An ideal-gas mixture whose apparent molar mass is 40 kg/kmol consists of nitrogen N2, and two other gases. If the mole fraction of the nitrogen is 0.2, determine its mass fraction. 0.36 0.55 0.14 0.20

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

Discovering the location of the spinning bar OAB's center of mass will be the first step. The distance between the center of mass and the fixed point O is L/3.

The difference between the internal and external virtual work is the product of the virtual internal force (pv) and the real internal deformation (r). The external virtual work is equal to the virtual external force (Pv) multiplied by the real external displacement (r).

U = mgh = mgL/2(1 - cos(e)) = mgL/2(L/2 - L/2cos(e)

T = (1/2)

I w = (1/8) m L2 (de/dt) = (1/2) m L2 (12) (de/dt)

The equation of motion can be written as follows by applying the virtual work principle: d/dt (dL/de) - (dU/de) = F F = k z (t)

dL/de = -L sin is what we obtain when we differentiate L with respect to e. (e)

dU/de = mgL/2 sin is what we obtain when we differentiate U with respect to e. (e)

If we ignore higher-order terms in e and substitute these formulations into the equation of motion, we arrive at:

mgL/2 + (mL2/12) d2e/dt2 = k z (t)

The linearized motion equation for tiny angular displacement is given here (t).

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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)

Lateral runout is felt in the steering wheel even at slower speeds. It leads to riding vibration and therefore poor ride quality.

Lateral runout refers to the side-to-side movement of the car's rotor as it rotates, which is caused by the off-center deviation of the rotor.

Lateral runout leads to riding vibration and therefore it is associated with poor ride quality.

Lateral runout can be properly quantified by using a dial indicator, which is a precision device used to measure linear displacements.

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Based on the given statement, the claim made by the author is that the type of sensors shown for a brushless DC motor are Hall effect sensors, proximity sensors, and photoelectric sensors.

The author of the statement is making a claim about the specific type of sensors that are used for a brushless DC motor. According to the author, the sensors used are Hall effect sensors, proximity sensors, and photoelectric sensors.

Hall effect sensors are used to measure the magnetic field of the motor and determine its position and speed. Proximity sensors are used to detect the presence of an object without physical contact and are often used to determine the position of the rotor. Photoelectric sensors use light to detect the position of the rotor and determine its speed.

Therefore, the author's claim is that these three types of sensors are commonly used in brushless DC motors for various purposes, such as position and speed sensing.

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When designing a new material for use in an airplane body, the material should have the following properties:

High strength-to-weight ratio: The material should have high strength-to-weight ratio because the weight of the airplane body should be reduced so that it can fly easily. High stiffness: The material should have high stiffness because it should resist the forces acting on it. Low density: The material should have low density because the weight of the airplane body should be reduced so that it can fly easily. Corrosion-resistant: The material should be corrosion-resistant because it should resist corrosion by exposure to the atmosphere. High fatigue strength: The material should have high fatigue strength because it should resist the forces acting on it.

Fatigue strength is the maximum stress that can be applied to a material without causing it to break. The above properties are crucial when designing a new material for use in an airplane body.

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The acceleration lane on freeways is used for increasing the speed of a vehicle to safely merge onto the main highway or freeway.

On motorways, the acceleration lane is used to accelerate a vehicle to match the speed of traffic in the main lanes before blending into the flow of traffic. The acceleration lane gives drivers room to safely raise their speed to catch up to traffic already on the motorway when they enter a motorway. By doing so, accidents are prevented and traffic is kept moving smoothly. To protect their own safety and the safety of other road users, drivers must use the acceleration lane sensibly and blend smoothly into the traffic flow.  It is important to follow the traffic rules and guidelines when merging onto a highway or freeway to ensure safe driving practices.

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Answer:

Impermeable

Explanation:

Something that is impermeable does not allow water or liquid to pass through it.

