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The negative part of a water molecule is the oxygen atom and the positive parts are...

  1. The negative part of a water molecule is the oxygen atom and the positive parts are the hydrogen atoms. The energy of a water molecule in an upward pointing electric field is

lowest when

  1. the oxygen atom lies above the hydrogen atoms.
  2. the hydrogen atoms lie above the oxygen atom.
  3. the height of the oxygen atoms is between the heights of the hydrogen atoms.
  4. the three atoms lie in a horizontal plane.
  1. An electron positron pair dipole has a separation of 7.9X10-10 m . In an external electric field of 2.4X105 N/C k find the energy of the dipole when the dipole is oriented A) the positron on top and B) the electron on top.
  1. A conducting sphere of radius 1.0 meter and net charge 1.0 millicoulomb is centered at the origin. Find the electric field at the points 50 cm i and 200 cm j .

  1. A long cylindrical conductor with its center lying along the z axis has a radius R of 1.0 centimeter and a linear charge density λ of 1 1 millicoulomb per meter. Find the electric field at the position (3.0m,4.0m,0.0m) .
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