In an x-ray tube,high-speed electrons are slammed into a lead target,giving off x-rays.If the electrons are accelerated from rest through a potential difference of 50 000 volts,what speed do they have when they strike the target? (q_e = 1.6 x 10^-19 C,m_e = 9.11 x 10^-31 kg,and c = 3.00 x 10⁸ m/s) A)0.17 c B)0.41 c C)0.83 c D)0.91 c

Question

Quizplus · Accepted Answer

The kinetic energy gained by the electron is equal to the electric potential energy, which is qV. Using the equation KE = 0.5 * m * v^2 = q * V, we can solve for v. Substituting the given values, v = sqrt((2 * 1.6 x 10^-19 C * 50,000 V) / (9.11 x 10^-31 kg)) ≈ 0.41c.

In an X-Ray Tube,high-Speed Electrons Are Slammed into a Lead