Recent content by john54

  1. J

    How to Calculate the Maximum Energy of Ejected Electrons?

    If it is not too late... The max k.e. should be 8 eV
  2. J

    Grasping the Basics of Newtonian Physics: A Quick Review

    6a 7b 8b 9c 10b I think you are not familiar with the g-r graph. Try studying it and you'll find it helpful in solving a lot of problems.
  3. J

    Library Store Scanners: Info & How They Work

    Me too. I've searched google and find it difficult to get answers to the following questions. Would anyone kindly answer them here? 1. What kind of waves (?) is received by the receiver? 2. How can the receiver identify the theft regardless of the orientation of the tape? thank you...
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