A disc plough has a width of 1.8 m and operates at a speed of 7.5 km/hr. In an actual field operation, the actual width of cut was 1.4 m. The total time lost per hectare due to turning at row ends and minor adjustments was 45 minutes. Calculate the field efficiency

Answer:

ALL CAREFULLY ANSWERED CORRECTLY

Explanation:

1) A loaf of Bread PHYSICAL SYSTEM

✓ How can the environment affect the edibility of the bread

✓ What are the constituents that makes up the bread

✓ What process is involved in these constituents mixing to form the loaf.

2) The law of thermodynamics makes us to understand that when heat/energy passes through a system, the systems internal energy changes with respect to the conservation of energy law. That is energy lost = energy gained. Typically, ice would melt in a cup of hot tea because of the thermal energy in the molecules of the hot tea. When you heat a material, you are adding thermal kinetic energy to its molecules and usually raising its temperature. The temperature of the ice raises due to the kinetic energy added to it and it melts to water.

3) The theory of systems view the world as a complex system of interconnected parts. If we consider the society; (financial systems, political systems, etc) we will agree that they individually have their own components and it's the summation of this components that makes the system, this implies that system thinking could be applicable in this kinda of systems as long as they are made up of components.

4) Technology has boosted every sector of our lives and it has the capacity to do more. Restricting it's importance to entertainment alone would be an underusing of its potentials. Engineering students infact should not need any drive to be encouraged about maximizing all it can do in shaping our world.

5) ~ Nature shows its splendid soul

~Never ceases to leave us in amazement

~And we are in love

An object that contains a physical system is a T.V. remote control. Three questions that contain physical systems are:

Sensors, motors, and robots are examples of physical systems. The use of the TV remote controls, traffic lights, security systems, air conditioning systems, and automatic doors are just a few examples given. We give explanations for why we employ physical systems.

A physical system is made up of components or elements that when put together display behavior that its component parts alone do not. (Biological systems and living systems are included in this definition.) The two components of physical systems are matter and energy.

Therefore, a TV remote control is an item that houses a physical system. Three questions are:

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According to the information we can infer that a references regarding a synchronous machine are "Synchronous Generators" by Ion Boldea and Syed A. Nasar, "Synchronous Machines" by C.V. Joshi

A synchronous machine is a type of electrical machine that operates based on the interaction between a rotating magnetic field in the stator and a magnetic field produced by the rotor.

The operation of a 3-phase synchronous machine involves the generation of a rotating magnetic field by the stator windings, which induces a voltage in the rotor windings.

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The three references regarding synchronous machines are :

1. Title: Electric Machinery and Transformers

2. Title: Electric Machines and Drives: Principles, Control, Modeling, and Simulation

3. Title: Synchronous Generators, Second Edition

3-phase synchronous machine has stator connected to 3-phase AC supply & rotor windings excited by DC. The synchronous machine operates via the interaction between the rotating magnetic fields of the stator and rotor.

When AC is connected, it creates a rotating field. Rotor windings create DC magnetic field. Rotor poles match stator poles. The magnetic fields cause rotor and stator alignment. The rotor matches the stator's magnetic field and rotates together.

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The true power is obtained as 70.7 VA.

We define the power a the rate of doing work, we know that the power in a circuit is the product of the current and the voltage. In this case, we want to find the true power thus we have to involve the use of the phase shift in degrees.

Thus;

True power = PcosΦ

P =  100 VA

Φ = 45 degrees

True power =  100 VA * cos 45 degrees

True power = 70.7 VA

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The only process I can think of that would satisfy the conservation of energy principle but does not occur in nature is a perpetual motion machine.

Perpetual Motion Machine would produce work indefinitely without any external input of energy, thus violating the first law of thermodynamics which states that energy cannot be created or destroyed, only converted from one form to another.

While it is theoretically possible to design a machine that appears to produce more energy than it consumes, such a machine cannot exist in reality due to the various energy losses that occur in any real-world system.

These losses can occur due to factors such as friction, heat transfer, and resistance in electrical circuits, among others.

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Answer:

\(\eta =46\%\)

Explanation:

Hello!

In this case, we compute the heat output from coal, given its heating value and the mass flow:

\(Q_H=60\frac{tons}{h}*\frac{1000kg}{1ton}*\frac{1h}{3600s}*\frac{30,000kJ}{kg}\\\\Q_H=500,000\frac{kJ}{s}*\frac{1MJ}{1000J} =500MW\)

Next, since the work done by the power plant is 230 MW, we compute the efficiency as shown below:

\(\eta =\frac{230MW}{500MW}*100\% \\\\\eta =46\%\)

Best regards!

