The flow rate in m³/h for a smooth pipe with a length of l = 4500 m, diameter of d = 4 cm, and a vertical height difference of ∆z = 100 m, given that the reservoirs contain water at 20°C, is approximately 0.073 m³/h.
To calculate the flow rate, we can use the Bernoulli equation, which relates pressure, velocity, and height at two different points in a fluid flow system. Neglecting minor losses, the Bernoulli equation for the two reservoirs can be written as:
P₁/ρ + v₁²/2g + z₁ = P₂/ρ + v₂²/2g + z₂
where P is pressure, ρ is density, v is velocity, g is the acceleration due to gravity, and z is height. At both reservoirs, the pressure is atmospheric, and the velocity is zero, so the equation simplifies to:
z₁ + v₂²/2g = z₂
we can solve for the velocity v₂ using the equation:
v₂ = √(2g(∆z))
where ∆z is the height difference between the two reservoirs. Substituting the given values, we get:
v₂ = √(2 × 9.81 m/s² × 100 m) = 44.29 m/s
Next, we can use the continuity equation, which states that the mass flow rate is constant at every point in a fluid flow system. The equation can be written as:
Q = Av = πd²/4 × v
where Q is the volumetric flow rate, A is the cross-sectional area of the pipe, and d is the diameter of the pipe. Substituting the given values, we get:
Q = π(4 cm)²/4 × 44.29 m/s × 3.6 × 10⁻³ = 0.073 m³/h.
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Fill in the missing word in this sentence. Changes in volume and density cause a gas in the atmosphere to rise as it is heated, and as a gas rises, its temperature __________.
Changes in volume and density cause a gas in the atmosphere to rise as it is heated, and as a gas rises, its temperature decreases.
What is volume and density about?As a gas is heated, the molecules that make up the gas gain energy and begin to move faster. As the molecules move faster, they collide with each other more frequently and with greater force, causing the gas to expand and its volume to increase.
As the gas expands, its density decreases, and its buoyancy increases, making it less dense than the surrounding air. When a gas is less dense than the surrounding air, it tends to rise, which is known as convection.
Therefore, As a gas rises, it experiences a decrease in temperature, this is due to the decrease in atmospheric pressure. When a gas rises, the pressure on it decreases, which causes the gas to cool down.
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gamma rays cannot be ___ or ____, but can cause_____.
Answer:
Gamma rays cannot be seen or felt, but can cause ionization.
Explanation:
Gamma rays are a type of electromagnetic radiation, similar to X-rays, radio waves, and visible light. They have the highest energy and the shortest wavelength in the electromagnetic spectrum. Gamma rays are emitted by the nuclei of atoms during certain types of radioactive decay.
Gamma rays cannot be seen or felt because they are electromagnetic waves, and not particles like visible light or sound waves. Gamma rays do not have enough energy to excite the atoms in our eyes, so we cannot see them. They also do not have enough energy to cause vibrations in our ears, so we cannot hear them.
Gamma rays can cause ionization when they interact with matter, meaning that they can knock electrons off atoms and molecules, creating ions. When gamma rays pass through matter, they can disrupt the electrons in atoms and molecules, which can cause damage to living cells and genetic material. This is why gamma rays are considered to be dangerous and are used in very limited circumstances, such as in cancer treatment, where the goal is to destroy cancer cells.
5- During the Canada Day fireworks demonstration, an observer measures the time difference between the
flash of light emitted, and the sound heard from the explosion to be 2.50 s. If the air temperature is 16°C.
how far away is the fireworks' explosion from the observer? (Velocity of sound is 345 m/s at 0 °C)
Answer:
Below
Explanation:
Speed of sound at 16 degrees C = 340.866 m/s
(Speed of sound at 0 degrees C is 331.3 m/s ....I do not know where they got the incorrect value of 345 m/s at 0 °C)
2.5 s * 340.866 m/s = 852 m away from fireworks
A force of 55 N is applied to a 7.3 kg bowling ball for 0.81 seconds.
If the bowling ball was initially at rest, what is the momentum of the bowling ball after the force was applied?
How fast is the bowling ball moving?
1. The momentum of the bowling ball after the force was applied is 397.5 Ns.
2. The bowling ball is moving at a speed of 48.7 m/s.
balance a table tennis ball on the edge of a ruler. what happened ?
When trying to balance a tennis ball on the edge of a ruler, the ball can only balance when the balance point of the ball is determined.
What is the balance point of an object?The balance point of an object such as a tennis ball is the point where the object balances.
Even though an object's weight exerts downward pressure on each of its constituent parts, it is typically thought of as exerting a single force through the object's center of gravity or balance point.
