The m dot = 1A1v1 = (821 kg/m3)(0.618 m2)(2.117 m/s) 1077 kg/s is the flow rate of the oil.
What is the horizontal pipe formula?fluid moving through a horizontal pipe P1 + ½ρv12 = P2 + ½ρv22. The pressure will depend on the fluid's speed if it is flowing frictionlessly through a horizontal pipe with a variable cross-sectional area as a liquid (or a gas that is not being compressed).
The fluid's velocity and cross-sectional area before and after the pipe's constriction can be compared using the continuity concept.
ρ1A1v1 = ρ2A2v
Moreover, we may link the fluid's pressure and velocity before and after the constriction using Bernoulli's equation:
P1 + 1/2ρ1v1² = P2 + 1/2ρ2v2²
v2 = (ρ1/ρ2) × (A1/A2) × v1
P1 + 1/2ρ1v1² = P2 + 1/2ρ1(A1/A2)²(v1)²
Solving for v1, we get:
v1 = sqrt(2(P1 - P2)/ρ1(1 - (A1/A2)²))
v1 = sqrt(2(7980 - 5985)/(821)(1 - (0.618/0.223)^2)) = 2.117 m/s.
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When there is a temperature inversion, you would expect to experience Group of answer choices clouds with extensive vertical development above an inversion aloft. good visibility in the lower levels of the atmosphere and poor visibility above an inversion aloft. an increase in temperature as altitude increases.
Temperature inversion leads to an increase in temperature as altitude increases.
The term temperature inversion refers to a situation in which a layer of warm air lies over a layer of cool air. This is also referred to as thermal inversion. This occurs when the air below to loose heat rapidly.
One of the effects of temperature inversion is reduction in visibility. So, thermal inversion leads to an increase in temperature as altitude increases.
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Which of the following is NOT a sign of extreme dehydration:
A. Severe headache
B. Dry chapped lips
C, Sweating excessively
D. Dark yellow urine
Since dehydration is due to lack of water, sweating excessively is Not a sign of extreme dehydration.
What is dehydration?Dehydration is a condition in which the body lack a enough water necessary for metabolic activities.
Dehydration results in extreme physical conditions of the body such as fatigue.
Some signs of extreme dehydration include:
Severe headacheDry chapped lipsDark yellow urineTherefore, sweating excessively is Not a sign of extreme dehydration.
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Which of the 4 necessities of life can Mars easily provide for us now?
Astronauts could use Mars's natural resources to grow food. Mars's atmosphere consists mostly of carbon dioxide, an essential gas for plant survival, and Martian soil has the essential nutrients plants need to survive.
Chemical Process-
Method or means of changing one or more
chemicals or chemical compounds
Answer:
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... Chemical reactions differ from physical changes, which include changes of state, such as ice melting to water and water evaporating to
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What force is necessary to give a 1000 kg rocket an acceleration of 150
m/s2?
Answer:
150,000N
Explanation:
Force=Mass*Acceleration
F=ma
Mass of the rocket=1000Kg
Acceleration=150 m/s²
Force=1000*150=150,000kgm/s²=150,000N
write your opinion about achievement made by during rana rule
Answer:
Your opinion about achievement made by during rana rule
Explanation:
April Fools !
What is power?
A. a magnitude of a force needed to move an object
B. how much work can be done in a given time
C. the distance over time that an object moves
D, The energy needed to create work
Answer:
The answer is B.
Explanation:
The formula of power is :
\(power = \frac{work \: done}{time} \)
* Work done can be "Energy"
Get the equation for energy. Explain the physical meaning of
energy in cfd.
The equation for energy in the context of fluid dynamics, specifically in Computational Fluid Dynamics (CFD), is typically represented by the conservation of energy equation, also known as the energy equation or the first law of thermodynamics. The equation can be expressed as:
ρ * (du/dt + u * ∇u) = -∇p + ∇⋅(μ * (∇u + (∇u)^T)) + ρ * g + Q
where:
ρ is the density of the fluid
u is the velocity vector
t is time
∇u represents the gradient of velocity
p is the pressure
μ is the dynamic viscosity
g is the gravitational acceleration vector
Q represents any external heat source/sink
The physical meaning of energy in CFD is the total energy of the fluid system, which includes kinetic energy (associated with the motion of the fluid), potential energy (associated with the elevation of the fluid due to gravity), and internal energy (associated with the fluid's temperature and pressure). The energy equation describes how this total energy is conserved and transformed within the fluid system.
