Cisnienie atmosferyczne wynosi 1000hPa, Jakie cisnienie panuje na dnie jeziora o glebokosci 5m? Gestosc wody wynosi 1000kg/m(szescienny), g= 10N/kg
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pa = 1000 hPa = 100 000 Pa
h = 5 m
d = 1000 kg/m³
g = 10 N/kg
szukane:
p = ?
p = ph + pa
p = d*g*h + pa
p = 1000kg/m³*10N/kg*5m + 100 000 Pa = 50 000 Pa + 100 000 Pa
p = 150 000 Pa = 1 500 hPa = 150 kPa
1 hPa = 100 Pa
1 kPa = 1000 Pa