Recent content by rreedde

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    Calculating the closest possible distance of approach

    Homework Statement An alpha particle 4 2 He 2+ approaches a stationary gold nucleus 197 79 Au at a speed of 7.0 X 10^6 ms-1. By considering only electrostatic repulsion, calculate the closest possible distance of apporach between the alpha particle and gold nucleus. Homework Equations -The...
  2. R

    Electric potential along the centre line between 2 charged plates

    Homework Statement Explain why in the absence of any other charged bodies, the potential will be zero along the centre line between plates Homework Equations - The Attempt at a Solution not sure how to explain it. is this because that the electric field in that region is zero?
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    Finding the inverse of a modulus function

    Homework Statement Find the inverse of y=|x-4| Homework Equations - The Attempt at a Solution i tried y+4=|x| replacing y with x, x+4= |y| and I am quite stuck because of the modulus sign. do i go on with x+4=y or -x-4=y?