Some memory sticks can store 5,500 megabytes of information. If an average word requires 9.00 bytes of storage, how many words can be stored on one disk? (put your answer in scientific notation with the correct number of sig figs in the format X. XXEX words)

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