Question

imi puteti rezolva si mie problemele 204 si 205. Va rog frumos!!!
Dau coroană​

Answer 1

204.

P=67,5 CP=49680 W

η=P/Pa=>Pa=P/η=49680/0,9=55200 W

Pa=ρ*g*h=>h=Pa/ρ*g=55200/10000=5,52 m

205.

Dm=Dv*ρ=>Dv=Dm/ρ=0,5/1000=0,0005 m^3/s

Dv=vS=>v=Dv/S=0,0005/0,00002=25 m/s

F=Dm•v=0,5•25=12,5 N

L=Fh=12,5*6=75 W

η=Pc/L=50/75=0,8=80%