(a) Find the kinetic energy (in eV) of an electron whose de Broglie wavelength is equal to 0.5 Å = 0.05 nm, a typical atomic size.

(b) If the wavelength of the electron is reduced to 10^–15 m, a typical nuclear size, is its kinetic energy greater than, less than, or equal to the value found in part (a)? Explain.