No-one knows the answer to the tenth question ('cept me)

[Ian]

Q1. What is the magnitude of the electric force between a proton & electron?
(8.238x10^-8 N)
Q2,What is the magnitude of the gravitational force between a proton & electron?
(3.63x10^-47 N)
Q3.What is the magnitude of the velocity of light?
(299792458 m s^-1)
Q4.What is the magnitude of the permitivity of a vacuum?
(8.854x10^-12 m^-2 s^-2)
Q5. Estimate the density of a proton
(1.78x10¹⁶kg m^-3)
Q6. Estimate the density of the sun
(1405 kg m^-3)

Q7. Divide answer 1 by answer 2.
(2x10³⁹)
Q8. Divide the square of the third answer by the square of the fourth answer.
(1x10³⁹)
Q9. Divide the cube of the fifth answer by the cube of the sixth answer
(2x10³⁹)
Q10. Why are the answers to Q7, Q8 & Q9 of the same order?
(Gotcha)

 

[K Sengupta]

I am interested to know the solution, but cannot solve this problem on my own since I am not an expert in physics.

In my opinion, this problem is likely to elicit a much better response if this is resubmitted in other subforums like: General Physics, Classical physics, etc.

 

[Kittel Knight]

Is this a brain teaser?