In an experiment to study the photoelectric effect, a scientist measures the kinetic energy of ejected electrons as a function of the frequency of radiation hitting a metal surface. She obtains the following plot. The point labeled “ v0 ” corresponds to light with a wavelength of 680 nm. (a)What is the value of in s-1? (b)What is the value of the work function of the metal in units of of kj/mol ejected electrons? (c) What happens when the metal is irradiated with light of frequency less than Vo? (d) Note that when the frequency of the light is greater than Vo, the plot shows a straight line with a nonzero slope. Why is this the case? (e) Can you determine the slope of the line segment discussed in part (d)? Explain.

Note taker: Sera ASTR 1345 Light and Energy Observational Astronomers Use telescopes to study actual events and phenomena Ex. Edwin Hubble, Galileo Galilei Theoretical Astronomers Use mathematics and physics-based predictions and theories Ex. Stephen Hawking, Kip Thorne Computational Astronomers...