With what speed are electrons emitted from the copper

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Copper has a work function of 4.7eV, while gold has a work function of 5.1eV. What are the minimum frequencies of light needed to emit electrons off each metal? Suppose a lamp is made which shines light of the exact minimum frequency needed to emit electrons off of gold. If this lamp shines onto copper, with what speed are electrons emitted from the copper?

Reference no: EM13337548

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