Calculate the work function in eV for sodium metal given that the threshold wavelength is 6800A'
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The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.