An electron is accelerated toward a target. Find the minimum accelerating potential difference (magnitude) that would be required to produce an x-ray...

An electron is accelerated toward a target. Find the minimum accelerating potential difference (magnitude) that would be required to produce an x-ray with a wavelength of 0.0220 nm when the electron strikes the target. (Enter your answer in kV. Assume the electron is initially at rest before accelerating toward the target.)