2. Suppose we shine yellow light (with a wavelength of 570nm ) at a sample of aluminum. a. How much energy is there in one photon of yellow light? b. If there's a total of 1.00m J of energy in the whole beam, how many photons are there in total? c. Only photons with a frequency greater than 9.81014Hz will kick an electron off of aluminum (the photoelectric effect). Will electrons be ejected from aluminum by yellow light? d. Based on the electromagnetic spectrum, which type(s) of photons could kick electrons off of Al? 3. Waves are blocked by things much larger than their wavelength, but tend to "bend" (diffract) around things closer to their own size. a. Analog TV operates around 100kHz - what would the wavelength be? b. Cell phones operate around 1000MHz - what would the wavelength be? c. Given how EM radiation diffracts, what would the consequences be for sending/receiving these different types of signals