The object's geometric center serves as its balancing point if its weight is spread evenly throughout it.
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What was the average force the bumper exerted on the car over the 4 s period?
O A. 1,000 N
OB. 4,000 N
O C. 10,000 N
O D. 40,000 N
The dark region denotes the car's displacement over a 4-second time period. It can be determined as follows: (1/2)46 = 12 metres.
What is the average speed of a bumper car?Remember that a bumper car only travels at a speed of 5 mph on average. In an automotive crash test, a solid wall's average force on a 2500-kg car that hits the wall over a 0.22-s time period is measured to be 740,000 N.When a car collides with something at a low speed, the bumper will press backward to use the crumple zone to reduce the impact as the foam and fenders absorb the force. The bumper, fender, and foam crumpling restricts the amount of harm that may be done to the automobile and those inside of it.The average force is therefore equal to the body's mass times the average speed during a specific period of time.To learn more about determined refer to:https://brainly.com/question/30234949#SPJ1A radio wave has a frequency of 5.5 × 104 hertz and travels at a speed of 3.0 × 108 meters/second. what is its wavelength? a. 5.5 × 104 meters b. 5.0 × 103 meters c. 5.5 × 103 meters d. 3.0 × 108 meters
The wavelength of the radio wave is 5.5 × 10³ m. If the frequency of the wave is 5.5 × 10⁴ hertz and the speed of the wave is 3.0 × 10⁸ m/sec.
The speed(v) of a wave is the product of wavelength(λ) and the frequency(η). We can understand this relation by the definition of the speed, which is the distance travelled by the object in unit time. The unit of distance is meter, also the unit of the wavelength is meter. On the other hand the unit of frequency is sec⁻¹. So,
Speed of a wave(v) = wavelength(λ) × Frequency(η)
Wavelength(λ) = speed of the wave(v)/Frequency(η)
Wavelength(λ) = (3.0 × 10⁸)/(5.5 × 10⁴)
Wavelength(λ) = 5.5 × 10³ m
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A hole is drilled through the midpoint of a meter stick. The meter stick is
then suspended so that it spins freely about its midpoint. If the mass of
the meter stick is 0.25 kg, what is its rotational inertia about the midpoint?
The rotational inertia of the meter stick about the midpoint is 0.0625 kg·m²
What is Rotational inertia?Rotational inertia, or moment of inertia, is the measure of an object's resistance to angular acceleration. It is calculated by multiplying the mass of the object by the square of its distance from the axis of rotation.In this case, the meter stick has a mass of 0.25 kg and is rotating about its midpoint. This means the distance from the axis of rotation to each end of the meter stick is 0.5 m (since the midpoint is the axis of rotation).Therefore, the rotational inertia of the meter stick about its midpoint is: Rotational inertia = 0.25 kg x (0.5 m)² = 0.0625 kg·m²
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What is the kinetic energy of a 10 kg object moving at 2.0m S?
Answer: 20 J
Explanation: m = 10kg
v = 2 m/s
K.E of the object = 1/2 mv²
= 1/2 × 10 × 2 × 2
= 10 × 2
= 20 J
A crane and box are both initially at rest. At time t=0s, the crane begins to drive forward at a constant speed of 0. 5ms, while also lifting the box with an upward acceleration of 1ms2. The box does not swing while being lifted by the crane.
(c) Assume that, at t=0 s, the horizontal position of the box is x=0 and it has a vertical position of y=0. Derive an equation that describes the vertical position y of the box as a function of the horizontal position x of the box.
(d) Does your equation from part (c) agree with your sketch in part (b)? Justify your response
The equation that describes the vertical position y of the box as a function of the horizontal position x of the box is y = 1/2 x^2 + 0.5xt.
A crane and box are both initially at rest. At time t=0s, the crane begins to drive forward at a constant speed of 0. 5ms, while also lifting the box with an upward acceleration of 1ms2.
This equation agrees with the sketch in part (b) because it shows that the vertical position of the box increases as the horizontal position increases, as shown in the sketch. This equation also shows that the vertical position of the box increases with time at a rate of 1 m/s^2, which is the value used for the upward acceleration of the box.
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A car of mass 942.4 kg accelerates from rest with a constant power output of 140.5 hp. Neglecting air resistance , what is the speed of the car after 4.55 s?
The speed of the car after 4.55 s can be determined using the equation v = at, where v is the velocity of the car, a is the acceleration, and t is the time.
What is acceleration?
Acceleration is the rate of change of an object's velocity over time. It is the rate at which an object's speed or direction of motion changes. It is usually measured in meters per second squared (m/s2). Acceleration can be caused by a variety of forces, such as gravity, friction, or a push or pull.
