Bernoulli's equation allows to find the result for the change of the kinetic energy of the fluid in the pipe is:
Kinetic energy change is: ΔK = 3.98 J
Fluid mechanics studies the movement of liquid and gases through pipes, for this it uses the Bernoulli's equation, which is the work and energy relationship for fluids.
P₂ + ½ ρ v₂² + ρ g y₂ = P₁ + ½ ρ v₁² + ρ g y₁
Where the subscripts 1 and 2 are the two points of interest, P is the pressure, ρ the density, v the velocity and y the height.
The expression of kinetic energy in fluids is:
K = ½ ρ v²
Let's substitute
K₂ - K₁ = P₁-P₂ + ρ g (y₁-y₂)
ΔK = P₁-P₂ + rho g (y₁-y₂)
Indicates the density of the fluid is 4 10⁻³ km / m³, there is a height difference of Δy = 100 m and the pressure of 0.08 Pa and 0.02 Pa.
ΔK = (0.08 -0.02) + 4 10⁻³ 9.8 100
ΔK = 0.06 + 3.92 ΔK = 3.98 J
In conclusion using Bernoulli's equation we can find the result for the change in the kinetic energy of the fluid in the pipe is:
ΔK = 3.98 J
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Why does the magnitude of the resultant force increases once the box start moving?
proportional to the variation of the linear momentum
(hope this helps) :)
1800 cm3 of fresh water of density 1000 km
is mixed with 2200cm of water of density
1025kg3.calculate the density of the mixture.
Answer:
the density of seawater is thousand kg
Explanation:
From rest, a car accelerates to 4.2 m/s2 for 10 seconds before winning the race. How far did it run?
Write the final answer in complete sentence.
Answer:
[tex] s = ut + \frac{1}{2} a {t}^{2} \\ u = 0 \\ a = 4.2 \: m {sec}^{ - 2} \\ t = 10sec \\ s = 0 + \frac{1}{2} (4.2) {10}^{2} \\ = 1.2 \times 100 \\\boxed{ s = 120 \: m}[/tex]
how long does it take for a pap smear to come back
Explain how a book can have energy even if it is not moving.
Tell me the answer what will be in blanks
Answer:
what do you mean by blanks??
Explanation:
i don't get
it
Answer:
ikoon
Explanation:
i think so it ikoon
by the nucleus, protons and neutrons of an atom does it contain more mass
Answer:
Virtually all the mass of an atom resides in its nucleus, according to Chemistry
Explanation:
Repede sdfakasdfasdf
Answer:
i dontksjsoskskskdijeeiejeiejeieje
whats the answer
----------------------------
Answer:
repel each other
Explanation:
The magnitude of the charge of an electron is called... ... If a positively-charged glass rod is suspended so that it turns easily and another positively-charged glass rod is brought close to it, the two rods will... Repel each other.
Newton's 2nd Law of Motion says that Force is equal to the Mass of an object times its Acceleration. With that in mind how would you calculate Acceleration?
Acceleration = Mass/Force
Acceleration = Force/Mass
Momentum (p) = mass x velocity
Acceleration = Accel + er + nation - the first n
Answer: Acceleration = Force/Mass
Explanation:
F = ma
a = F/m
Acceleration = Force/Mass
What is an example of a chemical change
Answer:
Hello, Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.
Explanation:
I hape this helps remember to make someone smile today
The ………………………. is the substance/material travels through
1. Energy
2. Medium
3. Transverse
4. Longitudinal
Answer:
energy
Explanation:
the energy is the substance
Answer:
Medium
Explanation:
What is the power of a diverging lens of focal length 0.4 m
a) 2.5
b) 3.5
c)-3.5
d)-2.5
Answer:
-2.5 is the answer to your question
Please help me and I’ll mark as brainliest i promise
Answer:
C
Explanation:
because C should be the correct one
The Red one is wrong also the blue mark means nothing
Answer:
it is c
Explanation:
the car is moving back to its original position
a bubble of air of volume 1cm^3 is released by a deep sea diver at a depth where the pressure is 4.0 atmospheres. assuming its temperature remains constant (T1=T2), what is its volume just before it reaches the surface where the pressure is 1.0 atmosphere?
Answer:
hope this helps!
Explanation:
Volume of the air bubble, V1=1.0cm3=1.0×10−6m3
Bubble rises to height, d=40m
Temperature at a depth of 40 m, T1=12oC=285K
Temperature at the surface of the lake, T2=35oC=308K
The pressure on the surface of the lake: P2=1atm=1×1.103×105Pa
The pressure at the depth of 40 m: P1=1atm+dρg
Where,
ρ is the density of water =103kg/m3
g is the acceleration due to gravity =9.8m/s2
∴P1=1.103×105+40×103×9.8=493300Pa
We have T1P1V1=T2P2V2
Where, V2 is the volume of the air bubble when it reaches the surface.
V2=
How does the mass of an object affect its acceleration?
Answer:
as the mass of an object is increased, the acceleration of the object is decreased & vice-versa.
Explanation:
hope this helps!
A 1200kg car traveling at a speed of 29 m/s drives horizontally of a 90m cliff the potential energy is=
Answer:
Sketch the situation.
b. Calculate the potential energy, the kinetic energy, and the total energy of the car as it leaves the cliff.
c. Make a graph displaying the kinetic, gravitational potential, and total energy of the car at each 10 m
increment of height as it drops
Explanation:
The potential energy of the car at that position is 10.6 x 10⁵ J.
