For a bolted assembly, the stiffness of each bolt is kb = 2 Mlbf/in and the stiffness of the members is km = 14 Mlbf/in per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. A fluctuating external load is applied to the entire joint with Pmax = 80 kips and Pmin = 20 kips. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade.
1. Determine the minimum number of bolts necessary to avoid yielding of the bolts.
2. Determine the minimum number of bolts necessary to avoid joint seperation.

Answer: 50

Explanation:

The correct answer is A. The inputRDD is computed and the data is loaded when the count() action is applied.

In Apache Spark, transformations are lazily evaluated, meaning they are not executed immediately when defined.

The actual computation happens when an action is called on the RDD. In this case, count() is an action that triggers the computation of the RDD and returns the count of elements.

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Answer:

  0 ft

Explanation:

The equation of the plane can be found from the cross product AC×BC. That vector is ...

  N = (2, 11, -6) × (-3, -6, 4) = (8, 10, 21)

Then the equation of the plane is ...

  8x +10y +21z = 14 . . . . . 14 = N·A

Point P satisfies this equation, so is on the plane. The distance is 0 feet.

  8(9) +10(11) -8(21) = 72 +110 -168 = 14

To convert the given regular expressions to NFAs using the procedure in Theorem 1.54, we'll follow the steps to construct an NFA for each expression:

1. (bUa*)b*at:

  Step 1: Convert each individual symbol to an NFA.

  - NFA for "b":

    Start state --b--> Accept state

  - NFA for "a":

    Start state --a--> Accept state

  Step 2: Apply the Kleene star to NFA for "a".

  - NFA for "a*":

    Start state --ε--> NFA for "a" --a--> Accept state

    Accept state --ε--> Start state

  Step 3: Concatenate the NFAs together.

  - NFA for "bUa*":

    Start state --b--> Accept state

    Start state --ε--> NFA for "a*"

    NFA for "a*" transitions to its accept state

  - NFA for "b*":

    Start state --ε--> Accept state

    Accept state --ε--> Start state

  - NFA for "at":

    Start state --a--> Accept state --t--> Final state

  Step 4: Concatenate all the NFAs together.

    Start state --b--> Accept state

    Start state --ε--> NFA for "a*"

    NFA for "a*" transitions to its accept state

    Accept state --ε--> Start state

    Start state --ε--> Accept state

    Accept state --ε--> Start state

    Start state --a--> Accept state --t--> Final state

2. a(aba)* U ab:

  Step 1: Convert each individual symbol to an NFA.

  - NFA for "a":

    Start state --a--> Accept state

  - NFA for "b":

    Start state --b--> Accept state

  Step 2: Concatenate the NFAs for "aba" together.

  - NFA for "aba":

    Start state --a--> Accept state --b--> Accept state --a--> Accept state

  Step 3: Apply the Kleene star to NFA for "aba".

  - NFA for "(aba)*":

    Start state --ε--> NFA for "aba"

    NFA for "aba" transitions back to its start state

    NFA for "aba" transitions to its accept state

  Step 4: Concatenate the NFAs for "a(aba)*" and "ab" together.

  - NFA for "a(aba)*":

    Start state --a--> NFA for "(aba)*"

    NFA for "(aba)*" transitions back to its start state

    NFA for "(aba)*" transitions to its accept state

  - NFA for "ab":

    Start state --a--> Accept state --b--> Final state

  Step 5: Apply the union operation to the two NFAs.

  - NFA for "a(aba)* U ab":

    Start state --a--> NFA for "(aba)*"

    NFA for "(aba)*" transitions back to its start state

    NFA for "(aba)*" transitions to its accept state

    Start state --a--> Accept state --b--> Final state

3. bat U (bab):

  Step 1: Convert each individual symbol to an NFA.

  - NFA for "b":

    Start state --b--> Accept state

  - NFA for "a":

    Start state --a--> Accept state

  - NFA for "t":

    Start state --t--> Accept state

  Step 2: Concatenate the NFAs for "bat" and "bab" together.

  - NFA for "bat":

    Start state --b--> Accept state --a--> Accept state --t--> Final state

  - NFA for "bab":

    Start state --b--> Accept state --a--> Accept state --b--> Final state

  Step 3: Apply the union operation to the two NFAs.

