Light travels through the core of a fiber-optic cable based on the principle of ____________________.

Fill in the blank(s) with the appropriate word(s).


total reflection

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________: as disposable income of a consumer increases, the percentage of income spent

Fill in the blank(s) with the appropriate word(s).

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The throat capacity of a drill press is _____.

a. the largest drill the chuck can hold b. the distance from the table to the chuck c. the distance the drill can be raised and lowered d. the distance from its rear post to the center of the bit

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There are about _______ known, culturable species of bacteria that inhabit our environment

a. 1,300 c. 9,000 b. 5,400 d. 12,000

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A load is ________

A) the part of a circuit that has resistance B) provides a source of voltage for a circuit C) a switch in a circuit that controls current flow

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