Answer:

D. Im pretty sure at least. you're welcome

a) (i) The kinetic energy rate in ft.lbf/s is 0.00771
(ii) kinetic energy being transported by the methanol in the pipe is 1.40 x 10⁻⁵ hp

b) Additional energy is dissipated into other forms. The larger part is heat energy, but also dissipated in light, sound and vibrations.

The ability of an object to do work by virtue of its motion.

The mass flow rate expressed as

m= 3.00 gal.mm x 1000/264.17L/gal x 0.792 kg/L x 2.20462 / 60= 0.330 lb/s

The velocity is determined by the continuity equation

u= Q/A =[ 3.00 x 35.3145/(264.17x60) ] / π (1/12)²/4

u = 1.225 ft/s

The rate of kinetic energy transport is

K.E = 1/2 x (0.330) x (1.225)² = 0.00771 ft-lb/s

Thus, the kinetic energy rate in ft.lbf/s is 0.00771

The rate of kinetic energy in hp is

K.E = 0.00771 x 1.341 x 10⁻³ /0.7376

K.E = 1.40 x 10⁻⁵ hp

The kinetic energy being transported by the methanol in the pipe is 1.40 x 10⁻⁵ hp

b) The major amount of heat energy is dissipated. The other forms of energy is light, sound and vibrations.

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Another term to describe a systematic approach for developing training programs is Instructional Systems Design (ISD).

ISD is a process that involves analyzing training needs, designing instructional materials, developing and delivering the training, and evaluating its effectiveness. This approach ensures that training programs are effective, efficient, and meet the learning objectives of the participants.

ISD typically follows a step-by-step process, including conducting a needs assessment, setting specific objectives, designing the curriculum and instructional materials, implementing the training, and evaluating its outcomes.

By using ISD, organizations can develop high-quality and learner-centered training programs that align with the needs and goals of both the learners and the organization.

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Answer:

Unlike a low voltage battery such as 12V, high voltage from a High Voltage battery should not be grounded to the chassis for several numbers of reason which are;

- HV up to 350V have a corresponding high current which generate unwanted magnetic field and causes magnetic interference. This can be reduced by using a twisted conductor so that the interference can be cancelled.

-HV can result to surges which result to spark over and flash over between phase and ground.

DNA analysis plays a crucial role in forensic science because it provides irrefutable evidence to identify suspects, victims, and even remains. It is a highly reliable method that allows investigators to match DNA samples found at a crime scene to a suspect or exclude innocent individuals from the investigation.

This helps to solve cases faster and more accurately, ensuring that justice is served. DNA analysis is also helpful in exonerating the wrongly accused, which is critical to upholding the integrity of the criminal justice system. Overall, DNA analysis is an essential tool in forensic science that helps to ensure that the right person is held accountable for their actions and the innocent are protected from false accusations.

The importance of DNA analysis to the field of forensic science lies in its ability to provide accurate and reliable evidence for criminal investigations. DNA analysis allows forensic scientists to. Identify suspects: By comparing DNA samples found at a crime scene with those of potential suspects, investigators can establish a match, proving a suspect's presence at the crime scene or involvement in the crime. Exonerate the innocent: DNA analysis can also clear innocent individuals by demonstrating that their DNA does not match the evidence found at the crime scene, preventing wrongful convictions. Solve cold cases: DNA analysis can be used to re-examine unsolved cases, even after many years, providing new leads and potentially identifying the perpetrator.
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Answer: Photo lines

Explanation: made more sense

The clause "Provide service in their areas of competence, being honest and forthright about any limitations of their experience and education" can guide a software engineer to make a better choice when deciding which projects to take on and how to communicate their skills and limitations to their clients and employers.

This clause emphasizes the importance of a software engineer's competence and transparency in their professional interactions. By providing service in their areas of expertise, software engineers ensure that they can deliver high-quality work that meets the client's expectations. This helps to build trust and maintain a positive relationship with the client and employer.

Furthermore, being honest and forthright about any limitations in experience and education is crucial for managing expectations and avoiding potential pitfalls. When a software engineer acknowledges their limitations, they can seek appropriate support or resources to overcome them or recommend alternative solutions if necessary.

