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Please help me to solve this exercise:

Magnetic Resonance

2-Consider, the application of a pulse π or 180°C that rotates the magnetization, so that at the end of the pulse application

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of ongular momentum are a system钌aguo/ rto The rate of chanse of the코 =nd r:@ heret z nuclear mefhetic moment ˋ麒工드 nuclew anpΣ风ー田 fhe upper and lower tere , m.ct) , N.- relasat1om time@ e9. , wも ㄒ Ar wrol

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