An air conditioner operates exactly as a refrigerator; it removes heat from a cold place (a bedroom, for example) and conveys it to a warmer place (usually the outside). Quantities of practical importance in understanding the efficiency of air conditioners are the rate of heat removal and the electric power input to the unit (i.e., the electric energy consumed per unit time). Find an expression for the coefficient of performance KKK of an air conditioner that has a rate of heat removal HHH and a power consumption PPP .

Answer:

According to the National Electric Code Paragraph 404 section 2, the cables entering into the 2-gang wall must be 4 in number and it must be fitted with a neutral conductor terminal as well.

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Answer:

375 KPa

Explanation:

From the question given above, the following data were obtained:

Initial pressure (P₁) = 125 KPa

Initial temperature (T₁) = 300 K

Final temperature (T₂) = 900 K

Final pressure (P₂) =?

The new (i.e final) pressure of the gas can be obtained as follow:

P₁/T₁ = P₂/T₂

125 / 300 = P₂ / 900

Cross multiply

300 × P₂ = 125 × 900

300 × P₂ = 112500

Divide both side by 300

P₂ = 112500 / 300

P₂ = 375 KPa

Thus, the new pressure of the gas is 375 KPa

The dollar value of a firm's return in excess of its opportunity costs is called its:

c. economic value added.

Economic value added is a profitability measure that takes into account both the dollar value of a firm's return and its opportunity costs, and calculates the excess return that the firm generates above and beyond what it would earn by investing in alternative opportunities.

EVA is calculated by deducting the company's total capital costs from its net operating profit after taxes (NOPAT). The formula for calculating EVA is as follows:

EVA = NOPAT - (Capital * Cost of Capital), where

NOPAT represents the company's net operating profit after taxes, which is the profit generated by its core operations.

Capital refers to the total amount of capital invested in the company, including both equity and debt.

Cost of Capital is the weighted average cost of the company's capital, which takes into account the cost of equity and the cost of debt.

By subtracting the capital costs from the company's profits, EVA measures the surplus return generated above the required return on invested capital. A positive EVA indicates that the company is creating value for its shareholders, while a negative EVA suggests that the company is not generating returns that exceed the cost of capital.

EVA is considered a valuable metric because it aligns with the goal of maximizing shareholder wealth. It provides insights into how efficiently a company utilizes its capital and helps assess whether management decisions are generating value. By focusing on EVA, companies aim to improve their financial performance and increase shareholder value over time.

The dollar value of a firm's return in excess of its opportunity costs is called its: c. economic value added.

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Answer:

I think its A

Explanation:

Answer:

  30√2 ≈ 42.426 volts

Explanation:

The RMS value of the signal is the DC equivalent. For a sine wave, the mean of the square is half the square of the peak value. Then the Root-Mean-Square is ...

  RMS = √((Vp)^2/2) = Vp/√2

For Vp = 60 volts, the equivalent DC voltage is ...

  V = (60 volts)/√2 = 30√2 volts ≈ 42.426 volts

Answer:

Static Model

Explanation:

An **inset** cabinet door is rabbeted along all edges so that part of the door is inside the door frame.

An inset cabinet door is designed to fit flush with the face frame of the cabinet, creating a clean and seamless appearance. The door is carefully constructed to have precise dimensions that allow it to sit within the cabinet frame, resulting in a smooth and cohesive look. The rabbeted edges of the door provide the necessary clearance for it to fit snugly within the frame while still allowing it to open and close smoothly. This style of cabinet door is often chosen for its traditional and timeless aesthetic.

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Answer:

You didn't have a question

Explanation:

Answer: The Hazard Communication Standard (HCS), 29 CFR 1910.1200 (h), requires all employers to provide information and training to their employees about the hazardous chemicals to which they may be exposed at the time of their initial assignment and whenever a new hazard is introduced into their work area.

