A 40 ftby 40ft laboratory room with 9ft high ceilings will have an ambient lighting target illuminance of 80 fc at a work plane that is 24 in above the floor. It is anticipated that the ceiling reflectance is 0.80 and the average wall reflectance is about 0.7. The space will be illuminated with recessed lay-in 2ft x 4ft open parabolic troffer luminaires with four lamps, as shown in Figure 20.16. The initial output of the fluorescent lamps is 2950 lumen. The light loss factor will be assumed to be 0.70. Draw the scenario showing the ceiling, floor, and room cavity together with the room dimensions . (This is the only thing that was given to us)
Answers
The given information allows for a visual representation of the laboratory room and its lighting setup, but the specific details and diagram in Figure 20.16 cannot be provided in this text-based response. The ambient lighting target illuminance is 80 foot-candles (fc) at a work plane located 24 inches above the floor.
The ceiling reflectance is assumed to be 0.80, and the average wall reflectance is approximately 0.7. The initial output of the fluorescent lamps is 2950 lumens, and a light loss factor of 0.70 will be considered. To illustrate the scenario, a visual representation of the laboratory room is necessary, including the dimensions and relevant lighting elements. However, as the given text indicates that a figure (Figure 20.16) is provided, it cannot be included in this text-based response. The information suggests that the room will be equipped with recessed lay-in 2ft x 4ft open parabolic troffer luminaires, which are common lighting fixtures for commercial spaces. These luminaires typically consist of four fluorescent lamps, and the initial output of each lamp is given as 2950 lumens. The desired illuminance level at the work plane is 80 fc, which indicates the amount of light needed for comfortable and functional lighting in the laboratory. The light loss factor of 0.70 takes into account factors such as lamp depreciation, dirt accumulation, and other losses that may occur over time. The ceiling and wall reflectance values provided (0.80 and 0.7, respectively) are essential for calculating the overall light distribution and ensuring proper illumination throughout the room.
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Related Questions
b) Discuss the recent trends in Production and operations management.
Answers
Explanation Operations management is an area of management concerned with designing and controlling the process of production and redesigning business operations in the production of goods or services.[1] It involves the responsibility of ensuring that business operations are efficient in terms of using as few resources as needed and effective in meeting customer requirements.
The answer is all income (&) expenses
Answers
Answer:
NICE
Explanation:
If an improvement creates no significant change in a product’s performance, then it is a(n) design improvement.
Answers
Answer:
Following are the responses to these question:
Explanation:
They might believe that it was an enhanced layout because the quality is not updated. For instance, its new XS Max iPhone does have a better display than the iPhone X, however, the performance wasn't enhanced. It also has the same processor or graphic cards however a bigger pixel every centimeter ratio. When its output AND is not altered, the layout doesn't change, basically the very same item.
Answer:
If an Improvement creates no significant change in a product’s performance, then it is a(n) Superficial design improvement.
Explanation:
DIFFERENT BREED!
In order of decreasing size (largest listed first), sedimentary grain sizes include __.
A. clay, sand, silt, and gravel
B. gravel, sand, clay, and silt
C. sand, gravel, silt, and clay
D. gravel, sand, silt, and clay
E. gravel, silt, sand, and clay
Answers
The correct order of decreasing size for sedimentary grain sizes is D) gravel, sand, silt, and clay.
Grain size is an important characteristic of sedimentary rocks, and it affects their appearance, texture, and properties. Sedimentary grains can range from very small (clay-sized particles) to very large (gravel-sized particles). The order of decreasing grain size is determined by the settling velocity of each grain size in water. Gravel-sized particles settle the fastest, followed by sand, silt, and clay. Therefore, sedimentary rocks that are composed of larger grains (like gravel) are typically deposited in high-energy environments, such as near rivers, while sedimentary rocks with smaller grains (like clay) are typically deposited in low-energy environments, such as deep ocean basins.
