Write a Python program to solve the following problem. Your solution should include a readme.md file (which includes details of how to run your assignment) and your Python program in a file named clean.py, and be submitted as a single .tgz file named pt3.tgz. You should ensure your solution works using the Python 3 interpreter on turing. Problem After adding additional busses to the routes you suggested, Codetown council is getting far fewer complaints about people missing their bus. However, complaints about the cleanliness of the busses are an issue Codetown's mayor would now like to address. The mayor's plan is to add a touchscreen device, running a program you develop, to each bus so passengers can indicate the current cleanliness. Your program must provide a graphical user interface that prompts users to enter a rating for the current cleanliness of the bus. The user should be able to choose an integer value between 1 and 5. Once at least one rating has been entered, the system should display the average rating given for the bus. Note: The specifications for this assignment are deliberately very brief. If anything is unclear, please use the discussion forums to clarify anything you are unsure of. Program specifications are often incomplete, and it is a useful skill to be able to elicit actual requirements.

A nutrunner on the engine assembly line has been failing for low torque. process includes identifying the root cause of the fault, and optimizing the nut runner's performance.

The first step would be to investigate the cause of the low torque issue in the nut runner. This may involve examining the machine, reviewing maintenance records, and gathering data on when and how the fault occurs. Once the root cause is identified, corrective actions can be taken. This may include repairing or replacing faulty components, recalibrating the nut runner, or updating software/firmware.

To prevent future occurrences, implementing a preventive maintenance program is crucial. Regular inspections, scheduled maintenance tasks, and performance testing can help identify and address potential issues before they lead to line stoppages. Additionally, providing thorough training to operators and maintenance staff on nutrunner operation, maintenance procedures, and troubleshooting techniques can contribute to quicker resolution of faults and reduce downtime.

Continuous monitoring of the nutrunner's performance is essential to ensure it operates within specified tolerances. This can be done through real-time data collection and analysis, including torque measurement and trend analysis. By closely monitoring the nutrunner's performance, any deviations or anomalies can be detected early, allowing for proactive interventions.

Overall, a systematic approach that combines investigation, preventive maintenance, employee training, and continuous monitoring can help solve the problem of the faulty nutrunner and improve the efficiency and productivity of the assembly line.

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Answer:

Both A and B  are correct.

Explanation:

The crankshaft sensor is attached to the crankshaft pulley on the

back side of the crankshaft. It is used to pass a signal to the PCM

which controls the ignition of an engine. This sensor helps in providing some basic timing for the signal. If there is a faulty sensor present, the signal will not be received by the PCM. So, it will affect the engine while starting. One reason can be a defective

assembly of the coil.

If there is a faulty \(\mathrm{PCM}\), the signal will not be received properly. This will not allow the passing of signals to the ignition system. This will cause a misfire. One of the most common causes of

misfire is a faulty ignition coil. This will affect the working of a

sensor. So, prevent engine from starting.

Answer:

B) voltage at the sending end of the feeder = 2483.66 v

Explanation:

attached below is the the equivalent circuits and the remaining solution  for option A

B) voltage = 2400 v

   I  = \(\frac{50*10^3}{2400}\)  =  20.83 A

calculate voltage at sending end ( Vs )

Vs = 2400 +  20.83 ∠ -cos^-1 (0.8) ( 0.75*2 + 0.5 + j 2 + j2 )

hence Vs = 2483.66 ∠ 0.961

therefore voltage at the sending end = 2483.66 v

Answer:

1. i. 20 Nm ii. 4.85 HP

2. 16.5 %

Explanation:

1) Determine the torque and the power developed at 4% slip when a reduced voltage of 340V is applied.

i. Torque

Since slip is constant at 4 %,torque, T ∝ V² where V = voltage

Now, T₂/T₁ = V₂²/V₁² where T₁ = torque at 690 V = P/2πN where P = power = 20 HP = 20 × 746 W = 14920 W, N = rotor speed = N'(1 - s) where s = slip = 4% = 0.04 and N' = synchronous speed = 120f/p where f = frequency = 60 Hz and p = number of poles = 4.

