Let's say a sound wave is traveling toward a microphone. The microphone picks up compressions and rarefactions as the wave passes by. When a compression hits the microphone, it receives a high amount of air pressure from the particles in that space. During a rarefaction, the air pressure is very low.
A: The Social Security Act was signed by FDR on 8/14/35. Taxes were collected for the first time in January 1937 and the first one-time, lump-sum payments were made that same month. Regular ongoing monthly benefits started in January 1940.nder the 1935 law, what we now think of as Social Security only paid retirement benefits to the primary worker. A 1939 change in the law added survivors benefits and benefits for the retiree's spouse and children. In 1956 disability benefits were added.
Approved on February 4, 1887, the Interstate Commerce Act created an Interstate Commerce Commission to oversee the conduct of the railroad industry. With this act, the railroads became the first industry subject to Federal regulation. In 1887 Congress passed the Interstate Commerce Act, making the railroads the first industry subject to Federal regulation. Congress passed the law largely in response to public demand that railroad operations be regulated. The act also established a five-member enforcement board known as the Interstate Commerce Commission. In the years following the Civil War, railroads were privately owned and entirely unregulated. The railroad companies held a natural monopoly in the areas that only they serviced.