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3. For the following questions, you may use any resources you wish to answer them. You must write your solutions by hand, cite all your references, and show all your calculations. [a] Watch the video gpb.org/physics-in-motion/unit-6/the-nature-of-waves (Physics in Motion, Unit 6, Segment A). Write a 50-word paragraph describing three interesting things about waves you learned, and also describe at least one equation you learned about in the video. [b] Do the same for gpb.org/physics-in-motion/unit-6/sound-wave-properties (Unit 6, Seg. B). [d] Using the equation for the speed of sound given around 7:15 of the video in Part [b], compute the speed of sound on both a warm summer day and a cold winter day, using temperatures appropriate for where you life. Show your calculations