In CFD simulations, the energy equation plays a crucial role in modeling the energy transfer, heat transfer, and flow characteristics within the fluid. It helps in understanding how energy is distributed, dissipated, and exchanged within the fluid domain. By solving the energy equation numerically, CFD simulations can predict temperature profiles, flow patterns, heat transfer rates, and other important parameters that are essential for various engineering applications, such as designing efficient cooling systems, optimizing combustion processes, and analyzing thermal behavior in fluid flows.
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You are waiting in line for your favorite ride and carrying a backpack with you that
weighs 20 N. You've been standing in the SAME spot in line for 5 minutes how much
power do you use? Explain your answer.
What is the purpose of nucleophilic substitution reactions of akyly halides experiment?
The purpose of nucleophilic substitution reactions of alkyl halides experiment is to demonstrate in the laboratory setting Nucleophilic substitution reactions of alkyl halides.
In this it is been aimed to observe nucleophilic substitution reactions, SN1 and SN2 will by the addition of a solvent to mixtures of alkyl halides. In order to make this experiment effective a standard procedure is being used and noted observations while each reaction occurred.
Nucleophilic substitution reactions are an important class of reactions that allow the interconversion of functional groups. For alcohols, the range of substitution reactions possible can be increased by utilizing the tosylates (R-OTs), an alternative method of converting the -OH to a better leaving group.
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At time t=0, a particle is located at the point (3,8,8). It travels in a straight line to the point (8,9,4), has speed 7 at (3,8,8) and constant acceleration 5i+j−4k. Find an equation for the position vector r(t) of the particle at time t The equation for the position vector r(t) of the particle at lime t is r(t)= (Type exact answers, using radicals as needed.)
The equation for the position vector r(t) of the particle at time t is :r(t) = 3i + 8j + 8k + (7i + 0j + 0k)t + (5/2i + 1/2j - 2k)t²
Given,Initial velocity, v0= 7 m/s
Final velocity, v = ?
Acceleration, a= 5i + j - 4k
Time, t = ?
Distance between the points, d= √(8 - 3)² + (9 - 8)² + (4 - 8)²
= √25 + 1 + 16
= √42 m
We know that,v = v0 + at
On substituting the given values in the above equation, we get,
7 + a×t = v
⇒ v = 7 + (5i + j - 4k)×t
Now, the equation of motion can be given by the following equation,r(t) = r0 + v0t + 1/2at²
Here,r0 = (3i + 8j + 8k) is the initial position of the particle
On substituting the given values in the above equation, we get,
r(t) = 3i + 8j + 8k + (7i + 0j + 0k)t + (5/2i + 1/2j - 2k)t²
Hence, The particle's location vector at time t is represented by the equation:r(t) = 3i + 8j + 8k + (7i + 0j + 0k)t + (5/2i + 1/2j - 2k)t²
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What is the exposure response and prevention technique, and how can it help someone overcome a phobia?
The exposure response and prevention technique is a therapeutic approach used to help individuals overcome phobias. It involves gradually exposing the person to the feared object or situation in a controlled and supportive environment.
Here's how it works:
Assessment: The therapist first conducts an assessment to understand the specific phobia and its triggers. They gather information about the person's history, symptoms, and the intensity of their fear.
Education: The therapist educates the individual about the nature of phobias and how exposure can help reduce anxiety. They explain that avoidance only reinforces fear and that facing the fear is essential for overcoming it.
Creating a fear hierarchy: Together, the therapist and individual create a fear hierarchy, which is a list of situations related to the phobia, ranging from least to most anxiety-provoking. For example, if someone has a fear of flying, the hierarchy may include looking at pictures of airplanes, visiting an airport, and eventually taking a short flight.
Exposure: The person starts with the least anxiety-provoking situation on the fear hierarchy. They repeatedly expose themselves to this situation until their anxiety reduces significantly. This process is known as systematic desensitization. Once they feel comfortable, they move on to the next item on the hierarchy and repeat the process.