The correct order of ductile properties is: metal > plastic > ceramic. This means that metals are the most ductile, followed by plastics, and then ceramics.

Ductility refers to a material's ability to deform under tensile stress without breaking. In other words, ductile materials can be stretched into thin wires or rolled into thin sheets without cracking or breaking. This property is important in many applications, such as in construction, manufacturing, and engineering.

                                        Metal alloys like steel and aluminum are commonly used in applications that require high ductility, while ceramics are often used in applications that require high strength and hardness but not necessarily ductility.
The correct order for materials based on ductility is: metal>plastic>ceramic.

Ductility refers to a material's ability to be drawn out into a thin wire or be deformed without breaking. Metals generally have the highest ductility, followed by plastics, and ceramics tend to have the lowest ductility.

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If a particle's position is described by the polar coordinates, it is necessary to understand the polar coordinate system and the different aspects related to it.

Polar coordinates are a two-dimensional coordinate system where each point on a plane is identified by its distance from a fixed point and its angle from a fixed direction.In the polar coordinate system, a point is represented by an ordered pair (r,θ), where r is the distance from the origin to the point, and θ (theta) is the angle between the x-axis and the line segment connecting the origin to the point. T

o represent a point in the polar coordinate system, draw a line from the origin to the point. The angle θ is the angle that the line makes with the positive x-axis. The distance r is the length of the line.In terms of the particle's position described by polar coordinates, it's important to know its distance r and angle θ from the origin.

The polar coordinate system is useful in fields like physics and engineering to study problems with symmetry, like the motion of planets around the sun. In conclusion, polar coordinates are essential for describing positions, distances, and angles in the two-dimensional plane.

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Answer:

Steampunk Mechanical

Explanation:

Your welcome

The six steps in the supply chain management process are as follows: plan, source, make, deliver, return, and enable. Research and development refers to the process of researching and developing new products or services that meet the needs of customers.

This step is important because it helps companies stay competitive in the market and meet the changing needs of consumers. Inbound logistics refers to the process of receiving, storing, and distributing materials and components needed for production. This step is crucial in ensuring that the production process runs smoothly and that there are no delays or shortages of materials. Operations refer to the actual production process, including the manufacturing and assembly of products.

This step is important because it ensures that the products are produced efficiently and to a high quality. All six steps in the supply chain management process are important to ensure that a company can produce and deliver products or services to its customers effectively and efficiently.

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The possibility that at least three queries will be observed in a 4-microsecond interval is 0.3233. The chance that at least one query will be found in a 1-microsecond interval is 0.3297.

It states the number that reflects a chance of a particular event occurring, it can be expressed in the proportion from 0 to 1 or expressed in percentages ranging from 0% to 100%.

At least three queries will be processed in a 4-microsecond interval having the probability that is

So, 1 - 0.6767 = 0.3233.

For in a 1-microsecond interval is:

So, 1 - 0.6703 = 0.3297.

Therefore, for a 4-microsecond it is 0.3233, and for a 1-microsecond interval, it is 0.3297.

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hooooooooooooooooooooooooooooooooooooooooooooooooooooooe    

Answer:

please mark me as BRAINLIEST

Explanation:

There are so many software packages available to develop HTML. The software packages can be grouped into two main categories: text-based (or code-based) editors.

...

WYSIWYG editors

Macromedia Dreamweaver.

Microsoft FrontPage.

Adobe GoLive.

Since Sarah is developing a black-and-white photograph. The ratio that she should mix the fixer solution is option B. 1-2.

The kind of project you're shooting will determine the appropriate aspect ratio to utilize. As a starting point, we advise utilizing 16:9 for films as well as 4:3 for images.

There is no way to go wrong with either of them because this is a good common standard.

One do advise that a person can experiment with various aspect ratios as you acquire experience and wish to try more artistic photos. This can give your content a completely new perspective.

Therefore, Since Sarah is developing a black-and-white photograph. The ratio that she should mix the fixer solution is option B. 1-2.

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Answer: A prototype

Explanation:

The scale model that proves the initial concept is called a domain model.

A copy or depiction of something where all parts have the same dimensions as the original. A scale model is an image or copy of an object that is either larger or smaller than the object being represented's actual size.

