A proton has an initial speed of 3.9×105 m/s.

What potential difference is required to bring the proton to rest?

What potential difference is required to reduce the initial speed of the proton by a factor of 2?

What potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2?

1 answer

Figure initial kinetic energy (1/2) m v^2
(ok because speed well below that of light)

volts * charge = energy = (1/2) m v^2

I guess you can divide v by two and v^2 by 2
Similar Questions
  1. A proton has an initial speed of 3.9×105 m/s.What potential difference is required to bring the proton to rest? What potential
    1. answers icon 0 answers
    1. answers icon 0 answers
  2. Problem 21.10A proton with an initial speed of 800000 m/s2 is brought to rest by an electric field. Part B - What was the
    1. answers icon 0 answers
  3. Problem 21.10A proton with an initial speed of 800000 m/s is brought to rest by an electric field. Part B - What was the
    1. answers icon 0 answers
more similar questions