Moon exchange particle

  • #1

Homework Statement


If an exchange particle held the moon together, what would the mass of the exchange particle be?
Moon radius = 1737 km

Homework Equations


Well, I know that the range of an exchange particle is as follows: [itex]R=\frac{\hbar}{2mc}[/itex] where m is the mass of the exchange particle and c is speed of light, hbar is 1.054e-34.

The Attempt at a Solution


I do not fully understand what a range is....how can I apply a range to this problem? If I could figure that out, i think I would be able to figure the problem out
 

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