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What is true about valence electrons? They are those electrons that are closest to the nucleus They are those electrons that are neutrally charged They are those electrons that are found in the nucleus They are those electrons
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Electrons are ejected from a metallic surface with speeds ranging up to 4.50x10^5 m/s when light with a wavelength of 615nm is used. (a) What is the work function of the metal? (b) What is the cutoff frequency for this surface?
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Which statement concerning the electrons surrounding the nucleus of an atom is NOT correct? a) When 2 electrons pair together, they have opposite spins. b) The number of the electrons in an isolated neural atom is equal to the
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In a cathode ray tube, a beam of electrons is injected horizontally into the exact center of the parallel-plate region. Here L = 3.0 cm and d = 0.20 cm. The top plate has a surface charge density of σ0 = +0.15 μC / m2, and the
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The greater the work function for a metal, A) the greater the speed of the ejected electron B) the smaller the speed of the ejected electron C) the more electrons are ejected D) the lower the threshold frequency E) none of the
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