  - NFA for "bat U bab":

    Start state --b--> Accept state --a--> Accept state --t--> Final state

    Start state --b--> Accept state --a--> Accept state --b--> Final state

The notation "U" denotes the union operation (alternation) in regular expressions, "*" denotes the Kleene star (zero or more repetitions), and concatenation is denoted by the absence of an operator. These NFAs represent the corresponding regular expressions using the procedure given in Theorem 1.54.

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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)

Answer:

b

Explanation:

A closed section will have a bottom surface.

The fraction of light that will be transmitted through a 32 mm thickness of the transparent material is approximately 0.59049 or 59.049%.

To determine the fraction of light that will be transmitted through a 32 mm thickness of the transparent material, we need to use the information provided.

Let's assume that the fraction of nonreflected radiation transmitted through a 10 mm thickness is 0.90. This means that 90% of the incident light is transmitted through the 10 mm thickness.

Now, we need to find the fraction of light transmitted through the 32 mm thickness. To do this, we can assume that the fraction of transmitted light remains constant throughout the material.

Since 90% of the light is transmitted through 10 mm, we can say that 90% of the transmitted light will be transmitted through the next 10 mm as well.

This means that 90% of 90% (or 0.90) will be transmitted through the second 10 mm, which is 0.90 ˣ 0.90 = 0.81.

Similarly, 90% of 0.81 will be transmitted through the next 10 mm, which is 0.90 ˣ 0.81 = 0.729.

Continuing this pattern, 90% of 0.729 will be transmitted through the next 10 mm, which is 0.90 ˣ 0.729 = 0.6561.

Finally, 90% of 0.6561 will be transmitted through the last 2 mm, which is 0.90 ˣ 0.6561 = 0.59049.

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Answer:

The operating principle of a ramp type digital voltmeter is to measure the time that a linear ramp voltage takes to change from level of input voltage to zero voltage (or vice versa).

Given that an object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the +x-axis, and the second is 75.0 N along the +y-axis.Let F1 = 60.0 N act along x-axis and F2 = 75.0 N act along y-axis and F3 = ? be the magnitude of the third force acting on the object.Let the direction of F3 force makes an angle θ with the x-axis. Here, the direction of the resultant force is making an angle of θ with the +x-axis.

If F is the resultant force of F1 and F2, then F makes an angle of 53.13º with the x-axis.θ = tan-1 (75.0 N/60.0 N)= 53.13ºNow, we can find the resultant force using Pythagoras Theorem; that is,F = √(F1² + F2²)F = √((60.0 N)² + (75.0 N)²)F = √(3600 N² + 5625 N²)F = √9225 N²F = 96.04 NThe magnitude of the third force is 96.0 N. Thus, the correct option is (d) 96.0 N.

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Answer:

Emails and phone calls are both common forms of communication that are used in professional and personal settings. There are several similarities between email and phone calls:

1. Both are asynchronous forms of communication: Unlike instant messaging or face-to-face conversations, both emails and phone calls allow the sender or recipient to respond at their convenience. They don't require immediate attention or an instant response.

2. Both are written forms of communication: While phone calls rely on spoken words, emails are written. As a result, both can be used to convey detailed information and allow the sender to carefully consider their words before sending.

3. Both are forms of direct communication: Emails and phone calls both allow for direct communication between two parties. This can be beneficial for discussing sensitive information or resolving issues quickly.

4. Both can be used for formal and informal communication: Emails and phone calls can be used in both personal and professional contexts. They are both flexible forms of communication that can be adapted to fit different situations.

5. Both require attention to tone and etiquette: Just like with phone calls, emails require attention to tone and proper etiquette. Both forms of communication should be approached professionally and respectfully to ensure effective communication.

In conclusion, while there are differences between emails and phone calls, there are also similarities that make them useful communication tools. Both allow for direct, asynchronous communication and can be adapted to fit different situations.

