Worksheet 3 - Dr. Ramesh Arasasingham WORKSHEET 3 1. 2....

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Dr. Ramesh Arasasingham WORKSHEET 3 1. Calculate the wavelength in picometer of gamma ray radiation whose frequency is 4.81 × 10 19 Hz. (6.24 pm) 2. An instrument can detect 670 photons of light of wavelength of 6.512 × 10 –4 m. What is the minimum amount of energy in J to which the instrument is sensitive? (2.05 × 10 –19 J) 3. If barium has a photoelectric threshold wavelength of 494 nm, calculate the kinetic energy (J) of the electron emitted when barium is illuminated with light with a wavelength of 302 nm. (2.56 × 10 –19 J) 4. Calculate the wavelength in nm of light (Hz) illuminating a copper surface if the threshold wavelength of copper is 279 nm and the kinetic energy of the electron emitted is 8.63 × 10 –19 J. (1.26 × 10 2 nm) 5. Calculate the de Broglie wavelength in meters of an electron with a mass of 9.11 × 10 –31 kg that has a speed of 5.98 × 10 5 m/s. (1.22 × 10 –9 m) 6. What must the speed in m/s of a lithium atom with a mass of 1.15 × 10 –26 kg be so that it has
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This note was uploaded on 11/19/2010 for the course CHEMISTRY Chem 1A Di taught by Professor Rameshdarasasingham during the Spring '10 term at UC Irvine.

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Worksheet 3 - Dr. Ramesh Arasasingham WORKSHEET 3 1. 2....

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