A buckey ball is a large molecule comprised of 60 carbon atoms arranged in a shape something like a hollow sphare 0.71nm in diameter. Imagine that we create a beam of bockeyballs all moving at the same speed v. what is the maximum value that v can have if the de Broglie wavelength of the buckeyball beam is to be at least 10 times the size of the buckeyball (so that we might actually be able to display interference of the buckballs) ?