Explanation: choose me as Brainliest

The required, if our new responsibilities involve working with hazardous chemicals, your employer should provide training on any chemical hazards before you begin working in that area

Chemical hazards are any physical, chemical, or toxicological properties of a chemical that may cause harm to humans or the environment.

Here,
According to the Occupational Safety and Health Administration (OSHA) regulations, employers are required to provide hazard communication training to employees who may be exposed to hazardous chemicals as part of their job duties. The training must be provided at the time of initial assignment to a job involving exposure to hazardous chemicals, and whenever a new physical or health hazard is introduced to the workplace.

Therefore, if our new responsibilities involve working with hazardous chemicals, your employer should provide training on any chemical hazards before you begin working in that area. If any new hazardous chemicals are introduced into the workplace after your initial training, your employer should provide additional training on those specific hazards.

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Answer:

The final velocity of the rocket is 450 m/s.

Explanation:

Given;

initial velocity of the rocket, u = 0

constant upward acceleration of the rocket, a = 18 m/s²

time of motion of the rocket, t = 25 s

The final velocity of the rocket is calculated with the following kinematic equation;

v = u + at

where;

v is the final velocity of the rocket after 25 s

Substitute the given values in the equation above;

v = 0 + 18 x 25

v = 450 m/s

Therefore, the final velocity of the rocket is 450 m/s.

An extremum is a point where the function has its highest or lowest value, and at which the slope is zero.

The dimensions to be used if the volume is fixed and the cost of construction is to be kept to a minimum is as follows;

Reason:

The given parameters are;

Form of silo = Cylinder surmounted by a hemisphere

Cost of construction of hemisphere per square unit = 2 × The cost of of construction of the cylindrical side wall

Required:

The dimensions to be used if the volume is fixed and the cost of construction is to be kept to a minimum

Solution:

The fixed volume of the silo, V, can be expressed as follows;

\(V = \pi \cdot r^2 \cdot h + \dfrac{2}{3} \cdot \pi \cdot r^3\)

Where;

h = The height of the cylinder

r = The radius of the cylinder

The surface area is, Surface Area = 2·π·r·h + 2·π·r²

The cost, C = 2·π·r·h + 2×2·π·r² = 2·π·r·h + 4·π·r²

Therefore;

\(C = 2 \times \pi \times r\times \dfrac{V - \dfrac{2}{3} \cdot \pi \cdot r^3 }{\pi \cdot r^2 } + 4 \cdot \pi \cdot r^2 = \dfrac{8 \cdot r^3 \cdot \pi + 6 \cdot V}{3 \cdot r}\)

At the minimum value, we have;

Which gives;

16·π·r³ = 6·V

Which gives;

\(h = \dfrac{\dfrac{8 \cdot \pi \cdot r^3}{3} - \dfrac{2}{3} \cdot \pi \cdot r^3 }{\pi \cdot r^2 } = 2 \cdot r\)

h = 2·r

The height of the silo, h = 2 × The radius, 2

Therefore, the dimensions to be used if the volume is fixed and the cost is to be kept to a minimum is, height, h = 2 times the radius

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This statement is true. Heat engines operate in a cyclic manner and receive heat from a high-temperature source, convert some of that heat into useful work, and then reject the remaining heat to a low-temperature sink.

This process is governed by the laws of thermodynamics and is the basis for many practical devices such as steam turbines, internal combustion engines, and refrigerators.Heat engines are cyclic devices that receive heat from a source, convert some of it to work, and reject the rest to a sink.

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Explanation:

1. Weld only in authorized areas. Make sure the area is dry, chemical free, and well ventilated.

2. Inspect the equipment before starting to use it.

3. Keep other people away, unless they are authorized to be there and are wearing the appropriate personal protective equipment.

Answer:

Sole Proprietorship, General Partnership , Limited Partnership, corporation

Explanation:

Business in something that an individual or a group of people do for a living and produce products and services that benefits the society and the people. There are several entities that can be common in business. Some common form of entities are :

Sole Proprietorship : One to one

-- here there is only one owner in the business and he maintains and manages the entire business functions under his control.

