$(2)$ In an electron microscope, the de Broglie wavelength of the electrons must be equal to $($or smaller than$)$ the diameter of the object that is being viewed. Suppose one is trying to observe a large, spherical molecule that is $10108$ m in diameter. What is the minimum kinetic energy $($in Joules$)$ the electrons must have? $[$Hint: Non$-$relativistic formulas apply.$]($a$)6\mathrm{.}61026($b$)4\mathrm{.}41051($c$)2\mathrm{.}41021($d$)1\mathrm{.}0108($e$)3\mathrm{.}6104$