In the interest of science you give your roommate a flashing light signal beacon and toss him/her into a supermassive galactic black hole. Describe what you see as you observe the fall from far away, stationary relative to the black hole. Explain your reasoning in each of the following questions. a. What happens to the apparent timing and color of the signal beacon as your roommate approaches the event horizon? A: The signal beacon flashes less frequently as he approaches the event horizon and is blue shifted? b. How fast does your roommate seem to be traveling as he/she approaches the horizon? A: ??? c. How does the brightness of the image vary with time? A: The brightness decreases over time?