This approach not only protects the client and employer's interests but also upholds the public interest by promoting ethical and responsible software development practices.

For instance, if a software engineer is offered a project that requires expertise in a programming language they are not familiar with, they can decline the project or express their limitations upfront. This allows the client and employer to make informed decisions and potentially find a more suitable resource for the task.

By following this clause, the software engineer ensures that the client and employer's best interests are upheld while maintaining professional integrity.

In conclusion, the clause encourages software engineers to provide services within their competence and be transparent about their limitations. By adhering to this principle, software engineers can make better choices in project selection and communication, leading to improved outcomes for clients, employers, and the public interest.

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If the aircraft's transponder fails during flight within Class B airspace, the pilot should immediately notify air traffic control (ATC) using the appropriate radio frequency, follow any instructions given by ATC, and adhere to established procedures for aircraft without a functioning transponder.

In the event of a transponder failure while in Class B airspace, it is crucial for the pilot to take immediate action. The first step is to promptly notify air traffic control (ATC) of the situation using the designated radio frequency. This communication ensures that ATC is aware of the transponder failure and can provide necessary guidance and instructions. The pilot should then comply with any directives given by ATC, which may include specific altitude or heading instructions.

Additionally, the pilot must adhere to established procedures for aircraft operating without a functioning transponder within Class B airspace. These procedures typically involve maintaining vigilance, flying predictable patterns, and using visual signals as necessary to communicate with other aircraft.

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Answer:

Explanation:

It is a device which consists of four layers and two terminals. The construction is almost the same as that of the transistor. But there are certain points which deviate from the construction from the transistor. The differentiating points are-

There is no base terminal in the DIAC

The three regions have almost the same level of doping

It gives symmetrical switching characteristics for either polarity of voltages

DIAC Diode

The frequency  is 6.67 kHz and the duty cycle is:16.67%.

​Given:

Pulse width=25

Period=150

Frequency:

Frequency=1/(150×10^-6)

Frequency=1/0.00015

Frequency=6.666 kHz

Frequency=6.67 kHz (Approximately)

Duty cycle:

Duty cycle=(25×10^-6)/ (150×10^-6)×100%

Duty cycle=16.67%

Therefore the frequency  is 6.67 kHz and the duty cycle is:16.67%.

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Answer: The 8-core machine saves  87.5% of the dynamic power.

Explanation:

Let Fold = f , Vold = V , Cold = Capacitance

so

Old Dynamic power = Cold × (Vold × Vold) × f

therefore for the 8-core machine

 Fnew / Fold = 1/4

Fnew = Fold/4

we were told that Voltage decreases proportional to frequency,

so

Vnew / Vold = 1/4

Vnew = V / 4

So New Capacitance will be;

Cnew = Cold

Thus, New Dynamic power = 8 × Cnew × ( Vnew × Vnew ) ×  Fnew

= 8 × Cold × (Vold × Vold/16) × ( f/4 )

=  8 × ( Cold ) × ( Vold × Vold ) × ( f ) / 64

= (Old Dynamic Power) / 8

therefore

Old Dynamic Power / New Dynamic Power = 8

Thus, Percentage of power saved will be;

Percentage power saved = 100 × ( Old Dynamic Power - New Dynamic Power ) / Old Dynamic Power

=   100 × (8-1) / 8

= 87.5 %

Therefore The 8-core machine saves  87.5% of the dynamic power.

Answer:

a) the repeat unit molecular weight of PTFE MW = 100.015 g/mole

b) the number-average molecular weight for a PTFE for which the degree of polymerization is 10,000 щₙ = 1000150 g/mole

Explanation:

Given that;

PTFE which is also called Polytetrafluoroethylene

structure  of repeat unit of Polytetrafluoroethylene

(C2F4)n

a)

To compute the repeat unit molecular weight

we say

MW = 2( atomic weight of C ) + 4( atomic weight of F)

MW = 2 (12.0107) + 4 ( 18.9984)

MW = 100.015 g/mole

therefore the repeat unit molecular weight of PTFE MW = 100.015 g/mole

b)

