A student was wondering why electromagnetic radiation can travel through 2 points the vacuum of outer space. The student had learned that sound cannot travel through this region. Explain why electromagnetic radiation can travel in outer space. Your answer A cellphone emits a radio signal with a frequency of 1910 MHz. Determine 2 points its wavelength. Show your work. Your answer A student noticed that sunglasses rated for both UVA and UVB protection 2 points were not rated for UVC protection. However, the student learned that UVC radiation is far more damaging to body tissues than either UVA or UVB radiation. Explain why UVC protection for anyone going outside-even on a sunny day-is much less important than UVA and UVB protection. Your answerWhen using X-ray technology in a medical diagnosis, there are both risks 2 points and benefits to the patient. Describe one risk and one benefit to patients in using X-ray technology. Your answer A physician makes a decision not to take an X-ray image of a seemingly 2 points minor injury to a patient's knee. Assume the physician considered the risks and benefits of taking the X-ray image before making her decision. Which set of factors dominated the decision mode by the physician-the risks or the benefits? Explain your answer. Your