So, N' = 120 × 60/4 = 30 × 60 = 1800 rpm

So, N = N'(1 - s) = 1800 rpm(1 - 0.04) = 1800 rpm(0.96) = 1728 rpm = 1728/60 = 28.8 rps

So, T = P/2πN = 14920 W/(2π × 28.8rps) = 14920 W/180.96 = 82.45 Nm

T₂ = torque at 340 V, V₁ = 690 V and V₂ = 340 V

So, T₂/T₁ = V₂²/V₁²

T₂ = (V₂²/V₁²)T₁

T₂ = (V₂/V₁)²T₁

T₂ = (340 V/690 V)²82.45 Nm

T₂ = (0.4928)²82.45 Nm

T₂ = (0.2428)82.45 Nm

T₂ = 20.02 Nm

T₂ ≅ 20 Nm

ii. Power

P = 2πT₂N'

= 2π × 20 Nm × 28.8 rps

= 1152π W

= 3619.11 W

converting to HP

= 3619.11 W/746 W

= 4.85 HP

2) What must be the new slip for the motor to develop the same torque when the reduced voltage is applied

Since torque T ∝ sV² where s = slip and V = voltage,

T₂/T₁ = s₂V₂²/s₁V₁²

where T₁ = torque at slip, s₁ = 4% and voltage V₁ = 690 V and T₂ = torque at slip, s₂ = unknown and voltage V₂ = 340 V

If the torque is the same, T₁ = T₂ ⇒ T₂T₁ = 1

So,

T₂/T₁ = s₂V₂²/s₁V₁²

1 = s₂V₂²/s₁V₁²

s₂V₂² = s₁V₁²

s₂ = s₁V₁²/V₂²

s₂ = s₁(V₁/V₂)²

substituting the values of the variables into the equation, we have

s₂ = s₁(V₁/V₂)²

s₂ = 4%(690/340)²

s₂ = 4%(2.0294)²

s₂ = 4%(4.119)

s₂ = 16.47 %

s₂ ≅ 16.5 %

The correct answer is b. Rack ears. Rack ears are the pieces of metal on the sides of the switch that enable it to be mounted to a rack. They are adjustable and allow the switch to fit securely into the rack.

Metal is a type of material made up of many small particles that are tightly packed together. It is a hard, dense material that is highly versatile and can be used for a wide range of applications. Metals are typically composed of iron, nickel, cobalt, or other metallic elements. Metal is strong and can be used to create durable and long-lasting products, such as tools and furniture. Metal is also malleable and can be shaped into a variety of forms. It is also highly conductive, meaning it can transmit electricity, heat, and sound. Metals can be polished to create a glossy finish and are often used in jewelry and other decorative items. Additionally, metals are used in automotive, aerospace, and other industrial applications due to their strength and durability.

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A performance (HC) curve for a given centrifugal pump shows that option B. Flow rate decreases as the head required to overcome system resistance increases.

The Centrifugal pump curves are helpful because they display metrics for the performance of the pump based on the head (pressure) the pump produces and the water flow through the pump. Impeller diameter, head, as well as the pump speed all affect flow rates.

Note that an instrument that predicts a pump's head and flow performance is a centrifugal pump performance curve. Pumps provide low volume flow rates when pumping against high-pressure heads and high volume flow rates if they are said to be pumping against low-pressure heads.

Therefore, one can say that every centrifugal pump has a curve that it follows in order to function, and every curve has a start point (the shut-off or zero flow) and an end point (the end-of-curve or the maximum flow that can be achieved without overtaxing the motor).

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The component of an air conditioner or heat pump that collects heat from the indoor air is called the evaporator coil.

The evaporator coil is specifically located in the air handler of your air conditioner or, if you have a combined heating and air conditioning system, inside the furnace. Air is cooled and transferred to the evaporator coils of HVAC systems by refrigerant that has evaporated inside the coils.

The component of a heat pump or air conditioner that collects heat from the indoor air is called an evaporator coil. Either the furnace is connected to it or it is housed inside the air handler.