A domain model is a type of conceptual model that is used to depict the structural elements and conceptual constraints within a domain of interest.

A domain model will include all of the entities, their attributes, and relationships, as well as the constraints that govern the conceptual integrity of the structural model elements that comprise that problem domain.

Therefore, a domain model is the scale model that proves the initial concept.

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Their HVACR technician advises against it because of the residential energy costs from HVAC units.

hat is the cost energy?

Energy Cost is known to be a term that connote the cost of electricity and this is one that is often related to fuel oil, gasoline, heating oil, natural gas, as well as other kinds or source of energy linked to any operation.

Hence, Since family in Florida heard about evaporative coolers as a way to cool their home without the expenses of a refrigerated air conditioning system. Their HVACR technician advises against it because of the residential energy costs from HVAC units.

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A warning sign is a sort of sign that signals a potential threat, barrier, or circumstance that calls for extra care. Some are road dangers that are indicated by traffic signs but may not be immediately obvious to a vehicle.

Although warning traffic signs come in a variety of styles, they often have an equilateral triangle shape with a white background and a heavy red border. They appear with a black border and a yellow background in the People's Republic of China (apart from Macau and Hong Kong). They have a crimson border with an amber backdrop in Poland, North Macedonia, Serbia, Bosnia and Herzegovina, Greece, Finland, and Sweden. The Svalbard polar bear warning sign has switched from showing a black bear on a white background to one that is white.

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In engineering notation, the coefficient must always be greater than or equal to 1 and less than 1000. Engineering notation is a way to express numbers using a power of 10 that is a multiple of 3. It is commonly used in engineering and scientific fields to represent very large or very small numbers.

To convert a number to engineering notation, you need to move the decimal point to create a coefficient between 1 and 999. If the original number is less than 1, you move the decimal point to the right. If the original number is greater than or equal to 1000, you move the decimal point to the left.

For example, if you have the number 3500, you would move the decimal point to the left two places to get 3.5. This gives you a coefficient between 1 and 999. Then, you would multiply the coefficient by 10 raised to a power of 3 to represent the original number in engineering notation. In this case, it would be 3.5 x 10^3.

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The easiest way for the hotel to control for potential bias in their statistics would be to survey visitors at various periods throughout the year.

The hotel can make sure that the data in its survey of visitors is representative of those who stay there during various seasons, for various periods of time, and through various booking channels by conducting surveys of guests at random times throughout the year.

By solely surveying specific visitor subsets, any potential bias that might result will be reduced.

The most popular kind of guest satisfaction survey is the post-stay survey, which is given to guests after they have left the property and asks them about various elements of their stay.

Therefore, The easiest way for the hotel to control for potential bias in their statistics would be to survey visitors at various periods throughout the year.

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We will prove that the machine accepts w by demonstrating that it ends in state D when w is input. Because w ends with 101, it can be decomposed into three parts: w = xyz, where x and y are arbitrary (possibly empty) strings over {0,1}, and z = 101.

A deterministic finite state machine (DFSM) can be used to recognize the language L, which consists of all strings over the alphabet {0,1} that end with 101. The machine should have at least one accepting state, indicating that the input string is in the language.

For the language L, the following is the deterministic finite state machine (DFSM):The machine has four states, which are labeled A, B, C, and D. The machine starts in state A, which is the initial state. The machine accepts the input string if it ends in state D.

A transition from state A to state A is possible on input 0 or 1. A transition from state A to state B is possible only on input 1. A transition from state B to state B is possible on input 0 or 1. A transition from state B to state C is possible only on input 0. A transition from state C to state D is possible only on input 1. All other transitions are impossible.

We can now show that this machine accepts the language L.Let w be any string in L, so w ends with 101. We will prove that the machine accepts w by demonstrating that it ends in state D when w is input. Because w ends with 101, it can be decomposed into three parts: w = xyz, where x and y are arbitrary (possibly empty) strings over {0,1}, and z = 101.

The machine starts in state A. After reading x, it is still in state A. After reading y, it enters state B. After reading 10 (the first two digits of z), it is still in state B. Finally, after reading the digit 1, it enters state C.

After reading z, it is in state D, which is the accepting state. This completes the proof that the machine accepts w, so L is recognized by the machine. Provides the steps to design a deterministic finite state machine to accept the language L.

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You need to configure a DNS A record for the intranet site's hostname to map it to the correct IP address.