To compute the number-average molecular weight for  PTFE of which the degree of polymerization is 10,000

we say

DP = щₙ / MW

where щₙ is the number of average molecular weight,

MW is the repeat unit molecular weight give as 100.015 g/mole

DP is degree of polymerization which is 10,000

Now we substitute

10,000 = щₙ / 100.015

щₙ = 10,000 × 100.015

щₙ = 1000150 g/mole

Therefore the number-average molecular weight for a PTFE for which the degree of polymerization is 10,000 щₙ = 1000150 g/mole

Answer:

Explanation:

Given that:

\([\sigma] = \left[\begin{array}{cc}800&300\\ \\300&-400\end{array}\right] (MPa)\)

\([\sigma] = \left[\begin{array}{cc}\sigma_{xx}&\sigma_{xy}\\ \\\sigma_{yx}&\sigma_{yy}\end{array}\right]\)

Using Determinant method

The principal stress is the maximum or minimum normal stress acting on any plane. For the 2D stress system, the 2-principle plane always carries zero shear stress.

For principal stress \(( \sigma_1, \sigma_2)\)

\(\sigma_{1,2} = \dfrac{\sigma_x+ \sigma_y}{2} \pm \sqrt{( \dfrac{\sigma_x - \sigma_y}{2} )^2 + \sigma^2_{xy}}\)

\(\sigma_{1} = \dfrac{800+(-400)}{2} \pm \sqrt{( \dfrac{800 -(-400)}{2} )^2 + (300)^2}\)

\(\sigma_{1} = \dfrac{400}{2} \pm \sqrt{ (600)^2 + (300)^2}\)

\(\sigma_{1} = 200+ 670.82 \\ \\ \sigma_{1} = 870.82 \ MPa\)

\(\sigma_{2} = \dfrac{800+(-400)}{2} \pm \sqrt{( \dfrac{800 -(-400)}{2} )^2 + (300)^2}\)

\(\sigma_{2} = 200- 670.82 \\ \\ \sigma_{1} = - 470.82 \ MPa\)

According to Mohr's circle;

Mohr's circle is the locus provided that the position of the normal stress and the shear stress is acting on any plane.

Center = (a,0)

\(a = \dfrac{\sigma_{x}+\sigma_{y}}{2}\)

\(a = \dfrac{800+(-400)}{2}\)

a = 200 MPa

radius (r) = \(\sqrt{ (\dfrac{\sigma_{x}-\sigma_{y}}{2})^2 + \sigma^2 _{xy}}\)

\(=\sqrt{ (\dfrac{800-(-400)}{2})^2 + (300)^2}\)

\(=\sqrt{ (600)^2 + (300)^2}\)

r = 670.82 MPa

\(\sigma_1 = a +r \\ \\ \sigma_1 = 200 + 670.82 \\ \\ \sigma_1 = 870.82 \ MPa\)

\(\sigma_2 =-(r-a)\)      (it is negative because of the negative x-axis)

\(\sigma_2 =670.82 - 200 \\ \\ \sigma_1 = 470.82 \ MPa\)    

\(\tau_{max} = radius \ of \ Mohr's \ circle\)

\(\tau_{max} = 670.82 \ MPa\)

As part of the monitoring and controlling process in project management, one of the activities accomplished is assessing project quality.

This involves evaluating and measuring the project's deliverables and performance against predefined quality standards and criteria. It ensures that the project outputs meet the desired level of quality and helps identify any deviations or issues that may arise during project execution. This activity helps project managers take corrective actions and make necessary adjustments to maintain or improve project quality.

While completing project documentation, completing the lessons learned review, and creating the network diagram are important tasks in project management, they may be associated with other processes such as project closing, project review, or project planning, respectively, rather than being specifically part of the monitoring and controlling process.

Therefore, one of the activities accomplished is assessing project quality.

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Answer:

Blue

Explanation:

You want me to overthink it which is why I think the answer should be the most obvious and not the most complicated

Answer and Explanation:

Your favorite primary color is blue because 1. blue is a primary color, 2. There is a lot of blue in the picture, and 3. You outlined the circle in blue.