Limited Partnership : many to one

-- here two or more than two partners establish business and runs it but only one or more is liable to the amount of the investments.

General Partnership : many to many

-- It is a business partnership where all the partners shares the profits, the assets, legal liabilities and financial liabilities, etc.

Corporation : many to one

It is a business entity where a group of individual or a group of companies run a single business which is generally authorized by the state.

Some of the typical types of the entities that one may think to be common in term of the business entities are about the relationships that are held within many to many and one to many.

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Answer:

B) 430 Pci/L

C) F = 1.05 * 10 ^13 L/s

Explanation:

Given data :

enclosed area dimensions : 5 * 4 * 3 m^3

emission of  Radon-22 through walls = 0.1 atoms/(cm^2.s)

first we will have to determine the total surface area of the enclosed area

= 2 lb + 2 bh + 2 lh

= 2( 5*4 ) + 2( 4*3 ) + 2 ( 5*3 ) = 9.4 * 10^5 cm^2

next we determine the production rate ( P )

p = 0.1 atoms/(cm^2.s) * 9.4 * 10^5 cm^2 =  9.4 * 10^5 atoms/s

determine production rate per volume

production rate / space volume =  9.4 * 10^5 / ( 5*4*3 )

                                                     =  9.4 * 10^5 / (60 * 10^3) L

                                                     = 16 atoms/ L

attached below is the remaining part of the solution

A system will never enter a deadlocked state if the system uses the detection and recovery technique. Thus the correct option is B.

A deadlock in desktop software happens when a procedure or task enters a waiting state as a result of another waiting process holding the requested system resource.

When a group of processes is in a wait state, a deadlock occurs because each process is awaiting a resource that is being held by another waiting process.

The wait-for graph must be maintained by the system in order to detect deadlocks, and the system periodically runs an operation that looks for cycles in the wait-for graph.

There is no method used by the OS to avoid or stop deadlocks. The OS checks the system on a regular basis for any deadlocks in an effort to break them. Therefore, option B is appropriate.

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In an open-loop transfer function, the gain (G) and the plant (H) are multiplied together. Since the system type is 2, it means that the transfer function has two poles at the origin (integrators) in the open-loop transfer function. The order of the system is 6, indicating that the transfer function has six poles in total.

Using the shortcuts for determining the behavior of the transfer function at low and high frequencies, we can find the following:

|GH|dB at low frequencies: In a minimum phase system, the magnitude of the transfer function approaches unity (0 dB) as the frequency approaches zero (low frequencies).

|GH|dB at high frequencies ([infinity]): In a minimum phase system, the magnitude of the transfer function approaches zero (negative infinity dB) as the frequency approaches infinity (high frequencies).

/GH at low frequencies: In a minimum phase system, the phase shift of the transfer function is zero degrees at low frequencies.

/GH at high frequencies ([infinity]): In a minimum phase system, the phase shift of the transfer function is -180 degrees at high frequencies.

Please note that the specific values of |GH|dB at low and high frequencies and /GH at low and high frequencies would require the transfer function's actual coefficients or frequency response to calculate accurately.

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Answer:

Executive Summary

Explanation:

It is Executive Summary because I used process of elimination. Constraints are set backs. Project objectives are the goals that you want to achieve. Project development cycle are basically the steps that will be used.

When thrust faults occur, the region undergoing stress is subject to compression stress.

Compressive stress is a force that causes a substance to deform in order to take up less space.

When thrust faults occur, the region undergoing stress is subject to compression stress. A substance is said to be under compression when it is subjected to compressive stress.

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During nighttime hours, the most effective method of scanning for other aircraft for collision avoidance is to use external lights and scanning techniques.The method that pilots use to scan for other aircraft during nighttime hours is different from the daytime technique.

