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A radioactive isotope of cobalt emits a photon of wavelength 9.30 x 10 -12 m. The cobalt nucleus contains 27 protons and 33 neutrons. The

 A radioactive isotope of cobalt emits a photon of wavelength 9.30 x 10-12 m. The cobalt nucleus contains 27 protons and 33 neutrons. The cobalt nucleus is in a crystal containing 6.02 x 1017 identical atoms. Calculate the extremely slow recoil velocity of the cobalt crystal. (1.18 x 10-15 m/s bd)

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