On the air intake side of the fan coil or the furnace's outlet side, respectively, is where the evaporator coil—also known as the cooling coil—is positioned within the house. Its role is to chill interior air so the blower fan can provide cool, refreshing air back into the space.

Therefore, the correct answer is option c) A single-family home.

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The amplitude of the sinusoid is 28384 *x soít cos.

Amplitude is defined as the greatest deviation from equilibrium of a point on a vibrating body or wave in terms of displacement or distance traveled. In most cases, amplitude is calculated by looking at a wave graph and determining the height of the wave from rest. The strength or intensity of the wave is gauged by its amplitude.

Sinusoid is defined as a signal with sine wave characteristics. In the liver, spleen, and bone marrow, sinusoids and irregular tubules transport blood in place of venules and capillaries. The sine or cosine functions from trigonometry form the foundation of sinusoidal signals, which are periodic functions.

Thus the amplitude of the sinusoid is 28384 *x soít cos.

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The given question is incomplete and hence, can not be solved, Still, i am adding some relevant information for your reference.

What are deflection angles?

Declination is an important concept in several fields such as surveying, photogrammetry, and the use of radar equipment. Understanding this concept is essential for predicting and modeling the motion of objects in space. In this article, you'll learn what the deflection angle is, its formula, and its application when working with radar and surveying.

In general, the deflection angle refers to the angle between the starting trajectory of a moving object and its initial direction. Additionally, the definition varies slightly in areas such as surveying, photogrammetry, and shooting. However, it focuses on the concept of measuring relative angles between paths. Light rays are refracted as they travel from one medium to another, for example, from air through a prism and back to air. Therefore, the incident beam changes direction at the air-prism interface. In addition, the exiting beam undergoes a further change in direction at the prism-air interface. The angle between the incoming and outgoing rays is the deflection angle (α) and is important for estimating the refractive index of the prism.

The given question is incomplete and hence, can not be solved, Still, i am adding some relevant information for your reference.

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Answer:

Diameter of pipe is 0.535 ft

Explanation:

see attachment, its works out 1st half

Answer: False

Explanation:

Prototypes don't do: (Option D) remain unchanged throughout the design process.

Prototypes are used to experiment with ideas, test improvements and fix flaws, and create physical models during the design process, but they can change throughout the design process.

Prototypes are used to experiment with ideas, test improvements and fix flaws, and create physical models during the design process. They are an important part of the design process, as they allow designers to identify problems, discover solutions to those problems, and make necessary changes during the development process. Prototypes are not static, and can change throughout the design process in order to more accurately reflect the final product. This allows designers to ensure that the final product meets their needs and the needs of their users.

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Answer:

the range of length scales is ( 0.0602 -  0.1094 )

Explanation:  

  Given the data in the question;

\(P_{absolute\) = 1300 kPa

V\(_{prototype\) = 406 km/h

speed of model nit more than 29%

we know that Reynolds number Re = pVl/μ = constant

p\(_m\)V\(_m\)l\(_m\)/μ\(_m\) = pVl/μ  

such that;

l\(_m\)/l = ( p/p\(_m\) )( V/V\(_m\) )( μ\(_m\)/μ )  ----- let this be equation 1

Now, for an idea gas; P = pRT { with constant temperature }

p / p = constant; p/p\(_m\) = p/p\(_m\)  

assuming μ\(_m\) = μ\(_m\)  

Therefore, the relation becomes;

l\(_m\)/l = ( p/p\(_m\) )( V/V\(_m\) )

from the given data;

l\(_m\)/l = ( 101/1300 )( V/V\(_m\) )

where our V\(_m\) = ( 1 ± 29% )V

so

l\(_m\)/l = ( 101/1300 )( V / ( 1 ± 29% )V )

l\(_m\)/l = ( 101/1300 )( 1 / ( 1 ± 0.29  ) )

Now, The minimum limit will be;

l\(_m\)/l = ( 101/1300 )( 1 / ( 1 + 0.29  ) )

= ( 101/1300 ) × ( 1 / 1.29 )

= 0.0602

The maximum limit will be;

l\(_m\)/l = ( 101/1300 )( 1 / ( 1 - 0.29  ) )

= ( 101/1300 ) × ( 1 / 0.71 )

= 0.1094

Therefore, the range of length scales is ( 0.0602 -  0.1094 )

Answer:dimples

Explanation:

The option that is not designed to absorb collision energy is Reinforcements.