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The roof of a house has three layers: (1) 2 inch thick pine, (2) 4 inches of fiberglass insulation and (3) 0.1 inch thick Asphalt shingles. Calculate the rate of flow of heat (BTU/hour) through the roof. The temperature inside the house is 700F and the temperature outside is 300F. The R/inch for pine is 1.28, the R/inch for fiberglass is 3.0 and the R/inch for Shingles is 4.0. Take the area of the roof to be 500 square feet. The Unit of R is mixed: ft2 . 0F.h/BTU
Answers
Answer:
the rate of flow of heat through the roof is 45616.858 BTU/hr
Explanation:
Given the data in the question;
pin thickness \(t_p\) = 2 in
fiber glass thickness \(t_f\) = 4 in
Asphalt shingles thickness \(t_a\) = 0.1 in
R/inch for pine = 1.28
R/inch for fiberglass = 3.0
R/inch for Shingles = 4.0
Temperature inside the house \(T_{inside\) = 700 F
Temperature outside the house \(T_{outside\) = 300 F
area of the roof A = 500 ft²
we calculate the total Resistance;
R = ( 2 × 1.28 ) + ( 4 × 3.0 ) + ( 0.1 × 4.0 )
R = 2.56 + 12 + 0.4
R = 14.96
Now, we determine the rate of heat flow;
dQ/dt = ΔT(A) / R
⇒ ( \(T_{inside\) - \(T_{outside\) )A / R
we substitute
⇒ (( 700 - 300 ) × 500 ) / 14.96
⇒ ( 400 × 500 ) / 14.96
⇒ 200000 / 14.96
⇒ 13368.98 watt
we know that 1 watt = 3.412142 BTU/hr
⇒ ( 13368.98 × 3.412142 ) BTU/hr
⇒ 45616.858 BTU/hr
Therefore, the rate of flow of heat through the roof is 45616.858 BTU/hr
the dealer's coast of a car is 85% of the listed price. The dealer would accept any offer that is at least 500 dollar over the dealer's cost. design an algorithm that prmpts the user to input the list price of the car and print the least amount that the dealerr would accept for the car
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The dealer would accept any offer that is at least 500 dollars over the dealer's cost The algorithms for your query are 1) Declare list Price as a double READ list Price• Declare and initialize most-0.85*list Price+500.0.
What is an easy definition of a set of rules?A set of rules is a method used for fixing a hassle or acting a computation. Algorithms act as a specific listing of commands that behavior certain moves grade by grade in both hardware- or software-primarily based totally routines. Algorithms are broadly used during all regions of IT.
Function calculateAvg(Scores) Declare and initialize SUM as double identical to 0 • For i=1 to length(Scores) SUM=SUM+Scores.get(i).EndLoop- Return SUM/length(Scores) EndFunction- Function printBelowAvg(Names, Scores)Define and claim AVG=calculateAvg(Scores), For i=1 to length(Scores) If Scores.get(i)MAX then MAX=Scores.get(i) Endif, EndLoop.RETURN MAX-EndFunction- Function blended Perform(Names, Scores).PRINT calculateAvg(Scores), print BelowAvg(Names, Scores)PRINT highestScore(Scores), EndFunctionCall the characteristics as combinedPerform(Names, Scores)Kindly revert for any queries.Read more about the algorithm :
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If a horizontal force of P = 100 N is applied to the 300-kg reel of cable, determine its initial angular acceleration. The reel rests on rollers at A and B and has a radius of gyration of k O = 0.6 m.
Answers
The initial angular acceleration of the reel of cable is 1.11 rad/s².
To determine the initial angular acceleration of the reel of cable, we need to use the equation τ = Iα, where τ is the torque applied to the reel, I is the moment of inertia, and α is the angular acceleration.
First, we need to find the torque applied to the reel. Since a horizontal force of P = 100 N is applied to the reel, the torque is given by τ = Fr, where F is the force and r is the radius of the reel.
τ = 100 N * 0.6 m = 60 N*m
Next, we need to find the moment of inertia of the reel. The moment of inertia of a solid cylinder is given by I = ½mr², where m is the mass of the cylinder and r is the radius of gyration.
