Below is a main point, a subpoint, and two sub-subpoints from a preparation outline about acoustical engineering.
Which is the subpoint?

A)Noise control is an issue both for indoor and outdoor settings.
B) Indoors, noise control deals with everything from electric appliances to crowd noise at sports events and concerts.
C) One major element in acoustical engineering is noise control.
D)Outdoors, noise control deals with the sounds of nature as well as with the sounds created by modern technology.

Answer: 162.4

Sorry if you get it wrong :(

Explanation:

Answer:A second-order low-pass Butterworth filter is ideal for smoothing signals and removing high-frequency noise

Explanation:

A second-order low-pass Butterworth filter is ideal for smoothing signals and removing high-frequency noise, which makes it a suitable choice for tracking a square wave signal. By removing the high-frequency components, the filter can provide a stable and accurate representation of the underlying square wave signal, making it easier to track and analyze.

An expression for the force per unit-length acting on an edge dislocation when subjected to a shear stress using energy/work principles can be f = τb / (4π).

We can utilise energy/work concepts to develop a formula for the force per unit length acting on an edge dislocation when subjected to a shear stress.

Think about a crystal with an edge dislocation that runs along the y-axis. The dislocation line is parallel to the Burgers vector (b) associated with the dislocation. In the x-direction, the material is under a shear stress ().

The energy per unit length of the dislocation line can be expressed as:

U = Gb² / (4π)

The work done per unit length can be expressed as:

W = τb

So, one can say that:

ΔU = W

Gb² / (4π) = τb

Rearranging the equation, we can solve for the force per unit length (f) acting on the dislocation:

f = τb / (4π)

Thus, this expression gives the force per unit length acting on an edge dislocation when subjected to a shear stress.

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Surge or inertia brake systems may be used on trailers and semitrailers with a gross weight of 4,536 kilograms or less. These brake systems are normally utilized in smaller trailers such as those used for boats and lightweight trailers.

A surge brake system, also known as an hydraulic brake, is one of the two most common types of brakes used on trailers. Surge brakes are hydraulically activated, which means that the brakes are activated when the tow vehicle slows down, causing the trailer to press forward and activate the brake's hydraulic system, which applies the brakes to the wheels.

An inertia brake system, also known as an electric brake, is the second most common type of brake used on trailers. Inertia brakes utilize a control unit mounted on the trailer that is activated when the tow vehicle slows down, causing the trailer to push forward and activate the brakes via an electrical signal sent to the control unit. As compared to surge brakes, inertia brakes are more efficient and can be used on heavier trailers as well.

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Answer:

That is not a question...

Answer:

In a 3-bit 1's complement system, the range of values that can be represented is from -3 to +3. The binary code for -3 in this system can be obtained as follows:

Step 1: Convert the decimal value of -3 to its binary equivalent.

-3 in decimal = -0b11 in binary (using two's complement notation)

Step 2: Convert the binary equivalent of -3 to its 1's complement.

To obtain the 1's complement, we simply invert all the bits of the binary number.

-0b11 in 1's complement = -0b00 (since all the bits are inverted)

Therefore, the binary code for -3 in a 3-bit 1's complement system is -0b00.

Answer:

transmission bandwidth required is very large.

Explanation:

There are 2n potential binary input possibilities for n input variables. There is just one potential output value for each given input combination.

The number of combinations is two to the power of N, and in this case, N is equal to eight, as shown by our general expression for a circuit with N inputs. Therefore, two to the power of eight, or 256, distinct configurations are possible for a circuit having eight inputs. The sequence of the results is irrelevant when calculating the overall outcomes of an event using combinations. In order to calculate combinations, divide the total number of items (n) by the number of items being chosen at a time (r).

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Answer:

Explanation:

The probability of n bits being in error is 10Cn × p^n, where ...

  10Cn = 10!/(n!(10-n!))

  10C1 = 10

  10C2 = 45

  10C3 = 120

This is the product of the probability that n bits can be in error and the number of ways that n bits can be chosen from the 10 in the word.

  n = 1: 10p

  n = 2: 45p²

  n = 3: 120p³

The given statement of "To fasten a duct hanger to a gypsum board wall, the best fastener would be an anchor shield" is false.

Anchor shields are typically used to secure objects to concrete or masonry walls.

For fastening a duct hanger to a gypsum board wall, the best fastener would be a toggle bolt or a self-drilling drywall screw. These fasteners are specifically designed for use in drywall and can provide a secure hold for the duct hanger.

Therefore, one can say that Anchor shields may not provide a secure hold in drywall, as they are designed for use in masonry or concrete.

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The post-order traversal of the resulting tree after adding 9, 15, 18, 12 and removing 9 is: 12, 18, 15.

Explanation:
1. Start with an empty tree.
2. Add 9: The tree is now just a single node with the value 9.
  9
3. Add 15: The tree now has two nodes, with 15 being the right child of 9.
  9
   \
    15
4. Add 18: The tree has three nodes, with 18 being the right child of 15.
  9
   \
    15
      \
       18
5. Add 12: The tree has four nodes, with 12 being the left child of 15.
  9
   \
    15
   /  \
  12   18

However, since we are asked to remove 9 from the tree, we can ignore it completely in the traversal. The resulting post-order traversal is:

6. Remove 9: Since 9 has only one child (15), we remove 9 and replace it with 15. The resulting tree is:
    15
   /  \
  12   18
7. Perform post-order traversal: Starting from the leftmost node, move to its parent, then its right sibling, and finally the root. This results in the post-order traversal: 12, 18, 15.

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A variable is a value in programming that is subject to change based on external factors or data that has been passed into the program.

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Answer:

Trim heel and transducer separations are two potential errors that can affect the accuracy of a ship's draft and trim readings.