Acceleration is the rate at which an object's speed or velocity changes over time. It is a vector quantity, meaning it has both a magnitude and a direction. Acceleration is typically measured in meters per second squared (m/s2).
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This is a second part to a worksheet for physics that I’d love help with
Thus, wave speed is the distance covered per second as opposed to wave frequency, which is the number of cycles that occur each second.
How significant is wave frequency?Waves transfer energy, to sum up. The amount of energy they carry is inversely proportional to their frequency and amplitude. Both frequency and amplitude climb with increasing energy, correspondingly.
What exactly is a simple wave frequency?Wave frequency is the quantity of waves passing a particular place in a predetermined period of time. The hertz (Hz), which measures wave frequency in SI units, is one hertz, or one wave crossing a fixed point in one second.
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A 1.5 kg block moves at 4 m/s moves along a frictionless horizontal surface. The block slides into a spring
with a spring constant of 240 N/m. How far is the spring compressed after the block comes to rest?
spring compresses 31.6 cm
kinetic energy of the block = potential energy of the spring
0.5mv^2 = 0.5kx^2
0.5*1.5*4^2 = 0.5*240*x^2
x = 0.316 m
so the spring compresses 31.6 cm
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Over the past few years, human use of coal has decreased in the United States. What has caused this effect on coal use?
A.
lower costs of other fossil fuels
B.
not including environmental costs in pricing
C.
relaxed regulations for air pollution
D.
falling prices for coal
summary of a article“what can i do to reduce my risk of developing cancer”
This article provides a comprehensive overview of the steps that can be taken to reduce the risk of developing cancer.
What is developing cancer?Developing cancer is a process in which abnormal cells in the body grow and divide uncontrollably. These abnormal cells can form tumors, invade other tissues, and spread to other parts of the body.
This article discusses ways to reduce the risk of developing cancer. It explains that there are many lifestyle changes that can be made to reduce the risk of cancer, such as eating a healthy diet, exercising regularly, avoiding smoking and excessive alcohol consumption, and limiting sun exposure. Additionally, the article suggests getting regular check-ups and screenings, as well as avoiding environmental toxins and pollutants. It also recommends getting vaccinated against certain viruses, such as HPV, which can increase the risk of certain types of cancer. Finally, the article emphasizes the importance of maintaining a healthy weight and reducing stress.
Overall, this article provides a comprehensive overview of the steps that can be taken to reduce the risk of developing cancer. By following the advice outlined in the article, individuals can take proactive steps to reduce their risk of developing cancer and improve their overall health.
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ence 2nd Quarter
Dominic made the table below to organize his notes about mixtures.
Properties of Mixtures
has no set composition
must have more than one state of matter
must have more than one substance
What mistake did Dominic make?
The title should read "Properties of Solutions" because some mixtures do not have all of the properties listed.
There is a definite recipe to make each mixture, so the composition of a mixture is set.
O Although it is possible to have more than one state, it is also possible to have only one state.
5
A single substance can be used to make a mixture if the substance is composed of more than one element.
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Although having multiple states is conceivable, it's also feasible to have just one.
Is it possible if it is feasible?This discrepancy is expressed by the phrases attainable and feasible, which are used in certain definitions of these synonyms. As is frequently the case, the Latin-derived phrase is utilized when technical specificity, distance, and an element of abstraction are required.
What does a project's viability mean?Project feasibility refers to the examination of a project's numerous components to ascertain whether it has the potential to succeed. Before a project starts, a business might assess its viability to spot challenges, develop plans to address them, and eventually draw in investors.
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a acrostic poem using the word "transformation" that summarizes what you've learned about kinetic and potential energy.
The acrostic poem using the word "transformation" that summarizes what you've learned about kinetic and potential energy is given below
Tremendous force creates motion
Releasing energy in every notion
Acceleration leads to kinetic state
New forms of energy await
Formed through a change in position
Action and reaction in succession
Invisible forces at work
Never-ending cycle that lurks
Energy in constant flux
Making the world go round with tucks.
What is the acrostic poem about?The first letter T stands for "Tremendous force" that creates motion, this is related to kinetic energy. Kinetic energy is the energy of motion, it is the energy that an object possesses due to its motion. The more motion an object has, the more kinetic energy it possesses.
Also, The second letter R stands for "Releasing energy" in every notion, this refers to the transformation of potential energy into kinetic energy. Potential energy is the energy an object possesses due to its position or state, this energy is stored and can be released as kinetic energy.
