Our current model of the atom can be broken down into three constituents parts â protons, neutron, and electrons. Each of these parts has an associated charge, with protons carrying a positive charge, electrons having a negative charge, and neutrons possessing no net charge. In accordance with the Standard Model of particle physics, protons and neutrons make up the nucleus of the atom, while electrons orbit it in a âcloudâ.
Michigan has the longest freshwater coastline in the US and the second longest coast line in the US next to Alaska. There is a comparative table of state shorelines on the Michigan Dept. of Environmental Quality's site that gives the measurements for states touching the Great Lakes.
The United States is 2,800 miles across from its eastern seaboard to its western coast. However, if the U.S. is measured from eastern Maine to Hawaii, it is a distance 5,100 miles. Continue Reading. The U.S. is home to 12,383 miles of coastline, with 6,640 miles of coastline in Alaska alone. In terms of size, the U.S. ranks number four in the world. The geographic center of the country is located in Butte County, South Dakota.