physics

an electron and a proton are initially very far apart (effectively an infinite distance apart.) they are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.29 x 10 -11 m. what is EPE final - EPE initial, which is the change in the electric potential energy?

  1. 👍 0
  2. 👎 0
  3. 👁 140
asked by lara
  1. The electrical potential energy is a negative number,
    -k e^2/a

    where a is the orbit radius (which you have been given), e is the electron (and proton) charge, and k is the Coulomb's Law constant.

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.40 10-11

    asked by abby on February 1, 2013
  2. physics

    An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.11 10-11m.

    asked by rick on January 30, 2008
  3. AP PHYSICS

    An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of

    asked by Becky on March 26, 2008
  4. physics

    An electron is projected, with an initial speed of vi=1.38e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its

    asked by x on March 4, 2013
  5. Physics

    An electron is projected, with an initial speed of vi=2.06e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its

    asked by P on March 5, 2013
  6. Physics

    An electron is projected, with an initial speed of v= 2.18e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its

    asked by Phy on March 2, 2013
  7. Physics

    An electron is projected, with an initial speed of vi=1.10e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its

    asked by bethel on February 28, 2013
  8. physics

    A proton and an electron in a hydrogen atom are separated by a distance of 5.3 x 10-11 m. The magnitude and direction of electric field set up by the proton at the position of the electron is: a. 5.1 x1011 N/C away from the proton

    asked by ashley --- HELP PLEASEE!!! on May 14, 2011
  9. Physics

    If the mass of a proton is 1.67×10^-27kg and the mass of an electron is 9.11×10^-31kg.Calculate the force of gravitation between;(1) A proton and an electron (2) Two electrons (3) Two protons.Take G=6.67×10^-11Nm^2kg^-2,

    asked by Cherish on August 24, 2018
  10. physics

    An electron and a proton have charges of an equal magnitude but opposite sign of 1.6 10-19 C. If the electron and proton in a hydrogen atom are separated by a distance of 5.4 10-11 m, what are the magnitude and direction of the

    asked by kkpdiluvu on July 24, 2012

More Similar Questions