I = ½ * 300 kg * (0.6 m)² = 54 kg*m²
Now we can plug in our values into the equation τ = Iα and solve for α:
60 N*m = 54 kg*m² * α
α = 1.11 rad/s²
Therefore, the initial angular acceleration of the reel of cable is 1.11 rad/s².
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Feature toggles are useful for which activity?a) To enable continuous testingb) To prevent testing complexityc) To decouple deployment from released) To enable continuous code integeration
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It is to be noted that Feature toggles are useful "To enable continuous code integration" (Option D)
What are Feature Toggles?A feature toggle is a method in software development that allows code to be turned "on" or "off" remotely without the need for a deploy. Product, engineering, and DevOps teams frequently employ feature toggles for canary releases, A/B testing, and continuous deployment.
In software development, a feature toggle is an alternative to keeping numerous feature branches in source code. During runtime, a condition in the code enables or disables a functionality. In agile environments, the toggle is used in production to turn on a feature on demand for certain or all users.
Feature flags and toggles are no longer merely best practices for software delivery, but are now increasingly essential for business operations. With the correct feature management platform, you can test new code securely, receive real-time feedback, and iterate rapidly.
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shoes with thic ____________ protect feet from protruding nails and othjer charp ojects\
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The term that is missing from the statement is soles. Shoes with thick soles protect feet from protruding nails and other sharp objects. The sole of a shoe is the bottom part of the shoe that comes into contact with the ground. In other words, it's the layer that lies between your foot and the shoe's upper part.
Sole can be made from a variety of materials, including rubber, leather, or a combination of the two. The sole of a shoe must be well-constructed to provide adequate protection for the feet. These types of shoes are commonly referred to as safety shoes or work boots. They are designed to provide extra protection for the feet in hazardous environments, such as construction sites or industrial settings. The thick soles act as a barrier between the feet and the ground, reducing the risk of injury from sharp objects or punctures. Additionally, safety shoes often feature reinforced toe caps, which provide further protection for the toes from heavy objects or compression.
Therefore, shoes with thick soles provide greater comfort, protection, and cushioning to the feet. Thick-soled shoes protect the feet from sharp objects that may be on the ground while walking.
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use dimensional analysis to show that the units of the process transconductance parameter k'n are a/v2. what are the dimensions of the mosfet transconductance parameter £„?
Answers
The process transconductance parameter k'n is a fundamental parameter of MOSFETs that is used to define the transconductance of a MOSFET.
It is given by the expression: k'n = µnCox / 2L.
The dimensional analysis of the process transconductance parameter k'n can be performed by expressing each variable in terms of their dimensions as follows:
Dimensions of mobility (µn) = L² T⁻¹ V⁻¹
Dimensions of gate oxide capacitance (Cox) = L⁻² T² Q⁻¹.
Dimensions of channel length (L) = L
Dimensions of the transconductance parameter k'n = [(L² T⁻¹ V⁻¹) × (L⁻² T² Q⁻¹)] / (2L) = T⁻¹ Q⁻¹ V⁻¹.
The dimensions of the MOSFET transconductance parameter £„ are the same as those of the process transconductance parameter k'n, i.e., T⁻¹ Q⁻¹ V⁻¹.
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I need a word problem for y=2x
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The word problem for y = 2x is as follows.
"If y is the number of cakes produced by using 2 amounts of backing ingredients (x), find the number of cakes produced if x is 25."
What is a word problem?A word problem is a mathematical exercise in scientific education in which substantial background information about the subject is conveyed in regular English rather than mathematical notation.
A word problem in mathematics is a math question expressed as one or more sentences that demand students to apply their arithmetic skills to a real-life setting.
This implies that in order to understand the word problem, students must be conversant with the terminology linked with the mathematical symbols to which they are used.