Explanation:

The ways that burton could improve the process of producing snowboards, as well as their operations and their logistics systems are; Explained below

For burton to improve their competitive advantage, they can adopt various business methods to improve their performance as follows;

Logistics and supply chain management are very important factors that can be used to improve upon the competitiveness of business. Thus, snowboards flow should be well managed to gain improvement in efficiency and effectiveness of delivery which will ensure patronage of prospective customers.

Logistics systems perform various operations that leads to the competitive advantage I spoke about earlier. Finally, the production department should ensure that they produce quality products such that customers are motivated to repurchase.

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A series of program instructions embedded directly into html code for a web page; used to make a web page interactive is Script.

In computer programming, a script  can be described as the program or set of instructions  which is been read or executed by a different program as opposed to the computer processor howeverSome languages were created specifically to be script languages.

The meanings of script,  can be seen to implies scrivere, which means "to write," involve something that is written.

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Answer:

Maximum power is

P = V × I

P = 120 × 15

P = 1800 watt

Answer:

birds-eye view perspective

Explanation:

If someone asked me to design an office building, I would draw it from a birds-eye view perspective. I would draw it this way so I could map out where everything in the office would go and make sure I have enough space for everything. I would also draw it this way in order to clearly see where everything would go in the office. For instance, cubicles/desks could go in the bottom left corner, while the boss's office could go in the top right. It would be easier to organize and it would be easier for me to look back on when I need to actually design the office later.

(i'm not sure if this is what your question is asking for so i just made my best guess)

Subjective pressure refers to the internal psychological pressure an individual feels to meet certain expectations or achieve specific goals.

This pressure can be influenced by personal values, external expectations, and past experiences.

When it comes to determining an operating range, subjective pressure can impact decision-making by creating a sense of urgency or necessity to act within certain parameters.

For example, a business owner may feel pressure to keep costs low to remain competitive, which may lead to setting a narrow operating range for expenses.

On the other hand, if a company values innovation and risk-taking, there may be less subjective pressure to conform to traditional practices, allowing for a wider operating range in decision-making

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Rate of discharge in cumecs: 0.0048m³/s.

Velocity flow: 24m/s.

a. Convert from litres to m³.
120L*1000= 120000mL

120000mL=120000cm³

120000cm³/100³=0.12 m³.

b. Rate of discharge.

If  0.12 m³ where discharged in 25 seconds, the rate of discharge is:

0.12m³/25s = 0.0048m³/s.

Let's refer to the fluid mechanics equation that relates volume flow, area and velocity. This is the formula:

\(\frac{dV}{dt}=Av\); where the expression \(\frac{dV}{dt}\) is the volume flow rate (in m³/s); A is the cross-sectional area of the pipe (in m²), and v is the velocity flow (in m/s).

a. Solve the equation for v.

\(\frac{dV}{dt}=Av\\ \\(\frac{dV}{dt})/A=v\\ \\v=(\frac{dV}{dt})/A\)

b. Calculate the cross-sectional area of the pipe.

The cross-sectional area of the pipe is a circle. Hence, the formula of this area is:

\(A=\pi r^{2}\)

We'll have to convert the diameter to meters, because the formula for flow velocity needs the area in m². Let's go ahead and do that.

\(50mm/1000=0.05m\).

We were given the diameter, and the formula uses the radius, but the radius is just half of the diameter, therefore, we can substitute in toe formula like this:

\(A=\pi (\frac{0.05}{2} )^{2}=0.0020m^{2}\)

c. Substitute in the new expression for velocity flow and calculate.

\(v=(\frac{dV}{dt})/A\\ \\v=(\frac{0.048m^{3} }{1s})/(0.0020m^{2} )\\\\ v= 24m/s\)

Answer:

Explanation:

Let's consider the following problem:

Problem Statement: A coffee shop is interested in increasing their customer satisfaction ratings. They suspect that the temperature of the coffee and the brewing time may be factors that affect customer satisfaction.

Recognition of and statement of the problem:

The problem is to determine the effect of coffee temperature and brewing time on customer satisfaction ratings in a coffee shop.

Selection of the response variable(s):

The response variable is customer satisfaction rating, which can be measured on a scale of 1 to 10.

