( 5.29*10-11 )2

F = 3.63 *10-47 N

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