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Which of the following is NOT a factor that contributes to the annual cost to own an automobile
a
vehicle color
b
repairs
c
fuel
d
maintenance
Answers
Answer:
a. vehicle color
Explanation:
One might expect that the cost of owning a vehicle would not be a function of its color. There is no reason to believe that a blue car gets better gas mileage than a green car of the same make, model, and equipment. So, the appropriate choice is ...
a. vehicle color
__
However, vehicle color may play a role in ownership costs if more money is spent on washing a white car than would be spent on a black or beige car. Similarly, a light-colored car may require less use of an air-conditioner in the summer sun than does a dark-colored car, ultimately affecting fuel cost. It isn't always obvious what the features of a vehicle are that contribute to ownership cost.
What type of drum system is mostly to be found on the rear of a modern front wheel drive vehicle ?
Answers
Drum Brakes are mostly to be found on the rear of a modern front wheel drive vehicle.
What Is Drum Brake?
Drum brakes have been around since 1900 ,patented until 1902 by Louis Renault.
A drum brake is a brake that , causes friction caused by a set of shoes or pads that press outward against a rotating cylinder-shaped part called a brake drum.It rotates at the same speed as the wheel. The drum surrounds a set of brake shoes that are coated in materials that generate friction.Types of drum brakes
Leading/Trailing Shoe type. Twin-leading shoeDuo Servo.To know more about drum brakes from the given link
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You are designing a critical component to be installed in a chemical plant, where corrosion resistance and high temperature performance are critical. As a result, a fully dense material is required. Because of the materials used in the system, the part can only be produced by powder metallurgy. Which powder metallurgy process would you use to produce a fully dense component?a) Hot Isostatic Pressing b) Sinter then Metal Injection Molding c) Cold Isostatic Pressing d) Press and Sinter Processes e) Metal Injection Molding
Answers
Answer:
Yes
Explanation:
Because your installing something
The powder metallurgy process that would be used to produce a fully dense component is Hot Isostatic Pressing. The correct option is a.
What is Hot Isostatic Pressing?Hot isostatic pressing is a process used to consolidate metal powder or to remove defects in solids such as pores, voids, and internal cracks, densifying the material to 100% of its theoretical density.
Hot Isostatic Pressing (HIP) is a process used to densify powders, cast and sintered parts, and steels and superalloys in a furnace at high pressure and temperatures ranging from 900 to 1250°C.
To provide isotropic properties and 100% densification, the gas pressure acts uniformly in all directions.
Hot Isostatic Pressing is the powder metallurgy process that would be used to create a fully dense component.
Thus, the correct option is a.
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Grime can reduce headlight effectiveness by as much as: _________
Answers
Grime can reduce headlight effectiveness by as much as 50%.
What is Grime?
Grime is a term used to describe a layer of dirt, dust, and other contaminants that build up on surfaces over time. It can be a combination of various substances such as oil, grease, and dirt that settle on surfaces due to exposure to the environment.
Grime is often found on exterior surfaces of buildings and vehicles, and can accumulate on windows, sidewalks, and other surfaces that are exposed to the elements. It can also build up on interior surfaces, such as kitchen counters and bathroom fixtures. Cleaning grime can help to maintain the appearance and integrity of the affected surfaces, as well as improve hygiene and prevent the growth of bacteria and other pathogens.
Grime can reduce headlight effectiveness by as much as 50%. Dirt, dust, and grime can build up on the surface of the headlight lens over time, reducing the amount of light that can pass through.
The buildup can cause the light to scatter and diffuse, reducing its intensity and effectiveness. This can make it difficult for drivers to see the road ahead and can also reduce the visibility of the vehicle to other drivers, making it a safety hazard.
It's important to clean the headlight lenses regularly to maintain maximum visibility and safety.
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Show that the catting speed of a tool given S=nDN/1000r/min
Answers
I guess you got the one
hope it helps you better
High-temperature refrigeration applications will normally provide box temperatures of?
Answers
High-temperature refrigeration applications will normally provide box temperatures of 47 to 60°F.
In the question, asked to specify the range of temperature for High-temperature refrigeration applications for the box.
Refrigerants are the coolants used in refrigeration devices such as ac, refrigerators, etc. Some examples of refrigerant CFCs.
Here, the required range of temperature for High-temperature refrigeration applications varies from 47 to 60°F.