Response prevention: During exposure, the individual is encouraged to resist any safety behaviors or avoidance tactics that may decrease anxiety in the short term but hinder long-term progress. This helps break the cycle of fear and avoidance.
Gradual progression: The exposure continues, gradually progressing through the fear hierarchy until the person can confidently face the most anxiety-provoking situation without experiencing overwhelming fear.
By repeatedly exposing themselves to the feared object or situation, individuals can retrain their brains to respond differently, reducing the intensity of their fear over time. The exposure response and prevention technique can be highly effective in helping people overcome their phobias and regain control over their lives.
The exposure response and prevention technique is a therapeutic approach that involves gradually exposing individuals to their feared object or situation. By systematically confronting their fears and resisting avoidance behaviors, individuals can overcome phobias and reduce anxiety. This technique is based on the principle of systematic desensitization and can be a powerful tool in helping people regain control over their lives.
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1. battery, light bulb, switch, all connected in seriesDirections: Create a circuit diagram for each item.
ANSWER and EXPLANATION
When the components of a circuit are connected in series, they are connected along a single electrical path with each component having the same current flowing through it.
To draw the circuit diagram, use the appropriate symbol for each object. Let us draw it now:
That is the circuit diagram.
When electrons are moving it is called
A field
B electricity
C friction
D attraction
Find the frequency of voilet of its wavelength is 400cm
The frequency of the violet light is\(7.5 x 10^14 Hz (Hertz).\)
The frequency of the wave is determined by dividing the velocity of light by its wavelength.
\(v=f/λWhere:v = velocity of light f = frequency λ = wavelength of the light\)
The speed of light is\(3.00 x 10^8\) meters per second (m/s).
To convert 400 cm into meters, divide 400 by 100. 400 cm = 4 m
Therefore,λ = 4 meters
Plugging these values into the formula, \(v = (3.00 x 10^8 m/s) / (4 m) = 7.5 x 10^14 Hz\)
So, the frequency of the violet light with a wavelength of \(400 cm is 7.5 x 10^14 Hz.\)
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Nitrogen is heated to 500 k in a vessel of constant volume. if it enters the vessel at 50 atm and 330 k, what pressure would it exert at the working temperature if it behaved as a perfect gas?
By ideal gas approximation, the final pressure is 75.76 atm.
We need to know about the ideal gas theory to solve this problem. The ideal gas is assumed that there is no interaction between particles in a gas. It can be determined by the equation
P . V = n . R . T
where P is pressure, V is volume, n is the number of moles gas, R is the ideal gas constant (8.31 J/mol.K) and T is temperature.
From the question above, we know that
P1 = 50 atm
T1 = 330 K
T2 = 500 K
When the initial and final volume is the same, we can use the ratio of pressure and temperature as
P1 / P2 = T1 / T2
50 / P2 = 330 / 500
P2 = 50 x 500 / 330
P2 = 75.76 atm
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Water in a beaker gains thermal energy at a rate of 3000 W. The water is at its boiling point. The spesific latent heat of vaporisation of water is 2260 J/g. How long does it take for 250 g of the water to vaporise?
The amount of heat required to vaporize a certain amount of water is given by:
Q = ml
where Q is the amount of heat, m is the mass of water, and l is the specific latent heat of vaporization.
In this case, the heat energy supplied to the water is:
Q = Pt
where P is the power supplied and t is the time taken.
Since the water is at its boiling point, its temperature remains constant while it is vaporizing. Therefore, the energy supplied to the water is solely used for vaporization.
Equating the two expressions for Q, we have:
Pt = ml
Solving for t, we get:
t = ml / P
where m = 250 g and l = 2260 J/g.
Substituting the values, we get:
t = (250 g) x (2260 J/g) / (3000 W) = 0.1883 hours
Converting to minutes, we have:
t = 0.1883 hours x (60 minutes/hour) = 11.3 minutes (approx.)
Therefore, it will take approximately 11.3 minutes for 250 g of water to vaporize.
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An object is pulled to the left by a force of 100 N and to the right by a force of
80N. What is the net force acting on the object?
Answer: 20 N
Explanation: Net force is the sum of all forces acting on an object. For example, in a tag of war, when one team is pulling the tag with a force of 100 N and the other with 80 N, the net force would be 20 N at the direction of the first team (100 N - 80 N = 20 N).
