You determine that light of minimum-frequency (7.20 times 10^{14} mathrm{~Hz}) is needed to eject electrons from the
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You determine that light of minimum-frequency \(7.20 \times 10^{14} \mathrm{~Hz}\) is needed to eject electrons from the surface of a certain metal. What frequency should the light have in order for the ejected electrons to have a maximum speed of \(8.50 \times 10^{5} \mathrm{~m} / \mathrm{s}\) ?
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