Choice of factors, levels, and ranges:

The factors to be considered are coffee temperature and brewing time. The temperature can be varied from 140°F to 200°F in increments of 10°F, and brewing time can be varied from 1 minute to 5 minutes in increments of 1 minute.

Factor 1: Coffee temperature (°F)

Levels: 140, 150, 160, 170, 180, 190, 200

Factor 2: Brewing time (minutes)

Levels: 1, 2, 3, 4, 5

The range of the factors has been chosen based on the typical range of temperatures and brewing times in a coffee shop, as well as the practical constraints of the experiment.

The next steps in the experimental design process would involve selecting an appropriate experimental design, such as a full factorial design or a fractional factorial design, and determining the number of replicates needed for each combination of factors. Finally, the experiment would be conducted and the results would be analyzed to determine the optimal temperature and brewing time for maximizing customer satisfaction ratings.

Answer:

14 cents

Explanation:

1 trillion US dollar

Refrigerants from a refrigeration system that has a burned out motor-compressor assembly can be dangerous because it could contain a high concentration of toxic chemicals such as chlorine, fluorine, or bromine. These chemicals can pose a significant danger to the environment and human health, especially if they are released into the atmosphere.

In a refrigeration system, the refrigerant is responsible for absorbing heat from the inside of the unit and releasing it outside. This process is repeated continuously to maintain the desired temperature. The compressor is the heart of the refrigeration system, and it compresses the refrigerant gas to increase its temperature and pressure so that it can release the heat it has absorbed. If the motor-compressor assembly burns out, the refrigerant may not be circulated properly, which can cause it to stagnate and decompose.

These chemicals can be harmful to people and the environment if they are released into the atmosphere.To avoid these hazards, it is essential to handle refrigerants carefully, especially when repairing or disposing of refrigeration units. Technicians who handle refrigerants must be trained and certified to ensure that they know how to handle these chemicals safely. They must follow proper procedures for handling and disposing of refrigerants to prevent environmental contamination and protect human health.

In summary, the refrigerants from a refrigeration system that has a burned out motor-compressor assembly can be dangerous because it could contain a high concentration of toxic chemicals such as chlorine, fluorine, or bromine, and it is important to handle these chemicals carefully to avoid environmental contamination and protect human health.

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Answer:

sorry i don't know

Explanation:

Angular velocity: The rate of change of angular displacement of a body with respect to time is angular velocity. It is de Angular velocity:

Angular velocity is a physical quantity used to describe the rate of change of angular displacement of an object or particle with respect to time. It is measured in radians per second (rad/s) or degrees per second (°/s). The angular velocity is a vector quantity and its direction is perpendicular to the plane of rotation. The magnitude of the angular velocity depends on the rate of change of the angle swept by an object as it rotates about a fixed point. It is commonly used in fields such as physics, engineering, and astronomy to describe the motion of rotating objects or particles. It is also an important parameter for understanding the dynamics of rotating systems and can be used to calculate other physical quantities such as angular acceleration, torque, and moment of inertia.

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Moreover, it is dependency preserving as all the functional dependencies in set F are preserved in the decomposed relations.

Given relation R(A, B, C, D, E) and set F= (A → B, A→C, C→A, BD→E) of functional dependencies, the decomposition of R into 3NF relations that is lossless-join and dependency preserving is as follows:

Firstly, we will determine the candidate keys for the given relation R(A, B, C, D, E) with set F= (A → B, A→C, C→A, BD→E) of functional dependencies.

1. By using A→B, we can say that A is a super key as it determines B. 2. By using A→C, we can say that A is a super key as it determines C. 3. By using C→A, we can say that C is a super key as it determines A. 4. By using BD→E, we can say that BD is a super key as it determines E. 5. Now, the candidate keys for relation R(A, B, C, D, E) are {A,C} and {BD}.

The set of functional dependencies F is not in 3NF because C is not a candidate key and the functional dependency C → A is a partial dependency.

Therefore, to convert the given relation R(A, B, C, D, E) into 3NF relations, we can use the following decomposition:

R1 (A, B) (using A → B)

R2 (A, C) (using A → C)

R3 (C, D, E) (using BD → E and C → A)

The above decomposition is lossless-join as the common attributes are present in the decomposed relations and the join of all three decomposed relations will give the original relation R. Moreover, it is dependency preserving as all the functional dependencies in set F are preserved in the decomposed relations.

