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
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
Yearling weight is based on a sheep that is_____-days old.
a. 365 c. 120 b. 350 d. 90
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