Question

Tolong bantu beb ,,plisss

Answer 1

Ini jwabannya Beb
Dik :
A₁ : A₂ = 4 : 1
h₁ = 5 m
h₂ = 1 m
v₁ = 36 km/jam = 10 m/s
P₁ = 9,1*10⁵ Pa

Dit :
v₂ = ?
A₂ * v₂ = A₁ * v₁
1 * v₂ = 4 * 10
v₂ = 40 m/s = 144 km/jam

Rumus Hukum Bernoulli
P₁ + 1/2 * ρ * v₁² + ρ * g * h₁ = P₂ + 1/2 * ρ * v₂² + ρ * g * h₂
9,1*10⁵ + 1/2 *1000*10² + 1000*10*5 = P₂ + 1/2*1000*40² + 1000*10*1
P₂ = 200.000 Pa = 2*10⁵ Pa

ΔP = 9,1*10⁵ - 2*10⁵ = 7,1*10⁵ Pa

Answer 2

Dik = 
A₁ : A₂ ------> = 4 : 1
h₁ = 5 m      h₂ = 1 m
v₁ = 36 km/jam = 10 m/s
P₁ = 9,1×10⁵ pa
ρ = 1000 kg/m³

Dit =
a) v₂
b) P₁ - P₂
c) P₂

jawab =
a) A₁.v₁ = A₂.v₂
    4.10 = 1.v₂
        v₂ = 40 m/s

b) P₁ + .ρ.v₁² + ρ.g.h₁ = P₂ + .ρ.v₂² + ρ.g.h
P₁ - P₂ = .ρ.(v₂²-v₁²)+ρ.g.(h₂-h₁)
P₁ - P₂ = . 1000.(40² - 10²) + 1000.10.(1-5)
P₁ - P₂ =  750000 - 40000
P₁ - P₂ = 710000 Pa
P₁ - P₂ = 7,1×10⁵ Pa

c) P₁ - P₂ = 7,1×10⁵
9,1×10⁵ - P₂ = 7,1×10⁵
P₂ = 2×10⁵ Pa