In physics and engineering, in particular fluid dynamics and hydrometry, the volumetric flow rate, (also known as volume flow rate, rate of fluid flow or volume velocity) is the volume of fluid which passes per unit time; usually represented by the symbol Q (sometimes VÌ). The SI unit is m3/s (cubic metres per second).
The symptoms of the disease were black and purple spots on the body. The spots soon began to become enlarged and swollen. The victims were taken captive by death in about two to seven days. The plague lasted for four years, but it still remained a recurrent fear until the seventeenth century.
Estimates put the death toll of the Black Death or plague around 25  Million, or 25-50% of the population of Europe. The plague was  first noted in 1347 and carried on for aâ¦bout 3 or 4 years until  1350/51. It is hard to say exactly how many were killed per year,  but based on the above information I would estimate about 8.33  Million died each year during the plagues prominence in Europe.  ANSWER This much is true for Europe.