Fifteenth Amendment ratified. The Fifteenth Amendment to the U.S. Constitution gave the vote to all male citizens regardless of color or previous condition of servitude. Joseph H. Rainey, first black member sworn in as member of U. S. House of Representatives. December 12, 1870.
The average density of the human body is 985 kg/m 3, and the typical density of seawater is about 1020 kg/m 3.a) Draw a free-body diagram of a human body floating in seawater and determine what percentage of the body's volume is submerged.b) The average density of the human body, after maximum inhalation of air, changes to 945 kg/m 3.) Draw a free-body diagram of a human body floating in seawater and determine what percentage of the body's volume is submerged. b) The average density of the human body, after maximum inhalation of air, changes to 945 kg/m 3.
Population Density. the density of population in a given area. Population density is expressed in terms of the number of permanent inhabitants per unit area, usually per sq km.Uninhabited territory and large inland water areas are sometimes excluded when computing density.Separate density indexes are applied for urban and rural populations.opulation density is expressed in terms of the number of permanent inhabitants per unit area, usually per sq km. Uninhabited territory and large inland water areas are sometimes excluded when computing density.