30.09.2021 11:58
What is the pressure drop due to the Bernoulli Effect as wat | Quizlet
Açıklamalar
Soru
What is the pressure drop due to the Bernoulli Effect as water goes into a 3.00-cm-diameter nozzle from a
9.00-cm-diameter fire hose while carrying a flow of 40.0 L/s? (b) To what maximum height above the nozzle
can this water rise? (The actual height will be significantly smaller due to air resistance.)
Açıklamalar
Resmi kullanıcı
Adım 1
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From Bernoulli Equation we know that :
1
1
P1 + ρv12 + ρgh1 = P2 + ρv22 + ρgh2
2
2
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When the two point are at the same height : it reduced to
1
1
P1 + ρv12 = P2 + ρv22
2
2
​
​
​
​
​
​
Where:
P1 , P2 are the pressures at points 1, 2 .
ρ is the density of the fluid .
v1 ,v2 are the velocities of the fluids at points 1,2 .
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Givens :r2
​
= 0.015 × m , ρ = 1000kg/m3 , r1 = 0.045m , g = 9.8m/s2
​
Plugging known information to get :
Q = A1 v1
Q
v1 =
A1
40 × 10−3
=
π0.0452
= 6.29
Q
v2 =
A2
40 × 10−3
=
π0.0152
= 56.6
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What is the pressure drop due to the Bernoulli Effect as wat | Quizlet
Adım 2
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Now Plugging these intoBernoulli Equation :
1
1
P1 + ρv12 = P2 + ρv22
2
2
1 2 1 2
P2 − P1 = ρv2 − ρv1
2
2
1
ΔP = ρ(v22 − v12 )
2
1
= × 1000(56.62 − 6.292 )
2
= 1.58 × 106
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ΔP = 1.58 × 106 N/m2
Sonuç
3/3
1.58 × 106 N/m2 .
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30.09.2021 11:58
What is the pressure drop due to the Bernoulli Effect as wat | Quizlet
PHYS I C S
P H YSI C S
(a) What is the pressure drop due to the Bernoulli effect
as water goes into a 3.00-cm-diameter nozzle from a
9.00-cm-diameter fire hose while carrying a flow of 40.0
L/s? (b) To what maximum height above the nozzle can
this water rise? (The actual height will be significantly
smaller due to air resistance.)
Water pressure inside a hose nozzle can be less than
atmospheric pressure due to the Bernoulli effect.
Explain in terms of energy how the water can emerge
from the nozzle against the opposing atmospheric
pressure.
PHYS I C S
P H YSI C S
Water pressure inside a hose nozzle can be less than
atmospheric pressure due to the Bernoulli effect.
Explain in terms of energy how the water can emerge
from the nozzle against the opposing atmospheric
pressure.
A stream of water goes through a garden hose into a
nozzle. As the water speeds up, what happens to the
water pressure?
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