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.
Blood accounts for 7% of the human body weight, with an average density of approximately 1060 kg/m 3, very close to pure water's density of 1000 kg/m 3. The average adult has a blood volume of roughly 5 litres (11 US pt), which is composed of plasma and several kinds of cells.bout 55% of blood is blood plasma, a fluid that is the blood's liquid medium, which by itself is straw-yellow in color. The blood plasma volume totals of 2.7â3.0 liters (2.8â3.2 quarts) in an average human.