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Answer this if you know your physics?

  1. Dec 19, 2008 #1

    Ian

    User Avatar

    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)
     
  2. jcsd
  3. Dec 19, 2008 #2

    Ian

    User Avatar

    Sorry, I posted this twice in error.
     
  4. Dec 20, 2008 #3

    I'm thinking Planck units here. But since your selection of proton and sun is purely arbitrary and the two aren't fundamentally related in any way, I could pick the density of any two objects and come up with the same ratio if I wanted to and ask the same question you're asking so I think your question is faulty
     
  5. Dec 20, 2008 #4
    Q11. The number of fingers on my hands
    (10)
    Q12. The number of even primes (1)
    (1)
    Q13. Divide the 39th power of the eleventh answer by the 39th power of the twelfth answer.
    (1039)
    Q14. Why is the answer to Q13 the same order as the answers to Q7, Q8 & Q9?
    A14. Because I ignored units in the ratio as did the OP in the answer to Q8.
     
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