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In nuclear physics , Can you solve this Question . Please? A)) Alpha particles with an...

In nuclear physics , Can you solve this Question . Please?

A)) Alpha particles with an energy of E = 7.68 MeV incident on Gold nucleus and scattered at an angle thita= 450. Find
??/?Ω= [ ???2 / ??0ℏ2?2]2

; ? = 2?????(θ/2)   

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