Exton and Shah measured that distance as 0.12 meters, or 0.12 meters per cycle. Multiplying something measured in âmeters per cycleâ by something in âcycles per secondâ will give a measurement in âmeters per second.â That's the wave's velocityâthe speed of light.
The US declared war on Japan (unanimously in the Senate, and 388 to 1 in the House of Representatives) on 8 December 1941 thus entering WWII. The declaration was in response tâ¦o the bombing of Pearl Harbor on 7 December 1941.
The typical date agreed upon by historians to answer the question of when did World War 2 start is September 1 st, 1939. This is the date that Germany invaded Poland; however, France and Great Britain did not declare war on the Germans until September 3 rd.or Poland, Great Britain, Canada, and France this was the start of the War. For those who resided in Czechoslovakia, WW 2 began in March of that year (1939) when Germany attacked the country.