Summarize photovoltaic action.

What will be an ideal response?


Photons excite electrons in the semiconductor material, and a potential is created between the P and N material. When a complete external circuit is connected, electrons flow from the N material through the load and return to the P material.

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Chinchillas are able to shoot a stream of urine at intruders

Indicate whether the statement is true or false

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In a water-cooled condensing unit/cooling tower combination, the temperature difference of the water through the condenser will be approximately ____.

A. 10°F B. 20°F C. 30°F D. 40°F

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Yearling weight is based on a sheep that is_____-days old.

a. 365 c. 120 b. 350 d. 90

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What was developed in an effort to overcome pulse dispersion?

A. Step-index fibers B. Commercial grade fibers C. Graded-index fibers D. Single-mode fibers

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