What is meant by potential energy ?Potential energy of an object is defined as the energy acquired by the object by virtue its position.
Here,
Mass of the car, m = 1200 kg
Speed of the car, v = 29 m/s
Height of the cliff, h = 90 m
Therefore,
Potential energy of the car, PE = mgh
PE = 1200 x 9.8 x 90
PE = 10.6 x 10⁵ J
Hence,
The potential energy of the car at that position is 10.6 x 10⁵ J.
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Help asap please thank you
Answer:
1. 5 m/s
2. 5 m/s/s
Explanation:
1. 50 - 5 = 45
45/9 = 5
2. 25 - 0 = 25
25/5 = 5
hope this helps!
what does auxiliary heat mean on a honeywell thermostat
Answer: Aux Ht or Auxiliary heat is the backup heat that turns on to help the compressor for first stage maintain your temperature setting. ... When the thermostat is in this position the compressor does not run, only the Emergency heat runs
Explanation:
What does auxiliary heat mean on a Honeywell thermostat.
Answer:What does aux heat mean on a Honeywell system? Short for auxiliary heat, this system is designed to heat your home up quickly instead of waiting for the cold heat pump on the exterior of your home. Unfortunately, using the auxiliary heat is significantly more expensive than using your heat pump.
Explanation:Aux on the thermostat stands for auxiliary heat. Auxiliary heat is the electric heat strip in your air handler that is supplemental heat. Emergency heat is the same thing as auxiliary heat. Auxiliary heat/ Emergency heat help the heat pump keep up when cold outside or the temperature differential on the thermostat is large.
Please help I'll mark brainliest (NO FKG LINKS)
Answer:
For the first picture the answer is A. and the second picture answer is also A
Explanation:
Answer:
Part 1
C. 10 Coulombs
Part 2
A. The strength of the magnet increased as the amount of current increased.
Explanation:
1. When a voltage is applied to these plates an electrical current flows charging up one plate with a positive charge with respect to the supply voltage and the other plate with an equal and opposite negative charge.
If the capacitors are connected by a conductor they must have equal potentials. If their charges are not +/- Q there will be a potential difference and charges will flow until they are +/- .
2. Based upon the results of the experiment which is graphed, an increase in current increases the number of paperclips picked up. The increase in current produced a stronger magnetic field from the electromagnet created. The ability to pick up paperclips testifies to the strength of the magnet and this strength is because of the current emitted to the coils which in turn magnetizes the nail
I need the right answer ASAP NO LINKS!!!
Answer and Explanation:
Water and power come from external sources is the answer.
Open systems are processes that interact with other systems other than itself, including the outside environment.
A washing machines needs to taken in water and power (external sources) for the machine/system to be able to function.
#teamtrees #PAW (Plant And Water)
I hope this helps!
A 30.6 kg crate initially at rest on a horizontal floor requires a 100 N 30° with the horizontal force to set it in motion. Find the coefficient of static friction between the crate and the floor
The frictional force opposes the forward motion of the crate. The coefficient of static friction is 0.2.
Using the formula;
Fa = - Ff + mgsinθ
but Ff = μsFN and N = mgcosθ
Hence;
Fa = mgsinθ - μsmgcosθ
μsmgcosθ = mgsinθ - Fa
μk = mgsinθ - Fa/mgcosθ
μk = coefficient of static friction = ?
Fa = horizontal force = 100N
m = mass = 30.6 kg
θ = angle = 30°
g = acceleration due to gravity = 10 m/s^2
Substituting values;
μk = [(30.6 × 10) sin 30°] - 100 / (30.6 kg × 10) cos 30°
μk = 153 - 100/265
μk = 0.2
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if a dolphin swims at 15 m/s for 30 seconds, how far would the dolphin swim?
Explain how pressure can be used to
change the state of matter
Answer:
Physical conditions like temperature and pressure affect state of matter. ... When the pressure exerted on a substance increases, it can cause the substance to condense. Decreasing pressure can cause it to vaporize. For some types of rock, decreasing pressure can also cause them to melt.
Please help me. Brainiest to the correct answer.
A computer uses 40W of power. Calculate the current it draws when connected to a 230V mains supply.
Answer:
0. 174 A
Explanation:
This is similar to your other question
[tex]\boxed{\mathfrak{Power(P)=Voltage(V) \times Current(I)}}[/tex]
Voltage (V) = 230 VPower (P) = 40 W=> 40 = 230 × I
=> [tex]\mathsf{I=\frac{40}{230} }[/tex]
=> I = [tex]\mathsf{\frac{4}{23} }[/tex]
=> I = 0.174 A
I is the current, the computer draws when connected to a 230 V mains supply, and it's SI unit is Amperes.
[tex]\mathfrak{\overline{There\: you \: are!}}[/tex]
Why does the sun have an up and down motion in the sky?
Answer:
The sun stays in its position at the center of our solar system. It doesn't rise and set. But it appears to rise and set because of the Earth's rotation on its axis
Explanation:
Hope this helps :)
Interpret the data:
Make a claim that answers the scientific question.
Where are the field poles mounted on an alternator
A. Load
B. Shaft
C. Exciter
D. Rotor
Explanation:
(D) i think there you go have a good day
Is the following statement a fact or an opinion: Science] can help solve any problem our world faces? Explain your answer
Please help
Answer:
can u repost the question properly
Answer:
It's a fact
Explanation:
There are different types of sciences for every problem that could happen on earth