What is DNS?
DNS, or Domain Name System, is an internet protocol used to translate domain names, such as www.example.com, into IP addresses, such as 192.168.2.1, that computers can understand and use to communicate with each other. DNS acts as a directory service, providing a link between domain names and their associated IP addresses, which are stored and managed in a distributed database system. DNS is essential for the functioning of the internet, allowing users to access websites and services without having to remember their numerical IP addresses. DNS works by querying a distributed network of DNS servers, which maintain a database of IP addresses and their corresponding domain names. When a DNS query is made, the DNS server looks up the requested IP address in its database and returns it to the user. DNS is an important part of the internet infrastructure and is used by many different types of services, such as email, web hosting, and streaming services.

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Answer: 162.4

Sorry if you get it wrong :(

Explanation:

To exert a pressure of 1.4 atm at 430 K and occupy a volume of 15.1 L, approximately 21.1 moles of H2 gas are necessary.

Let's solve the problems using the ideal gas law (PV = nRT) and show the work for each problem:

A. What is the volume of 0.5 moles of gas at STP?

Given:

n = 0.5 moles

R = 0.0821 L·atm/(mol·K) (ideal gas constant)

T = 273 K (standard temperature)

Using the ideal gas law, we can rearrange the formula to solve for volume (V):

V = (nRT) / P

Substituting the given values:

V = (0.5 moles * 0.0821 L·atm/(mol·K) * 273 K) / 1 atm

V = 11.2 L

Therefore, the volume of 0.5 moles of gas at STP is 11.2 L.

B. How much pressure would 0.8 moles of a gas at 370 K exert if it occupied 17.3 L of space?

Given:

n = 0.8 moles

R = 0.0821 L·atm/(mol·K) (ideal gas constant)

T = 370 K

V = 17.3 L

Using the ideal gas law to solve for pressure (P):

P = (nRT) / V

Substituting the given values:

P = (0.8 moles * 0.0821 L·atm/(mol·K) * 370 K) / 17.3 L

P = 1.4 atm

Therefore, the pressure exerted by 0.8 moles of gas at 370 K, occupying 17.3 L of space, is 1.4 atm.

C. How much H2 gas is necessary to exert a pressure of 1.4 atm at 430 K if occupying a volume of 15.1 L?

Given:

R = 0.0821 L·atm/(mol·K) (ideal gas constant)

T = 430 K

P = 1.4 atm

V = 15.1 L

Using the ideal gas law to solve for the number of moles (n):

n = (PV) / (RT)

Substituting the given values:

n = (1.4 atm * 15.1 L) / (0.0821 L·atm/(mol·K) * 430 K)

n = 21.1 moles

Therefore, to exert a pressure of 1.4 atm at 430 K and occupy a volume of 15.1 L, approximately 21.1 moles of H2 gas are necessary.

Please note that the values obtained from the Gizmo may vary slightly due to rounding or the use of slightly different values for the ideal gas constant.

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Answer:

the answer is airfoil

Explanation:

hope the answer helps

Answer:

It is called the airfoil

Explanation:

The answer is D. ( airfoil) because an airport is a place. Air raid is a attack in the air and that only leaves airfoil, so airfoil is the correct answer.(Hoped that helped)

Multiple intake and exhaust valves per cylinder, C) Increase volumetric efficiency

Exhaust valves open to allow the release of exhaust gases from the combustion process after ignition has taken place, whereas intake valves open to allow the entry of an air/fuel mixture into the engine's cylinders prior to compression and ignition.

Each cylinder has several intake and exhaust valves, which improves volumetric efficiency.

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The expression for the pressure gradient is given below: (image)

Pressure gradient denotes the alteration in atmospheric pressure over an indicated distance. Essentially, it measures how quickly the pressure changes regarding distance, figuring by dividing the variation of pressure by the range for which such alteration happens.

Regarding meteorology, the force and direction of winds closely associate to pressure gradient's influence. There exists a flow of air from high amounts of pressure towards low ones; thereby, a greater difference of pressure over a given distance results on far stronger winds causing effects.

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The kind of attack that the PDC Bank application is subjected to due to compromised data is: Adversarial artificial intelligence

Adversarial artificial intelligence is a form of attack on a neural network where a wrong algorithm is entered into the system to deceive the end user.

The aim of this machine learning method is to deceive the end user.

This is what happens to the PDC Bank when its data was compromised in the course of improving the machine learning accuracy.

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