You have three metal samples—A, B, and C—that aretantalum (Ta), barium (Ba), and tungsten (W), but you don’tknow which is which. Metal A emits electrons in response to vis-ible light; metals B and C require UV light. (a) Identify metal A,and find the longest wavelength that removes an electron. (b)What range of wavelengths would distinguish B and C? [Thework functions are Ta (6.81x10^-19J), Ba (4.30x10^-19J), andW (7.16x10^-19J)
You have three metal samples—A, B, and C—that aretantalum (Ta), barium (Ba), and tungsten (W), but you don’tknow which is which. Metal A emits electrons in response to vis-ible light; metals B and C require UV light. (a) Identify metal A,and find the longest wavelength that removes an electron. (b)What range of wavelengths would distinguish B and C? [Thework functions are Ta (6.81x10^-19J), Ba (4.30x10^-19J), andW (7.16x10^-19J)
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You have three metal samples—A, B, and C—that aretantalum (Ta), barium (Ba), and tungsten (W), but you don’tknow which is which. Metal A emits electrons in response to vis-ible light; metals B and C require UV light. (a) Identify metal A,and find the longest wavelength that removes an electron. (b)What range of wavelengths would distinguish B and C? [Thework functions are Ta (6.81x10^-19J), Ba (4.30x10^-19J), andW (7.16x10^-19J)
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