2017 Med Phys I Lecture 1.4 PreTest Question Title * 1. Name: Question Title * 2. Why are relativistic effects more important when dealing with electrons than than when dealing with protons in radiation therapy? The relativistic effects for both protons and electrons are significant and comparable. The two particles exhibit different depth dose profiles. The lighter particles may be accelerated to a greater fraction of the speed of light at a given energy. Relativity, what? Question Title * 3. What is a common characteristic of events that behave exponentially that allows for us to characterize the behavior as exponential? The individual events are stochastic The individual events are deterministic The individual events have different probabilistic occurrences over different times. Question Title * 4. As beta for an electron approaches 1, what does the mass of the electron approach? 0 0.511 MeV 931.5 MeV infinity Question Title * 5. The wavelength of electromagnetic radiation is _________ to its frequency. proportional inversely proportional not related not linearly related Question Title * 6. Which has the longest wavelength? Radio waves Microwaves Ultraviolet light Question Title * 7. Are there any issues that are not clear to you at this time? Done