Physics help from experts.
(See below for answers)
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?