Please answer those questions accurately Please. This is the whole homework I am stuck on. Please the answers are needed to be accurate

EXERCISES Give three examples of information sources other than computers. 6.1 Name a common household device that emits an aperiodic signal Why are sine waves fundamental to data communications? 3 State and describe the four fundamental characteristics of a sine wave. s when shown a graph of a sine wave, what is the quickest way to determine whether the phase is zero? 6 When is a wave classified as simple 67 What does Fourier analysis of a composite wave produce? s On a frequency domain graph, what does the y-axis represent? 9 What is the analog bandwidth of a signal? 6.10 Is bandwidth easier to compute from a time domain or frequeney domain representation? Why? 6.11 Suppose an engineer increases the number of possible signal levels from two to four. How many more bits can be sent in the same amount of time? Explain. 6.12 What is the definition of baud