The characteristic length of entities in Superstring theory is approximately 10-35 m .  (a) Find the energy in GeV of a photon of this wavelength. (b) Compare this with the average particle energy of 1019 GeV needed for unification of forces.

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Chapter7: Quantum Mechanics
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Problem 35P: Some unstable elementary particle has a rest energy of 80.41 GeV and an uncertainty in rest energy...
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The characteristic length of entities in Superstring theory is approximately 10-35 m . 

(a) Find the energy in GeV of a photon of this wavelength.

(b) Compare this with the average particle energy of 1019 GeV needed for unification of forces.

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