How do government regulations affect supply and demand? Explain how a government regulation to increase bicycle safety might affect supply and demand. The new government regulation requires bicycle manufacturers to put a chain guard on bicycles they make. Would that affect the supply of bicycles

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

because if the tool that you are using is not balanced it there would be false mass.