If the output of an astable 555 timer is LOW for 716 ?s and HIGH for 13.7 ms, the duty cycle is

A) 78% B) 95% C) 57.4% D) 67.8%


B

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What is the maximum length of cable weighing 5 lbs/ft that can be pulled through a 45- degree bend with a coefficient of friction of 1.48 using equipment with a maximum pulling force of 2,000 pounds?

a. 40 b. 270 c. 308 d. 1,351

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A forest that has been clear-cut has had all of the marketable trees removed from it

Indicate whether the statement is true or false.

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Of the following animals, which is often used for research?

a. Mice c. Guinea pigs b. Rabbits d. All answers

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The square of the diameter equals the cross-sectional area. Find the cross-sectional area in the circular mils of a wire that is 104 mils in diameter.

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

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