Can someone me to fill in the answers above

2200 = wasted is the sound energy

The law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

Gravitational Energy is used for the vaccum cleaner

that would be because of both gravity and friction. so     c

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