Which two notes are not an octave apart? 256 Hz and 512 Hz

262 Hz and 524 Hz

331 Hz and 622 Hz

277 Hz and 554 Hz

i need my girl back keith uses i need my girl back

explanation:

my daughter rae

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

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