Thus, high-temperature refrigeration applications will normally provide box temperatures of 47 to 60°F.
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What is the function of the solenoid switch?
Answers
Answer:
A solenoid switch is an electrical switch that is often used where a high current circuit, such as a starter motor circuit, is brought into operation by a low current switch. When the key switch is turned to Start and the gearshift is in neutral, the circuit between the battery and the solenoid switch is complete
Explanation:
brainliest?
The function of the solenoid switch is better understood by the fact that it mediates the high current which is flowing in the circuit into an appropriate current that is easily required by any electrical device.
What is a Solenoid switch?A solenoid switch may be defined as a type of electrical switch that is significantly utilized in a place where there is a high current flowing in the circuit. This high current is effectively brought into a functional low current switch.
According to the context of this question, a solenoid switch is placed between your vehicle's ignition module and the engine in order to regulate the high current into the functional one. This type of switch is also used in a motor circuit for the same function.
Therefore, the function of the solenoid switch is well described above.
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what substance does light travel through before putting water in the cup
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A copper wire of diameter 1 cm and a resistance 0.15 ohms.Itv was drawn under pressure so that it's diameter was reduced to 50%. what is the new resistance of the wire?
Answers
The new resistance of the wire is 2.4.
How to calculate the resistanceIt should be noted that to solve for the new resistance of the wire after it has been drawn under pressure, we need to find the new cross-sectional area of the wire. We are told that the diameter of the wire has been reduced to 50% of its original value.
The cross-sectional area of a circle is proportional to the square of its diameter, so if the diameter is reduced by a factor of 2, the area is reduced by a factor of 4. Therefore, the new cross-sectional area of the wire is 1/4 of its original value.
It should be noted that R' = 16R
New resistance will be:
= 16 × 0.15
= 2.4
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A 2 Explain Dynamic characteristics of SCR
Answers
Answer:
Turn-on and turn-off characteristics of an SCR are called the dynamic characteristics of the SCR.
4.) At the top of hill, the reading of the barometer is 65cm Hg. Express (3 Marks) the same in 'kpa' and in 'psi'.
Answers
The pressure at the top of the hill is 569.94 kPa and 82.638 psi. A barometer is a measuring device used to measure atmospheric pressure.
A mercury barometer's standard atmospheric pressure reading is 760 mm of mercury (Hg). The reading of the barometer is 65 cm of Hg at the top of the hill. In order to express the reading of the barometer in kPa and psi, we can use the following conversion factors:1 atm = 101.325 kPa1 atm = 14.696 psi The pressure at the top of the hill is:65 cm of Hg = 65/100 m of Hg The density of mercury is 13.6 g/cm³, so the mass of mercury supported by a 1 cm² column is 13.6 g. As a result, a 65/100 m of Hg column has a mass of 13.6 * 65/1000 = 0.884 g/cm².So, at the top of the hill:Pressure in Pa = density of mercury * gravity * height of columnPressure in Pa = 0.884 * 9.8 * 65/100Pressure in Pa = 569.936 Pa = 569.94 kPa (rounded to 3 decimal places)To calculate the pressure in psi,Pressure in psi = 569.94 kPa / 6.8948 psiPressure in psi = 82.638 psi (rounded to 3 decimal places)Therefore, the pressure at the top of the hill is 569.94 kPa and 82.638 psi.
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4.)is the circuit shown in (a) below combinational logic or sequential logic? explain in a simple fashion what the relationship is between the inputs and outputs. what would you call this circuit? repeat for the circuit shown in (b).
Answers
(a) The combinational logic circuit depicted in (a) is a circuit. One output LED and two input switches make up the device. Only when both input switches are closed or turned on does the output LED turn on.
Combinational logic is a subset of digital logic that is used in electronics and computer science to create circuits where the output is fully reliant on the input variables. The logical combinations of the input variables are the outputs in combinational logic. Gates like AND, OR, and NOT carry out the logical processes. Combinational logic's key benefit is that it is straightforward to build and simple to comprehend. Digital electronics frequently employs combinational circuits for tasks including data processing, signal processing, and mathematical computations. Adders, multiplexers, and demultiplexers are a few typical examples of combinational logic circuits.