How much work must be done to stop a 925-kg car
traveling at 95 km/h?
A direct current of 3.0 A flows through a circuit consisting of a battery and a 6.0 A resistor. Calculate the potential difference across the resistor. a
Question :-
A Direct Current of 3.0 A flows through a Circuit consisting of a Battery and a 6.0 Ohm's Resistor. Calculate the Potential Difference across the Resistor .Answer :-
Potential Difference is 18 Volt's .Explanation :-
As per the provided information in the given question, we have been given that the Current of the Device is 3.0 Ampere . The Resistance is given as 6.0 Ohm's . And, we have been asked to calculate the Potential Difference .
As we know ,
V = I RWhere ,
V denotes to Potential DifferenceI denotes to CurrentR denotes to ResistanceTherefore , by Substituting the given values in the above Formula :-
\( \sf {\dag \: \: \: Potential \: Difference \: = \: Current \: \times \: Resistance} \)
\( \sf {\Longrightarrow \: \: \: \sf Potential \: Difference \: = \: 3.0 \: \times \: 6.0} \)
\( \sf {\Longrightarrow \: \: \: \sf Potential \: Difference \: = \: 3 \: \times \: 6} \)
\( \bf {\Longrightarrow \: \: \: \bf {Potential \: Difference \: = \: 18 \: }} \)
Hence :-
Potential Difference = 18 Volt's .\( \underline {\rule {210pt}{4pt}} \)
Additional Information :-
\( \Longrightarrow \: \: \: \sf {Voltage \: = \: Current \: \times \: Resistance} \)
\(\Longrightarrow \: \: \: \sf {Current \: = \: \dfrac {Voltage}{Resistance} } \)
\(\Longrightarrow \: \: \: \sf {Resistance \: = \: \dfrac {Voltage}{Current} } \)
\( \underline {\rule {210pt}{4pt}} \)
Note :-
Kindly Scroll the Screen from Right to Left for Better View .28) Refraction results from differences in light's. A) frequency. B) incident angles. C) speed. D) all of the above. E) none of the above.
Refraction results from differences in light's speed. The correct answer is C) speed.
Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves). We are able to create lenses, magnifying glasses, prisms, and rainbows because to this bending caused by refraction.
Refraction occurs when light passes through different mediums and changes its speed. This change in speed causes the light to bend, creating the effect of refraction.
This is why objects appear to be in different positions when viewed through water or a lens. The frequency and incident angles of the light do not affect refraction, only the speed of the light does.
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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:
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A person strikes a ball with a bat. The temperature of the ball increases by 0.06ᵒC. What accounts for the increase?
The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.
Kinetic energy of a particle is directly proportional to its temperature.
A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.
Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.
Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.
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What is Average rainfall in the desert?
Answer:
less than 10 inches, or 25 centimeters, of precipitation a year.
Explanation:
PS. the precipitation recieved in the desert can be in the form of either rain or snow.
A 2 kg object with a weight of 20 N is being pulled up by a rope with a tension of 12N what is the acceleration of the object
Answer:
The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object.
Explanation:
Given;
mass of the object, m = 2 kg
weigh of the object, W = 20 N
tension on the rope, T = 12 N
The acceleration of the object is calculated by applying Newton's second law of motion as follows;
T = F + W
T = ma + W
ma = T - W
\(a = \frac{T-W}{m} \\\\a = \frac{12 - 20}{2} \\\\a = -4 \ m/s^2\) (the negative sign indicates deceleration of the object)
The object accelerates downward at 4 m/s² since the tension on the rope is less than weight of the object.
find the velocity of an air conditioner accidentally dropeed from a height of 300 m at the moment it hits the ground
Answer:
Explanation:
Answer 76.6812
The velocity of the air conditioner at the moment it hits the ground is approximately 76.63 m/s.
To find the velocity of an air conditioner dropped from a height of 300 m at the moment it hits the ground, we can use the principle of conservation of mechanical energy.
