With the information you learned from the video in mind, how do we get our energy (there's more than one way)? Explain how that energy converts itself from Potential to kinetic energy.

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

How does an observation about an object differ from an inference about that object

To fully describe the photoelectric effect, scientists must consider which of the following to be quantized? o a. both light and matter o b. matter only o c. light only o d. neither light nor matter