Recent content by kristjan

  1. kristjan

    What Was the Initial Speed of the Proton in a Collision?

    Homework Statement The moving proton hits the second proton, which we consider to be stationary. In the moment of central strike gap between the protons is 10(-13)m. What was the initial speed of the moving proton? Proton mass is 1.67*10(-27)kg and charge 1.6*10(-19) C. Homework Equations...
  2. kristjan

    What is the thickness of the wall of a hollow iron sphere submerged in water?

    Homework Statement Hollow iron sphere is half submerged in water.Sphere has outer diameter of 10 cm. Calculate thickness of the wall , when the iron density is 7.9 g / m3. I get answer 0.11cm, book says that it is 0.22cm. Homework Equations [/B]The Attempt at a Solution First i found buoyant...