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It's important to note that this speed difference is only noticeable for large programs. For small programs, the difference is negligible.

1. Shortcut operators are faster than the conventional arithmetic operators: This statement is true. Shortcut operators are faster because they combine arithmetic operations with variable assignments in a single statement. For example, instead of writing "a = a + 2", you can write "a += 2". This saves time and reduces the amount of code you need to write. However, it's important to note that this speed difference is only noticeable for large programs or when dealing with complex calculations. For small programs, the difference is negligible.
2. You can declare more than one variable in a single line: This statement is also true. In many programming languages, you can declare and initialize multiple variables on the same line. For example, instead of writing "int a; int b; int c;", you can write "int a, b, c;". This saves space and makes your code more concise. However, it's important to note that you should only do this if the variables are related and have the same data type.
3. You must use else after every if statement: This statement is false. It's not necessary to use else after every if statement. You can use if statements on their own if you don't need to execute any code if the condition is not true. However, if you need to execute code in both cases (true and false), then you should use else. It's also important to note that you can use else if to test for additional conditions if the first if statement is not true.

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Friction braking is indeed one of the oldest and most common methods of stopping a motor. This method is similar to automobile braking, where two friction surfaces come into contact and create resistance, which ultimately leads to stopping the motor.

Friction braking is a method of slowing down or stopping a vehicle by converting its kinetic energy into heat through the use of friction between the brake pads and a rotating disc or drum. When the brake pedal is pressed, hydraulic pressure is applied to the brake pads, which clamp onto the disc or drum and generate friction. The resulting frictional force slows down the rotation of the wheel and the vehicle. Friction braking is the most common type of braking system used in automobiles, aircraft, and other vehicles.

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check photo for answer

The size of aluminum conductors that should be installed to operate this load is equal to 570.059 Kilo-cmil.

Given the following data:

Length = 2800 ft.

Current = 86 A.

Voltage = 480 V.

First of all, we would calculate the maximum amount of voltage drop as follows:

E = 480 × 0.03

E = 14.4 Volts.

By applying Ohm's law, we would calculate the maximum amount of resistance as follows:

R = E/I

R = 14.4/86

R = 0.167 Ohms.

Next, we would determine the total length of the two conductors:

Total length = 2 × 2800

Total length = 5600 ft.

Now, we can determine the size of aluminum conductors:

CM = (KL)/R

CM = (17 × 5600)/0.167

CM = 570.059 Kilo-cmil.

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Answer:

Gas turbines in Helicopters require lesser space.

Explanation:

[1] In terms of Space Requirements:

The gas used in helicopters requires lesser space as compared to Automotive gas turbines. The gas in automobile have higher thermal efficiency.

[2]. In terms of Environmental impact:

The occurrence of environmental solution is very slim when  used in helicopters' engines.

[3]. In terms of power-to-weight ratio:

The vibrations in engines of helicopters make it to have lesser efficiency as compared to automobile.

[4]. In terms of Fuel availability:

Fuel is available. Automobile can make use of gas as fuel.

A net energy ratio (NER) of 0.2 implies that the energy resource in question requires a significant amount of energy to extract and produce, and that the energy output from the resource is relatively low.

This low NER suggests that the energy resource may not be a sustainable or efficient source of energy. Energy evaluators, who are responsible for assessing the viability and sustainability of energy resources, are likely to recommend against using this particular energy resource. This is because a low NER means that the energy resource is not efficient or cost-effective, and may not provide a significant energy output to meet energy demands.

Instead, energy evaluators may recommend investing in more sustainable and efficient energy resources, such as renewable energy sources like solar or wind power. These energy sources have higher NERs, meaning they provide a greater energy output relative to the energy input required for production. Additionally, renewable energy sources have a lower environmental impact compared to fossil fuels, which are often associated with high NERs.

In summary, a new energy resource with a net energy ratio of 0.2 is likely to be deemed inefficient and unsustainable by energy evaluators. As a result, investing in more sustainable and efficient energy resources, such as renewable energy sources, is recommended.

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