Encyclopedia > National parks (United States)

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National parks (United States)

Maintained by the United States National Park Service:

Table of contents

National Parks

National Monuments

National Historical Parks, Memorials, and Battlefields

National Recreation Areas, Seashores and Trails

Other Preserves and Protected Areas



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... a force applied to it and will start rotating perpendicular to the force applied. This is why spinning gyro tops will not simply fall over, but start precessing around. ...

 
 
 
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