The potential energy of the air conditioner at the initial height is given by:
Potential Energy = mass * gravity * height
The kinetic energy of the air conditioner just before hitting the ground is given by:
Kinetic Energy = 0.5 * mass * velocity^2
According to the conservation of mechanical energy, the potential energy at the initial height is equal to the kinetic energy just before hitting the ground. Therefore, we can equate these two expressions:
mass * gravity * height = 0.5 * mass * velocity^2
The mass of the air conditioner cancels out, and we can solve for velocity:
gravity * height = 0.5 * velocity^2
velocity^2 = (2 * gravity * height)
velocity = √(2 * gravity * height)
Substituting the values, where gravity is approximately 9.8 m/s^2 and height is 300 m:
velocity = √(2 * 9.8 * 300) = √(5880) ≈ 76.63 m/s
Therefore, the velocity of the air conditioner at the moment it hits the ground is approximately 76.63 m/s.
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Calculate the pressure exerted by the elephant (24000 Newtons) on the ground, assuming that
the total area of its feet is 0.8 m2.
Answer:
3000 PaExplanation:
The pressure exerted by the elephant can be found by using the formula
\(p = \frac{f}{a} \\ \)
f is the force
a is the area
From the question we have
\(p = \frac{2400}{0.8} \\ \)
We have the final answer as
3000 PaHope this helps you
what is the type of cloud associated with a cold front?
A. Cirrus
B. Altostratus
C. Cumulus
D. Stratus
Answer:
C, cumulus your welcome :D
a tank with a diameter of 10m is open at the top and contains water that is 12m deep. there is a hole 1.0m from the bottom of the tank with a diameter of 0.02m. the speed of the water as it exits the hole is most nearly
The required speed of the water as it exits the hole is most nearly 17.9m/s. Given that a tank with a diameter of 10m is open at the top and contains water that is 12m deep. There is a hole 1.0m from the bottom of the tank with a diameter of 0.02m. We have to determine the speed of the water as it exits the hole.
Step 1: Calculate the volume of the water in the tank. We know, the volume of the water in the tank=πr²h, where r is the radius of the tank and h is the height of the tank. r = d/2 = 10/2 = 5m
Volume of the water in the tank= π(5)²(12)= 942m³
Step 2: Calculate the volume of the water below the hole. We know the volume of the water below the hole= πr²h, where r is the radius of the tank and h is the height of the water below the hole.r = d/2 = 0.02/2 = 0.01m
Volume of the water below the hole= π(0.01)²(11)= 0.0038m³
Step 3: Calculate the time taken for the water to exit from the hole using Torricelli's Theorem.The formula of Torricelli's Theorem is given asv = √(2gh), where g = 9.8 m/s² and h = 11m
Now, time, t = √(2h/g) = √(2 × 11/9.8) = 1.47s
Step 4: Calculate the speed of water as it exits the hole. We know,Volume of water that exits the hole = area of the hole × speed × timev = Q/A × twhere A is the area of the hole and Q is the volume of the water that exits the hole, A = πr² = π(0.01)² = 0.000314m²
Q = volume of water below the hole = 0.0038m³⇒v = Q/A × tv = 0.0038/0.000314 × 1.47v = 17.9m/s. Therefore, the speed of the water as it exits the hole is most nearly 17.9m/s.
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other astronomers were skeptical about percival lowell's claims of martian canals because
Many astronomers were skeptical about Percival Lowell's claims of Martian canals for several reasons.
First and foremost, the technological limitations of the time made it difficult to obtain clear and detailed observations of Mars. The telescopes available in Lowell's era were not powerful enough to discern fine surface details on the planet, leading to potential misinterpretations.
Furthermore, other astronomers failed to reproduce Lowell's observations and saw no evidence of the linear features he described as canals. They argued that the perceived canals could be optical illusions or artifacts resulting from poor atmospheric conditions or the limitations of the telescopes used.Additionally, advances in understanding Mars and its geology, particularly through space missions and improved telescopes, have provided a wealth of evidence contrary to Lowell's claims. Modern investigations have revealed that Mars does not possess an extensive network of artificial canals but instead exhibits natural features such as valleys, craters, and ancient riverbeds, which can be misinterpreted if not carefully analyzed.Consequently, due to these factors, skepticism prevailed among many astronomers regarding Percival Lowell's claims of Martian canals, and subsequent scientific advancements have provided a more accurate understanding of the Red Planet's surface features.
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