1.Zamień jednostki: 1013 hPa = … Pa

101 hPa = …MPa

250 Pa = … hPa

35 hPa = … kPa

2,45 Mpa = … Pa
2.Betonowa płyta o powierzchni 5m2 ma ciężar 30000N. Jakie ciśnienie wywiera na podłoże, na którym leży?
3.Na podłodze stoi paczka o masie 20 kg. Wywiera ona na podłogę ciśnienie 500Pa. Oblicz powierzchnię podstawy paczki.
proszę o pomoc daję naj!

6/12=1/2

step-by-step explanation:

i think the answer is a, hope this : )

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