Ty for the points lol.

#teamtrees #WAP (Water And Plant)

The three ways that research can facilitate the work of building technicians is that:

Building technicians are known to be people who help with some tasks around construction projects and building works.

Note that building technician overseeing a scope of tasks such as monitoring build progress and as such The three ways that research can facilitate the work of building technicians is that:

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The average cost per share is $0.0031 per share

To calculate the average cost, divide the total purchase amount by the number of shares purchased to figure the average cost per share.

The average cost share method is commonly used by investors for mutual fund tax reporting.

Therefore average cost per share = Total cost/ total share owned.For example, an investor that has $1000in an investment and owns 500 shares would have an average cost basis of $2 i.e ($10,00 / 500).

Similarly,The total cost =$ 2.80+ $1.90 = $4.70

The total share owned = 500+ 1000 = 1500

average cost = 4.70/1500 = $0.0031 per share.

Therefore the average cost per share is $0.0031 per share.

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Value engineering is a systematic approach that aims to improve the value of a product, project, or process by analyzing its functions and identifying opportunities for cost reduction while maintaining or improving its performance and quality. It involves a collaborative effort of cross-functional teams, including engineers, designers, managers, and other stakeholders.

The role of value engineering in target costing is to help achieve the desired cost target for a product or project. Target costing is a cost management approach that sets the desired cost based on market conditions and customer requirements. Value engineering supports target costing by finding ways to optimize the value delivered to customers while controlling costs.

Here's how value engineering contributes to target costing:

Function analysis: Value engineering starts with a thorough analysis of the product's functions and their importance to customers. By understanding the value provided by each function, teams can prioritize them based on customer needs and focus efforts on cost reduction for non-critical functions.

Cost analysis: Value engineering involves a detailed analysis of the costs associated with various components, materials, and processes involved in the product or project. It helps identify areas where costs can be reduced without compromising the essential functions or quality.

Creativity and innovation: Value engineering encourages creativity and innovative thinking to find alternative designs, materials, or processes that can deliver the required functions at a lower cost. It involves brainstorming sessions and idea generation to explore different possibilities.

Trade-off analysis: Value engineering facilitates trade-off analysis between cost, performance, and quality. It helps identify trade-offs that can be made to reduce costs while still meeting customer expectations. By understanding the impact of different design or process changes on cost and performance, informed decisions can be made.

Collaboration and continuous improvement: Value engineering promotes collaboration among cross-functional teams to identify cost-saving opportunities. It encourages open communication and the sharing of ideas to drive continuous improvement in cost management. It also fosters a culture of innovation and cost-consciousness throughout the organization.

Overall, value engineering plays a vital role in target costing by helping teams identify cost reduction opportunities, optimize the value delivered to customers, and achieve the desired cost targets without compromising quality or customer satisfaction. It ensures that the product or project remains competitive in the market while meeting cost objectives.

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Answer:

Q = [ mCp ( ΔT) ] \(_{cooling water }\)

(ΔT)\(_{cooling water}\) and  Q  is given

\(m_{cooling water}\)  = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)

next the rate of condensation of the steam

Q = [ m\(h_{fg}\) ]\(_{steam}\)

  \(m_{steam} = \frac{Q}{h_{fg} }\)

Total resistance of the condenser is

R = \(\frac{Q}{change in T_{cooling water } }\)

Explanation:

How will the rate of condensation of the steam and the mass flow rate of the cooling water can be determined

Q = [ mCp ( ΔT) ] \(_{cooling water }\)

(ΔT)\(_{cooling water}\) and  Q  is given

\(m_{cooling water}\)  = \(\frac{Q}{Cp[ T_{out} - T_{in} ] }\)

next the rate of condensation of the steam

Q = [ m\(h_{fg}\) ]\(_{steam}\)

  \(m_{steam} = \frac{Q}{h_{fg} }\)

Total resistance of the condenser is

R = \(\frac{Q}{change in T_{cooling water } }\)