Thus option D (reinforcements)  is correct.

Here,

Reinforcements are designed to strengthen and support the structure of the vehicle, and not to absorb collision energy.

Automobiles have several safety features designed to protect drivers and passengers in the event of a collision. These safety features include airbags, seat belts, crumple zones, and several other components.

Among these safety features, the ones designed to absorb collision energy are dimples, slots, and crush zones. They are made to absorb the force of the impact during a collision and help prevent serious injuries to the occupants of the vehicle.

Therefore, the correct answer is D, reinforcements, which are not designed to absorb collision energy.

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Answer:

Normal force = 0.326N

Explanation:

Given that:

mass released from rest at C = 3.7 g = 3.7 × 10⁻³ kg

height of the mass = 1.1 m

radius = 0.2 m

acceleration due to gravity = 9.8 m/s²

We are to determine the normal force pressing on the track at A.

To to that;

Let consider the conservation of energy relation; which says:

mgh = mgr + 1/2 mv²

gh = gr + 1/2 v²

gh - gr = 1/2v²

g(h-r) = 1/2v²

v² = 2g(h-r)

However; the normal force will result to a centripetal force; as such, using the relation

N =mv²/r

replacing the value for v² = 2g(h-r) in the above relation; we have:

Normal force = 2mg(h-r)/r

Normal force = 2 × 3.7 × 10⁻³ × 9.8 ( 1.1 - 0.2 )/ 0.2

Normal force = 0.065268/0.2

Normal force = 0.32634 N

Normal force = 0.326N

The regenerative Rankine cycle has a number of advantages over the simple Rankine cycle, such as Higher thermal efficiency, Lower exhaust, and Smaller physical size, Shorter startup time.

Higher thermal efficiency as the steam is recycled back to the boiler, resulting in higher efficiency and better fuel economy. Lower exhaust steam pressure and temperature, making it more suitable for applications with lower temperature differences between the heat source and the sink. Shorter startup time as the turbine does not require as much steam to reach operating conditions. Smaller physical size, as the high pressure and temperature equipment, is not necessary.

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At a methamphetamine lab, an EMT is at the highest risk for exposure to phosphine gas. Option A is the correct answer.

Phosphine gas is commonly produced as a byproduct of the illicit production of methamphetamine. Methamphetamine labs often employ dangerous and volatile chemicals, including phosphorus-based compounds, which can lead to the generation of phosphine gas. When responding to incidents at these labs, emergency medical technicians (EMTs) are exposed to a range of hazardous substances, including phosphine gas.

The toxic nature of phosphine gas poses significant health risks to individuals, and exposure can result in respiratory distress, lung damage, and other severe health complications.

Option A is the correct answer.

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Answer:

263.69 W.

(None of the option).

Explanation:

So, from the question above we are given the following parameters or data or information which is going to allow us to solve this question and they are;

(1). diameter of 25 cm.

(2). Initial temperature of 300°C.

(3).temperature drops to 200°C = final temperature.

Step one: Calculate the Reynolds number.

Reynolds number = 3 × 0.25/1.562 × 10^-5 = 48015.365.

Step two: Calculate average heat transfer coefficient.

The average heat transfer coefficient = k/D { 2 + (0.4Re^1/2 + 0.06Re^2/3} px^0.4 × (u/uz)^1/4.

The average heat transfer coefficient = 0.10204 × [ 2 + (87.65 + 79.26) (0.8719) × 0.8909.

average heat transfer coefficient = 0.20204 ( 2 + 129.652).

average heat transfer coefficient = 13.43/m^2.k.

Step three: The rate of heat transfer loss due to convection = (average heat transfer coefficient ) × πD^2 × ( T1 - T2).

