Pentru a încălzi m 1 = 2,24 kg de apă de la temperatura t 1 = 19°C la temperatura t 2 = 100°C, s-au consumat 9,9 * 10 5 J. Știind că o parte s-a transformat în vapori, să se afle masa de apă
vaporizată. ( λ apa =23*10 5 J/kg ).

what are the statements? x

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