In what application are vacuum tubes still found in electronic communications?

A. Frequency-modulated oscillator
B. High-power radio transmitters
C. Stereo multiplex FM broadcasts
D. Frequency-division multiplexing


B

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Payments are typically made twice during construction.

Answer the following statement true (T) or false (F)

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Plants that are short of sulfur may be stunted, and older leaves will be dark green

Indicate whether the statement is true or false.

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Most anaerobic organisms in soils are bacteria

Indicate whether the statement is true or false

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Convert the rectangular factors to polar form and compute the product. Also compute the product directly using the rectangular factors. Compare the results.

a. (50 + j10) (4 + j8) b. ( j2 ? 2) (4 + j5) (2 +j7)

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