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A girl run at 5m/ for 2 econd, then walk at 4m/ for 3econd, an ride bicycle at 10m/ for 5econd what i average peed of the girl for the entire trip?
Answer:
Explanation:
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To find the average speed of the girl for the entire trip, we need to calculate the total distance covered and the total time taken.
Distance covered during running = speed x time = 5 m/s x 2 s = 10 m
Distance covered during walking = speed x time = 4 m/s x 3 s = 12 m
Distance covered during biking = speed x time = 10 m/s x 5 s = 50 m
Total distance covered = 10 m + 12 m + 50 m = 72 m
Total time taken = 2 s + 3 s + 5 s = 10 s
Average speed = Total distance covered / Total time taken
= 72 m / 10 s
= 7.2 m/s
A block with the mass of 14.26kg is on a ramp with an incline of 41 degrees. If the block is stationary, what is the minimum value of the coefficient of static friction? PART E
Answer: .86
Explanation:
Thank you for your help!
Answer:
Haemoglobin
Explanation:
I hope this helps you
Rodrigo was working really hard to make the track team and he finally made it. However, he is not one of the strongest runners and is becoming
rather discouraged because some of the other kids are obviously better athletes than he is: What does this example BEST illustrate?
A. why extrinsic motivation often fails.
B. why valuing exercise and health is not enough.
C. why joining a team is often really discouraging.
D. why there should be an interview when joining a team.
The answer of the following statement is (C) why joining a team is often really discouraging.
What is team?
Team refers to a group of two or more people who work together to achieve a common goal. A team usually consists of individuals with different skills and abilities who collaborate to complete a task or project. Teams are important in a variety of situations, including work, school, sports, and social activities. A successful team is one in which members are committed to the same goal, trust and respect one another, and are willing to take risks and learn from mistakes. Teams are most effective when members are open to constructive criticism, provide feedback, and are willing to put in the time and effort necessary to achieve their goals.
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You weigh 710 N. What would you weigh if the Earth were three times as massive as it is and its radius were five times its present value? Answer in units of N
Answer:
85.2 N
Explanation:
You want to know your weight if the Earth were 3 times as massive and had 5 times the present radius. Your weight is 710 N.
WeightYour weight is proportional to the mass of the Earth and the square of the radius between your mass and the center of the Earth. The revised dimensions of the earth would multiply your weight by ...
W = k(M/r²) = 710 N
W' = k((3M)/(5r)²) = k(M/r²)(3/25) = (710 N)(3/25) = 82.5 N
Your weight would be 82.5 N.
Block a, with a mass of 4 kg, is moving with a speed of 2. 0 m/s while block b, with a mass of 8 kg, is moving in the opposite direction with a speed of 3 m/s. The center of mass of the two block-system is moving with a velocity of:.
The center of the mass of the block-system is moving with a velocity of 1.3 meters per second in the same direction as B.
In this case, we are provided with:
The mass of block A (M1) = 4 kg
The speed of block A (V1) = 2.0 meters per second
The mass of block B (M2) = 8 kg
The speed of block B (V2) = 3.0 meters per second
Consider that block A is moving in a positive direction while block B moving the opposite way.
To find the velocity of the center of the mass of the two block system, we can use this following formula:
[tex]V = \frac{M1V1 + M2V2}{M1+M2}[/tex]
To find the answer, simply plug in all of the information that you already have into the equation:
[tex]V = \frac{(4 kg) (2m/s) + (8kg) (-3m/s)}{4 kg + 8 kg}[/tex]
V = -1.3 m/s
Because the sign is negative, we may deduce that the center of mass of the two-block system is traveling in the same direction as B at a speed of 1.3 m/s.
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What are the benefits to using solar geothermal and wind power as alternative sources of energy?
The benefits of using solar, geothermal, and wind power as alternative sources of energy are low maintenance, accuracy, and highly renewable respectively.
Reduced electricity expenses, a wide range of applications, and minimal maintenance costs are all benefits of solar energy. The fact that it depends on the weather, that solar energy storage is expensive, and that it takes up a lot of space are some of its drawbacks.
Geothermal energy has the benefit of making it simpler to anticipate power output with pinpoint accuracy. Cons of energy management include high costs and the need for sustainability.
The benefit of wind energy is that it is a very clean and renewable energy source. It is readily available and has a low running cost. The energy's drawback is that it contributes to noise and visual pollution.
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An atom that contains 6 protons 6 neutrons and 6 electrons has a mass of approximately.