The rate of heat transfer loss due to convection= 13.43 × π(0.25)^2 × (300 - 200).

=>The rate of heat transfer loss due to convection = 263.69 W.

a)  The initial and final temprature are 99.61°C and T3 = 259.07°C

b)   The mass of liquid water when the piston first start moving is 0g

Using the data provided:

Initial Pressure = P1 = 125kPa

Mass of Saturated Vapor Liquid = m = 5kg

Initial Mass of Liquid water = mf = 2kg

Initial Mass of Vapor = mg = 3kg

The temperature for a mixture of liquid steam saturated with water according to the thermodynamic table is:

T₁ = 99.61°C

The specific volume is:

vf = 0.001043m³/kg

And the saturated volume is:

vg = 1.6941m³/kg

Therefore, the volume in state 1 will be equal to:

V1 = mfvf + mgvg

V1 = (2kg)(0.001043m³/kg) + (3kg)(1.6941m³/kg)

V1 = 5.084m³

In state 3 then the volume will be equal to:

V3 = 1.2V1

V3 = 1.2(5.084m³)

V3 = 6.1008m³

Then the specific volume will be equal to:

v3 = V₃/m

v3 = 6.1008m³/5kg

v3 = 1.2202m³/kg

For a pressure of 300 kPa and the previous specific volume found through the thermodynamic table, the value of the temperature is:

T3 = 259.07°C

Question b) When the piston first stats moving at P₂ = 300kPa and V₂ = V₁ = 5.084m³

v₂ =V₂/m

v₂ = 5.084m³/5kg

v2 = 1.0168m³/kg

While at 300 kPa the value of the vapor saturated vg = 0.88578m³/kg This implies that the condition is met:

v2 > vg

Therefore, no liquid is there in-cylinder when piston stats moving, mf = 0kg

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Answer:

3

Explanation:

it is compulsory to have a bachelor's degree

Answer:

True

Explanation:

Tensile testing which is also referred to as tension testing is a process which materials are subjected to so as to know how well it can be stretched before it reaches breaking point. Hence, the statement in the question is true

The viscosity of the fluid at each temperature:

When you want to remove a stuck screw, there are some things you can try:  you should be cautious when working with metals because they can quickly corrode so, to remove the screw, you should use the right equipment and tools.

The following are some of the approaches you can use to remove the stuck screw: Using a rubber band: A rubber band can be wrapped over the screw head to get a good grip, then try unscrewing the screw while applying pressure in a counterclockwise direction with your screwdriver.Using heat: Heat the area surrounding the screw with a hairdryer or heat gun if possible, being careful not to harm the surrounding area. A heat gun is best because it produces a lot of heat. If the screw is rusted, heating it causes it to expand and break the bond that is keeping it locked. After it cools, the screw can be loosened with a screwdriver.

Try penetrating oil: WD-40 or Liquid Wrench can be used to remove the screw. Spray the penetrant around the screw head and allow it to sit for 30-60 minutes before attempting to unscrew it. The oil will break down any corrosion and loosen the bond between the screw and its surrounding area.Using pliers or vice-grips: If the screw head is protruding a bit, you might be able to grip it with a pair of pliers and unscrew it by turning it counterclockwise.

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Both Tech A and Tech B are correct.

Tech A's advice to start the lug nuts on the wheel studs by hand first and make sure the lug nut's surface matches the wheel hole is important to ensure proper fit and prevent cross-threading. Tech B's advice to lower the vehicle so the tires are partially on the ground to keep them from turning while tightening the lug nuts is also important to ensure proper torque and prevent the wheel from wobbling or coming loose. It is important to follow both of these steps when changing a tire to ensure safety while driving.

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Answer:

True

Explanation:

The driver is the one who applies the force,so the driver is the effort

these categories

THE NATURE OF MATERIALS

Review Questions

2.1

The elements listed in the Periodic Table can be divided into three categories. What are these categories and give an example of each?

Answer

. The three types of elements are metals (e.g., aluminum), nonmetals (e.g., oxygen), and semimetals