physics

posted by .

Point A is at a potential of +250 V, and point B is at a potential of -150 V. An á-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An á-particle starts from rest at A and accelerates toward B. When the á-particle arrives at B, what kinetic energy (in electron volts) does it have?

  • physics -

    The charge is 2e and the voltage change is 400 V. Multiply them together for the kinetic energy gain.

    You could also compute the final speed using the alpha particle mass, but they don't ask for that.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Science

    1. Which statement about subatomic particles is NOT true?
  2. Physics

    The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles (helium nuclei, each consisting of 2 protons and 2 neutrons). (a) What is the force between the two …
  3. physics

    Point A is at a potential of +220 V, and point B is at a potential of -140 V. An á-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An á-particle starts from rest at …
  4. science

    When a parent radioactive nucleus splits by ejecting an alpha particles (two protons and two netutrons), the remaining nucleus has ____ the original nucleus. a) two protons and two neutrons more than b) two protons more and two neutrons …
  5. Physics 112

    Point A is at a potential of +270 V, and point B is at a potential of -130 V. An α-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An α-particle starts from …
  6. physics

    Point A is at a potential of +240 V, and point B is at a potential of -160 V. An α-particle is a helium nucleus that contains two protons and two neutrons; the neutrons are electrically neutral. An α-particle starts from …
  7. physics

    The number of electrons that move about the nucleus of an electrically neutral atom is the same as the number of ____________________. A) protons in the nucleus.B) quarks in the nucleus.C) protons + neutrons in the nucleus.D) neutrons …
  8. physics

    The number of electrons that move about the nucleus of an electrically neutral atom is the same as the number of ____________________. A) protons in the nucleus.B) quarks in the nucleus.C) protons + neutrons in the nucleus.D) neutrons …
  9. physics

    A small particle has charge -4.20 and mass 1.10×10−4 . It moves from point , where the electric potential is = 250 , to point , where the electric potential = 740 is greater than the potential at point . The electric force is …
  10. Chemistry

    What is the maximum velocity (in m/s) acquired by an alpha particle when accelerated between two plates with a potential difference of 580.0 volts?

More Similar Questions