physics

Read this and fill in the blank, Answer the qestions please

How are you hearing Me? 1. Annotate your System Analysis diagram (Below) as you read. 2. Highlight physics terms Part 1: Speaking into the phone ~ Turning Speech into Digital Information Speaking is transferring motion energy in your vocal cords to motion energy of the air. Your vocal cords move quickly back and forth. When they move forward they push the air in your throat forward making a high-pressure front of air. This is quickly followed by your vocal cords moving back creating a space with much less air (or low-pressure front). These tiny, rapid changes of high-low-high-low-high-low pressure fronts traveling out of your mouth toward the phone is called a sound wave. The microphone and processor in your cell phone convert the information in this sound wave into digital information. This digital information is really as simple as a long string of 1's and 0's, for example, 110110101001010001101001101001. Part 2: How your cell phone sends the digital information to another cell phone The converted sound wave, now an electric signal inside the cell phone is then encoded into a type of light wave invisible to our eyes called radio waves. Radio waves also oscillate between high-low-high-low like sound waves, but also have many important differences from sound waves. One of the most notable differences is that sound needs air or another medium to travel through, but light, being made up of electric and magnetic fields can travel through empty space. (Note also, since light is made up of oscillating electric and magnetic fields it is often referred to as an electromagnetic wave.) Another important difference is that while sound travels superfast, over 300 m/s in air, light travels super duper fast, near 300,000,000 m/s in air. So it is easy to see why your voice once encoded and broadcasted by your cell phone's antenna asradio waves can quickly travel to the nearest cell tower, then be rebroadcasted to the closest cell tower to who you are calling, and then be rewebroadcasted by that cell tower to their cell phone, all in less than a second. Part 3: From Your Fliend's Phone to their Ear Once this digital signal [encoded in the radio waves] reaches your friend's cell phone antenna, the digital signal then is converted back into an electrical signal. This electric signal is then processed and sent to the cell phones speaker which converts that signal back into a sound wave similar to your voice. This process of hearing someone's voice from far away is why telephones are called telephones that is, tele = "far away\When a computer is processing ASCII, it breaks the digital information (a string of 1's and 0's) into chunks of eight 1's or 0's. Each chunk is called a byte and encodes a number, letter, or punctuation mark. The first few numbers distinguish whether the code represents a number (001) or a letter (011). For example: 011001000110111101100111 01100100 01101111 01100111 raw digital information byte byte byte d g dog See if you can decode these messages: A) 01100111 011 10010 001 11000 (3 byte file) B) 011010000110100100100000001 1010100100001 (5 byte file) C) Encode your own message: D) Decode someone else's message