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1. Safety goggles, glasses, or face shields must be
worn in the shop to:
a. Help you see better.
b. Prevent eye injury.
c. Prevent sweat from running into your eyes.
d. Keep fumes from entering the eyes.
e. All of the above.
f. None of the above.
Answers
D
Some gases r poisonous, so take a golf cart for example. The battery in it is (I think) poisonous or toxic.
1. Illustrate the following parts of a hatchback car body i. Rear wing ii. BC-post iii. Bonnet iv. D-post Bonnet V. 10m
Answers
Some of the Illustration of the parts of a hatchback car body is given in the image attached.
What is the car body about?Rear wing: The rear wing is an aerodynamic device typically located on the rear deck of a car, near the back of the roof. It helps to reduce drag and improve stability and handling by providing downforce at high speeds.
ii. B-post: The B-post is the structural member located between the front and rear doors of a car body. It provides support and strength to the car body and is usually part of the side structure of the vehicle.
iii. Bonnet: The bonnet, also known as the hood, is the part of a car body that covers the engine and other mechanical components. It is typically hanged at the front of the car and can be lifted to provide access to the engine.
iv. D-post: The D-post is the vertical structural member that runs between the roof and floor of a car body. It provides support and strength to the car body, particularly in the event of a rollover.
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what is Geography? pliz help
Answers
Answer:
hope it's helpful please like and Follow me
Answer:
Geography is the science that studies and describes the surface of the Earth in its physical, current and natural aspect, or as a place inhabited by humanity.
What major financial flop led to the end of the Sega Dreamcast and ultimately caused Sega to stop making game consoles altogether?
1: The founder and CEO of Sega was found to be secretly skimming money off of the top of profits, leading to widespread distrust by the public and a sharp decline in sales until they ultimately had to shut down due to making no profit.
2: A small group of employees found a way to drain all of the Sega Corporation funding accounts and flee the country with all of the money, never to be heard from again.
3: A game called Shenmue, that cost more than $70 million to make, meant that everyone who owned a Dreamcast needed to buy two copies of the game just for Sega to make back the money they had spent to develop it-which didn't happen.
4: A game called Katamari Damacy that carried a virus that would infect any console that it was played on forced Sega to spend millions of dollars in refunds and bankrupted the company.
Answers
Answer:
The major financial flop that led to the end of the Sega Dreamcast and ultimately caused Sega to stop making game consoles altogether is:
3: A game called Shenmue, that cost more than $70 million to make, meant that everyone who owned a Dreamcast needed to buy two copies of the game just for Sega to make back the money they had spent to develop it-which didn't happen.
Explanation:
Shenmue, released on December 29, 1999, was created for Dreamcast by Suzuki. It was widely described as the most expensive video game ever produced. It had an estimated production and marketing cost of between US$47 and $70 million, according to the latest available data.
real life problems solved in statistics using software engineering
Answers
Answer:
Explanation:
Using a machine learning algorithm, Aerosolve’s predictive model takes the optimal price for a rental based on its location
Does anyone know the answer to this
Answers
Answer:
A
Explanation:
Answer:
A
Explanation:
The fuse breaks the circuit if a fault in an appliance causes too much current to flow. The fuse contains a piece of wire that melts easily. If the current going through the fuse is too great,the wire heats up until it melts and breaks the circuit
The stability of a system is influenced by all of the __________ in the system, especially those in the feedback loop.
Answers
The stability of a technological system is influenced by all of the components in the system, primarily those in the feedback loop.
A technological system is a system that enables the working of devices, structures, materials, energy, and information together to extend human capabilities and solve problems. In order to keep a technological system efficient, all components of the systems play an important part on their own. But out of all, the most prevalent component that influences the usage and success of a technological system to a great extent is its feedback loop. The feedback loop allows the systems to make necessary changes while the system is operational. The purpose of the feedback loop is to get feedback about the software to be developed.
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