fajarperdana
Cari dulu massa air ρ air=1000 kg/m³ m=ρ×v =1000×1200 =1.200.000 kg =1,2×10^6 kg E air terjun=ΔEp = mg(h₂-h₁) = 1,2×10^6×10(100-0) =1,2×10^6×10^3 =1,2×10^9 Joule E listrik=3/4 E air terjun =3/4×1,2×10^9 =9×10^8 Joule P=E listrik/t =(9×10^9)/2 =4,5×10^8 Watt =4,5×10^5 kW
ρ air=1000 kg/m³
m=ρ×v
=1000×1200
=1.200.000 kg
=1,2×10^6 kg
E air terjun=ΔEp
= mg(h₂-h₁)
= 1,2×10^6×10(100-0)
=1,2×10^6×10^3
=1,2×10^9 Joule
E listrik=3/4 E air terjun
=3/4×1,2×10^9
=9×10^8 Joule
P=E listrik/t
=(9×10^9)/2
=4,5×10^8 Watt
=4,5×10^5 kW