Contrast analog signals with digital signals.
What will be an ideal response?
An analog signal is one in which the waves vary continuously-in other words, the waves have no breaks in them. A digital signal consists of discrete or separate pulses, as opposed to an analog signal, which is continuous. A digital signal has numerous starts and stops, on and off-like Morse code, for example, with its series of dots and dashes.
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Match each service to its share of the food dollar for an agricultural product
a. 6.8 cents d. 4 cents b. 2 cents e. 4.4 cents c. 33.7 cents f. 13.6 cents 7. packaging 8. energy 9. retail trade 10. advertising 11. food services 12. finance and insurance
Using table 20.1 for values of the resistivity of copper, calculate the resistance of a copper wire 1 m long, and 1 mm in diameter. What would the resistivity be if:
(a) The wire had a 1/2 mm diameter. (b) The wire was made of pure iron. (c) The copper contained 0.5 percent silver. (d) The copper contained 10 percent zinc.
China is both a major market and competitor for the United States
Indicate whether the statement is true or false
Most residential communicating systems use ________ wires between all components
A) Four B) Three C) Six D) Five