At about what kinetic energy (in eV) can the rest energy of a proton be ignored when calculating its

At about what kinetic energy (in eV) can
the rest energy of a proton be ignored when calculating its wavelength, if the
wavelength is to be within of its true value? What are the corresponding
wavelength and speed of the proton?

Using the information in Section 32–1,
show that the Large Hadron Collider’s two colliding proton beams can resolve
details that are less than 1/10,000 the size of a nucleus.