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.
U.S. Route 1 (US 1) is a major northâsouth U.S. Highway that serves the East Coast of the United States. It runs 2,369 miles (3,813 km), from Fort Kent, Maine, at the CanadaâUS border, south to Key West, Florida, making it the longest north-south road in the United States.