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  1. F

    Spring mechanics with 2 different masses

    Homework Statement Two masses m and 3m are joined together by a compressed massless spring of constant k = 750 N/m. When spring is released it pushes masses apart and they slide on a horizontal tabletop as shown below. Mass 3m slides to the right and its track is frictionless. Mass m slides to...
  2. F

    Static electricity and electrons

    Homework Statement Initially electron moves through a horizontal electric field that accelerates electron. Then electron enters a uniform electric field between two parallel plates. velocity of the electron is horizontal and it lies exactly on the middle line between the plates. This field...
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