Ametal plate has a binding energy of 350.0 kj/mol. if a photon with a wavelength of 275 nm strikes the surface, at what velocity will an electron be ejected?

(Not my work) Progressive America was a turbulent world in which greed and corruption ruled. In this context many middle-class reformers came together to make the US a better place. While many historians would argue that the Progressive Movement was highly successful in combating the injustices of their time, the evidence will demonstrate that they fell short of meeting their own reform goals.