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Problems

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1. Light having a wavelength of 300 nm caused electrons to be ejected with a stopping potential of 2.0V Determine:

a. the work function of the metal.

b. the threshold frequency.

2. If the uncertainty with respect to the position of a particle is 5.0 x 10^-8 m, what is the minimum uncertainty in the particle's momentum?

3. What is the deBroglie wavelength of an electron having 9.0 x 10^-17 J of Kinetic energy?

Answers

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