Why is it not a good idea to seek shelter from a thunderstorm beneath a tree?
A positive charge tends to concentrate in upward projecting objects, and the upward return stroke that meets the stepped leader is most likely to originate in such objects. Therefore, it is not a good idea to seek shelter beneath a tree during a thunderstorm because many lightning fatalities have occurred in the vicinity of trees.
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In the proportion f ~ T, the symbol T represents
A. Fahrenheit temperature. B. Celsius temperature. C. Kelvin temperature. D. all the above
If the masses of two planetary bodies double, and the distance between them also doubles, the force between them would be
A. half as much. B. one-quarter. C. twice as much. D. none of the above
Which manufacturing region in Europe is linked to the Black Sea via the Volga River?
A) Upper Rhine-- Alsace-Lorraine Region (Mid-Rhine) B) Po River Valley (northern Italy) C) Ukraine, including the Donets Basin D) Belgium Netherlands, Northwestern Germany, Northeastern France E) Moscow region in Russia
Rocks may behave differently over the long spans of geologic time than they do in short-term laboratory experiments.
Answer the following statement true (T) or false (F)