The work function of an unknown metal is 4.40 × 10¯¯ Part 1 of 2 -19 J. What is the minimum frequency of light needed to eject electrons from the metal? Be sure your answer has the correct number of significant digits. Part 2 of 2 1 ☐ x10 S Calculate the kinetic energy of the ejected electrons when light of frequency equal to 3.00 × 1015 is used for irradiation. Be sure your answer has the 15 1 S correct number of significant digits. J ☐ x10

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