Ed some one please help

Most popular questions and responses by Ed some one please help
  1. magnets

    A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region

    asked on November 24, 2013
  2. Magnets

    A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region

    asked on November 23, 2013
  1. Magnets

    I calculated the same answer but somehow its wrong, I wonder why? Is there another formula to solve this?

    posted on November 24, 2013
  2. electromagnets

    .125 J is wrong answer. can you check lease. thanx

    posted on November 24, 2013