(a) Verify from its quark composition that the + particle could be an excited state of...

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(a) Verify from its quark composition that the Δ+ particle could be an excited state of the proton. 

(b) There is a spread of about 100 MeV in the decay energy of the Δ+, interpreted as uncertainty due to its short lifetime. What is its approximate lifetime? 

(c) Does its decay proceed via the strong or weak force?

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