I Spin spin coupling problem an electron/positron system

Hayam ramadan
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I am unable to solve this problem ... I found that chegg website has a solution but I dont have a credit card to pay ... i have exam by tmrw
Can anyone please help me out?
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Hayam ramadan said:
Can anyone please help me out?
Not in this forum. If you want help on a homework problem, you will need to post your question in the relevant homework forum. Also you will need to fill out the homework template, which requires you to post the relevant equations (using the PF LaTeX feature, not an image) and your attempt at a solution.

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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!
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