Nighttime vision is less effective than daytime vision, and since the eyes cannot see all lights, the use of lighting systems and scanning techniques is critical. Pilots may use external lights and scanning techniques to avoid collisions with other aircraft when flying at night.External lights are commonly used by pilots to indicate their position and direction of travel to other aircraft. In addition, external lights are used to increase visibility and avoid collisions with other aircraft.

Scanning techniques, on the other hand, are used to scan the airspace for potential collisions with other aircraft during nighttime operations.Aircraft lights are of two types; navigation lights and anti-collision lights. Navigation lights, which include red, green, and white lights, are required on all aircraft and are visible from up to 3 miles away. They assist in identifying aircraft and their direction of travel.Anti-collision lights are red and white flashing lights on an aircraft that indicate the location of the airplane. These lights help to distinguish between airplanes and other objects in the sky. They are especially effective at night when it is more difficult to see. During night flights, a pilot should use both types of lights to make themselves visible and avoid collision.

Therefore, external lights and scanning techniques are the most effective methods of scanning for other aircraft for collision avoidance during nighttime hours.

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Critical reflection enhances the evaluation and improvement of heuristics and engineered/design solutions by identifying their effectiveness, biases, and areas for enhancement.

Critical reflection relates to heuristics and engineered/design solutions by providing a means to evaluate and improve upon them. Through critical reflection, one can assess the effectiveness and limitations of heuristics, which are mental shortcuts used for problem-solving, and engineered/design solutions, which are deliberate and planned problem-solving approaches.

It allows for a deeper understanding of their impact, potential biases, and areas for improvement, ultimately guiding the refinement and development of more effective problem-solving strategies.

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The first step that is needed in order to shift the reverse would be to Push down on the shift lever.

This is the term that is used in driving to explain the scenario that occurs due to the fact that a person has to go through a system of changing gears while they are driving. An example of how this is used is when a person says that there car has a manual transmission instead of automatic transmission.

This would mean that this person would be the one that would be changing the gears while driving on their own. To do this what would be done is to Push down on the shift lever.

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On the print you would expect the pitch diameter of the gear to be 9.00 inches. Option A is right.

Gear ratio = 1/3

This is solved as number of teeth on pinion / teeth on gear

= Np/Ng

The pitch diameter = 1.5 x 2

= 3

Diametral pitch = 12

NP = 3 x 12 = 36

This is the teeth on piston

Ng = 3NP

Ng = 3 * 36

= 108

Hence pitch diameter = 108/12 = 9

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Professional software encompasses more than just programs developed for a specific customer. It refers to software that is designed and developed to meet high standards of quality, reliability, and efficiency.

This includes robust functionality, user-friendliness, and seamless integration with other systems. In addition, professional software often comes with thorough documentation, ongoing support, and regular updates to ensure optimal performance.

Developers of professional software invest time and resources in understanding the needs of their target audience, following industry best practices, and adhering to relevant regulations and standards.

As a result, such software caters to a wider range of users and industries, rather than being limited to custom solutions for individual customers. This broad applicability allows professional software to facilitate diverse tasks and processes, ultimately contributing to enhanced productivity and business growth.

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The pump work = v3.dP = 57.18 x 0.001 x ( 4000 - 20) =227.57 KW

here At T1 = 700 C and P1 = 4 Mpa, from steam tabel : h1 =3906.41 KJ/Kg and s1 = 7.62 KJ/Kg.K

now s1 = s2 = 7.62 KJ/Kg.K as 1-2 is isentropic

so at P2 = 20 Kpa and s2 = 7.62 KJ/Kg.K , fom steam table : h2 = 2513.33 KJ/Kg

a) power produced by turbine = m.( h1 - h2) = 57.18 x ( 3906.41 - 2513.33) = 79656.15 KW

b) at P3 = 20 Kpa, 3 = vf = 0.001 m^3/kg

so pump work = v3.dP = 57.18 x 0.001 x ( 4000 - 20) =227.57 KW

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