Trim heel refers to the angle of inclination of a ship in the water, which can affect the readings taken by the ship's sensors. If the ship is not perfectly level in the water, the sensors may not provide accurate measurements of the draft or the amount of cargo on board. This can result in incorrect calculations of the ship's stability, which can lead to dangerous situations.

Transducer separation is another potential source of error that can affect the accuracy of a ship's draft readings. Transducers are sensors that are mounted on the hull of a ship to measure the water level and provide information on the ship's draft. If these sensors are not properly calibrated or if they are separated from the hull, they may provide inaccurate readings, which can lead to errors in the ship's stability calculations.

In summary, trim heel and transducer separations can result in inaccurate readings of a ship's draft and cargo load, which can affect the ship's stability and safety. It is important for ship operators to regularly calibrate and maintain their sensors to minimize the risk of errors due to trim heel and transducer separations.

Hope this helps!

Answer: temperature and pressure of a system

Explanation: Good evening.

The Clausius-Claperyon equation is used to measure enthalpy of vaporization of a liquid. I'm sure I'm missing more, but i gave the direct answer. Sorry I did not indulge into the answer more.

0.925

What is the size in square inches of a 550 MCM size of a cable

An eyewash station should be located within a maximum distance of 25 feet from every location where a person may come into contact with substances that can cause damage to their eyes.

Answer: C. carbon atoms

Explanation:

Non-renewable energy resources is a term usually used to refer to fossil fuels such as oil, natural gas and coal. These fossil fuels are so termed as they are remains of dead plant and animal matter from millions of years ago.

The main element in these fossil fuels is carbon which is the universal building block of life so will be present in the remains of previously alive matter. When non-renewable energy sources are therefore used, it is energy from carbon atoms that is being harnessed.

A. The Sun

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Section 420.6(a) of the National Electrical Code (NEC) states that the tables should not be used for calculating the maximum number of conductors that can be installed in various raceway and cable types.

It is a standard of practice for the safe installation of electrical wiring and equipment in the United States. The NEC is updated every three years to reflect the most up-to-date electrical safety practices.In 2020, the latest NEC was released. The NEC contains regulations for everything from electrical wire size to electrical panel installation. Its goal is to ensure the safe installation of electrical systems in both residential and commercial settings.

Section 420.6(a) is part of Article 420 of the NEC, which covers installation standards for electrical equipment used in a hazardous (classified) location. Hazardous locations are areas where combustible gases, vapors, dusts, or fibers exist in concentrations that could cause a fire or explosion if a source of ignition were present. Section 420.6(a) of the NEC states that the tables used to determine the maximum number of conductors that can be installed in various raceway and cable types should not be used for calculating.

The tables are not a substitute for proper engineering calculations when designing an electrical system. This means that the tables should be used as a general guide, but not as the only means of determining the maximum number of conductors that can be installed.

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Answer:

Explanation:

I'm not 100% this is what you want, but here it is:

2

3

13

8

11

A

13

To design a sequential circuit that compares input sequences \(w_{1}\)  and \(w_{2}\)  over four consecutive clock cycles and produces an output z, you can use a 4-bit shift register and a comparator.

1. Create two 4-bit shift registers for inputs\(w_{1}\)  and \(w_{2}\) . The shift registers will store the last four bits of each input sequence as they receive new bits with each clock cycle.
2. Connect the outputs of the two 4-bit shift registers to a 4-bit comparator. This comparator will compare the binary values of the two registers and produce an output signal that indicates if w1 is greater than w2 (w1 > w2).
3. Use an AND gate to produce the final output z. Connect the output of the 4-bit comparator to the input of the AND gate. Also, connect a signal representing (\(w_{1}\)  - \(w_{2}\) ) during any four consecutive clock cycles to the other input of the AND gate. If both inputs of the AND gate are high (1), the output z will be 1; otherwise, z will be 0.
With this circuit design, the input sequences on \(w_{1}\) and \(w_{2}\) will be compared over four consecutive clock cycles, and the output z will reflect the result of the comparison as specified in the problem statement.

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At the age of 15, Jack Andraka invented a new, non-invasive, paper-based test for the early detection of pancreatic cancer. He was inspired to create this device due to the death of a family friend from the disease. He was also motivated by the fact that the majority of pancreatic cancer cases are diagnosed too late for effective treatment.

The most important lesson the teams learned when participating in the Extreme by Design projects was the importance of collaborative problem-solving. Working in teams to solve complex problems with the help of mentors and professionals, the teams learned to effectively communicate and trust each other while also understanding the importance of planning and flexibility. This was an invaluable lesson that the teams took with them in their future endeavors.

The teams used a variety of tools to learn about the problems they were to solve. These included research and interviews with experts, visits to relevant sites, analysis of existing data and trends, and the use of digital tools like mapping, 3D modeling, and virtual reality. Additionally, the teams used the design thinking process as a way to think critically and creatively when solving problems.

In this episode, the team was asked to solve the problem of how to create a sustainable and affordable housing solution for low-income families in San Francisco. This was an important problem because San Francisco is facing an affordable housing crisis, with rising housing costs making it difficult for many people to find a place to live. The team sought to create a solution that would help provide secure housing for those in need.

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The answer is analyze

Answer:

The Coast Guard is the nation's oldest continuous seagoing service with responsibilities including search and rescue (SAR), maritime law enforcement (MLE), aids to navigation (ATON), ice breaking, environmental protection, port security and military readiness.

Explanation:

there

Answer:

a picture showing the actual parts of a circuit and their connection is call a Circuit diagram

The OBD-II data link connector is a standardized diagnostic connector found in most modern vehicles. It is usually located under the dashboard or steering wheel and is used to communicate with the vehicle's onboard computer systems.

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Answer: Photo lines

Explanation: made more sense