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.
The human body has a density close to that of water ~ 1000 kg/m^3. an average person weight maybe 70 kg, which gives an approximate body volume of. V=m/M = 70/1000 = 0,07 m^3.n Physics. Since the human body is very close to the density of water, you can easily calculate the volume from the weight. A cubic foot of water weighs about 62.4 pounds or in metric, a â¦ kilogram is equal to a liter. If you weigh a hundred kilos, your body volume is 0.1 cubic meters or a hundred liters.