The mass of an atom that have six protons; six neutrons; and six electron is 12. The mass of an atom is the total of its protons and neutron
What is protons, neutrons and electrons?Atom is the smallest structure of the chemical element. Atom contain protons, neutrons and electrons. Protons is a subatomic that contains positive electric charge where the electrons is a subatomic that contains negative electric charge or the opposite of the protons. Neutrons is a subatomic that contain no electric charge. The mass number of an atom is formulated as mass number = protons + neutrons. Hence:
mass number = protons + neutrons.
mass number = 6 + 6
mass number = 12
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A string of christmas lights contains 20 lights. The lights are wired in series, so that if any light fails, the whole string will go dark. Each light has probability 0. 98 of working for a 3-year period. The lights fail independently of each other.
The probability that a string of Christmas lights containing 20 lights are wired in series, so that if any light fails, the whole string will go dark = 0.6676 = 66.76%
There are just two conceivable outcomes for each light: either it works or it doesn't. The binomial distribution is utilized to answer this question since the likelihood that a light will operate independently of all other lights.
It's a binomial experiment. Since the bulbs are independent and there is only one way the string can stay lit
The success probability is:
1 -0.02 = 0.98
Hence, the probability that the string of lights will remain bright for 3 years is:
(0.98)²₀ = 0.667
= 66.67%
The question is incomplete, it should be:
Merry and bright? A string of Christmas lights contains 20 lights. The lights are wired in series, so that if any light fails, the whole string will go dark. Each light has probability 0.98 of working for a 3-year period. The lights fail independently of each other. Find the probability that the string of lights will remain bright for 3 years.
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A spring has a spring constant of 25 newtons per meter. The minimum force required to stretch the spring 0. 25 meter from its equilibrium position is approximately.
A spring has a spring constant of 25 newtons per meter. The minimum force required to stretch the spring 0. 25 meter from its equilibrium position is approximately 6.25 N.
The minimal force needed to stretch the wire is in the range of,
We knew that the force, extension, and spring constant are connected by the following formula according to Hooke's law:
Extension (E) = Force (F) x Spring constant (K) (e)
F = Ke
We may calculate the spring's extension from its equilibrium position using the aforementioned method.
F = ke
F= 25 x0.25
F= 6.25
Therefore, 6.25 N of minimum force is needed in the scenario described.
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The driver of a car travels 150 miles to reach his destination. If he travels 60. 0 mi/h for 100 miles and 55. 0 mi/h for the remaining 50. 0 miles, what was his average velocity for the trip?.
The average velocity of that driver is 58 mi/h.
How to find the average velocity for that driver?As per data given:
first velocity (V1) = 60 mi/h
first distance (s1) = 100 miles
second velocity (V2) = 55 mi/h
second distance (s2) = 50 miles
First, we have to find the time spend that driven in first 100 miles by calculate it as follow:
V1 = s1 : t1
60 = 100 : t1
t1 = [tex]\frac{10}{6}[/tex] h
Then calculate the second condition in 50 miles:
V2 = s2 : t2
55 = 50 : t2
t2 = [tex]\frac{10}{11}[/tex] h
then calculate the average velocity:
Average velocity = total distance / total time
Average velocity = 150 : ([tex]\frac{10}{6}[/tex] + [tex]\frac{10}{11}[/tex] )
Average velocity = 58.2352941176
Let round the value to 58 mi/h. Hence, the average velocity of the driver is 58 mi/h
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Virginia currently has two nuclear power plants located in Mineral, VA and Surry, VA. Imagine you live in Wytheville, VA, which is in the western arm of the state. If your local government decided to build a nuclear power plant, consider how the people in your community would feel about this decision.
In complete sentences, discuss the following:
At least one benefit (positive outcome) of nuclear power discussed in this module (2 points)
At least one drawback (negative outcome) of nuclear power discussed in this module (2 points)
Based on this information, how would you feel about a nuclear power plant being built in your area? Explain why you feel this way. (2 points) HELP PLEASE
Located in Louisa County, Va, in the Mid-Atlantic region of the United States, the 1,075-acre North Ana Nuclear Power Plant is a nuclear power station. The Duke Virginia Power corporation and the Old Dominion Corporation jointly own the property, which is run by the Dominion Generation company.
What do you mean by nuclear?
The energy found in an atom's nucleus, or core, is referred to as nuclear energy. Electricity can be produced using nuclear energy, but it first needs to be freed from the atomic. 8 - 12+ Picture.
Which are the 3 different nuclear types?
Rocks, sunlight, and cosmic rays all emit tiny quantities of radiation that are constantly absorbed by all living organisms. Three kinds of radiation are taken into account in this background sheet: -particles, -particles, and -rays.
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What is the relationship of the gravitational force between the earth and the moon