The phase velocity of a wave tells us how fast any given phase of the wave is moving e.g. the crest. If we examine some fixed position, then we can count how frequently a full wavelength passes this position as the wave moves with time. This leads us directly to $v = Î»f$.
Beverly Hills, Michigan, in Oakland county, is 3 miles N of Southfield, Michigan and 16 miles NW of Detroit, Michigan. The people of the town are in the Detroit metropolitan area.
Wayland is a city in Allegan County in the U.S. state of Michigan. The population was 3,939 at the 2000 census. The city is located at the northwest corner of Wayland Township, but is politically independent. The city has also incorporated a portion of land in the south of adjacent Leighton Township. U.S. Route 131 forms the western boundary of the city. A portion of Gun Lake also resides in Wayland Township, which is a popular summer time area because of the so called Party Island that resides in the very large lake. Al Capone actually owned a house overlooking the vast lake front.