When an electron in a valence band is raised to a conduction band by sufficient light energy, semiconductors start conducting ________.

Answer:

A carpenter square and a pipe fitter's square are both measuring tools used in different industries for different purposes.

Carpenter Square:

-Also known as a framing square or a try square, it is primarily used in carpentry and woodworking.

-Typically made of metal, it consists of two arms, usually at a right angle to each other, forming an L-shape.

-One arm, called the blade or tongue, is longer and typically used for measuring and marking straight lines and right angles.

-The other arm, called the heel or body, is shorter and used as a reference for making square cuts and checking for perpendicularity.

-Carpenter squares often have additional markings, such as rafter tables, allowing for various measurements and calculations used in carpentry tasks.

Pipe Fitter's Square:

-Also known as a pipe square or a combination square, it is specifically designed for use in pipe fitting and plumbing.

-It is typically made of metal and has a more compact and versatile design compared to a carpenter square.

-Pipe fitter's squares have multiple arms or blades that can be adjusted and locked at different angles, such as 45 degrees and 90 degrees.

-These squares are used for measuring and marking pipe cuts and angles, ensuring precise and accurate fits when joining pipes together.

-They often have additional features, such as built-in levels, protractors, and angle scales, to aid in pipe fitting and layout tasks.

Explanation:

Carpenters use carpenter squares for general woodworking and construction tasks, while pipe fitters squares are more specialized tools tailored to the specific needs of pipefitting and metalworking projects.

A framing square, often called a carpenter square, has two arms that normally meet at a right angle to form a "L" shape. The tongue has a shorter arm (about 16 inches) than the blade, which has a longer arm (often 24 inches).

A tri-square or combination square, commonly referred to as a pipe fitters square, frequently has a unique design. The basic design is a metal ruler with a sliding head that may be locked at several angles for flexible measuring and marking.

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Any Voltage used on board a ship if less than 1kV (1000 V) then it is called as LV (Low Voltage) system and any voltage above 1kV is termed as High Voltage. Typical Marine HV systems operate usually at 3.3kV or 6.6kV.

Explanation:

trust

Answer:

general duty clause

Explanation:

Engineering challenges that are needed to enhance virtual reality are resolution of video display, fast enough to refresh and update rates, wide field of view, reproduce sensations of sound, touch, and motion

In order to give the user an immersive sense of a virtual world, virtual reality (VR) uses pose tracking and 3D near-eye displays. Applications for virtual reality include entertainment (particularly video games), education (such as medical or military training), and business (such as virtual meetings).

The terms augmented reality and mixed reality, which are also sometimes referred to as extended reality or XR due to the nascence of the industry, are other distinct types of VR-style technology. However, definitions are currently changing as a result.

Standard virtual reality systems currently use multi-projected environments or virtual reality headsets to create lifelike images, sounds, and other sensations that mimic a user's actual presence in a virtual environment. The artificial world can be explored by someone using virtual reality equipment.

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There are two main scales used to measure various features of earthquakes: the Modified Mercalli scale and the Richter scale.

A typical technique for studying and discussing two or more items is to "compare and contrast" them by pointing out their similarities and differences. In academic settings, this strategy is frequently applied when contrasting various literary masterpieces, scientific hypotheses, or historical occurrences. One can learn more about the traits and importance of two or more objects, ideas, or occurrences by evaluating both their similarities and contrasts. Analyzing several facets of the things being compared, such as their structure, function, history, or cultural context, is one way to compare and contrast them. With the discovery of patterns, connections, and correlations between various items, new views and insights may be gained.

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The Modified Mercalli Intensity Scale (MMI) and the Richter Magnitude Scale are two different methods used to measure the strength and impact of earthquakes.

The MMI scale measures the effects of an earthquake on people, buildings, and the environment. It is a subjective measure that uses a rating system of I to XII to describe the level of shaking and damage caused by an earthquake at a specific location. It takes into account the intensity of shaking, the duration, and the impact on people and structures.

The Richter Magnitude Scale measures the amount of energy released by an earthquake at its source. It is a quantitative measure that uses a logarithmic scale from 1 to 10 to describe the strength of an earthquake. Each increase in the magnitude of one unit corresponds to an increase in the amplitude of ground motion by a factor of 10.

In summary, the MMI scale measures the effects of an earthquake on people and structures, while the Richter scale measures the amount of energy released by an earthquake at its source.

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a. a = 12 is the solution to the given congruence relation. b. the positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

(a) The main answer: The integer a that satisfies a ≡ -15 (mod 27) is 12.

To find the value of a, we need to consider the congruence relation a ≡ -15 (mod 27). This means that a and -15 have the same remainder when divided by 27.

To determine the value of a, we can add multiples of 27 to -15 until we find a number that falls within the range of {0, 1,..., 26}. By adding 27 to -15, we get 12. Therefore, a = 12 is the solution to the given congruence relation.

(b) The main answer: The positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

Supporting explanation: Two integers are relatively prime if their greatest common divisor (GCD) is 1. In this case, we are looking for positive integers that have no common factors with 12 other than 1.

To determine which numbers satisfy this condition, we can examine each positive integer less than 12 and calculate its GCD with 12.

For 1, the GCD(1, 12) = 1, which means it is relatively prime to 12.

For 2, the GCD(2, 12) = 2, so it is not relatively prime to 12.

For 3, the GCD(3, 12) = 3, so it is not relatively prime to 12.

For 4, the GCD(4, 12) = 4, so it is not relatively prime to 12.

For 5, the GCD(5, 12) = 1, which means it is relatively prime to 12.

For 6, the GCD(6, 12) = 6, so it is not relatively prime to 12.

For 7, the GCD(7, 12) = 1, which means it is relatively prime to 12.

For 8, the GCD(8, 12) = 4, so it is not relatively prime to 12.

For 9, the GCD(9, 12) = 3, so it is not relatively prime to 12.

For 10, the GCD(10, 12) = 2, so it is not relatively prime to 12.

For 11, the GCD(11, 12) = 1, which means it is relatively prime to 12.

Therefore, the positive integers less than 12 that are relatively prime to 12 are 1, 5, 7, and 11.

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The use of salt on snowy and icy roads could have a negative effect on Montgomery County's Water Supply. The salt used on the roads for melting ice can cause a number of issues for water supplies and ecosystems, and Montgomery County is no exception.

When salt is used to melt snow and ice on the road, it can dissolve into the water and run off into streams, rivers, and lakes. The salt lowers the freezing point of water and melts ice, but it also alters the chemical makeup of the water, making it more saline. It can also damage aquatic plants, animals, and fish that rely on freshwater systems.

Therefore, it is important to take steps to minimize the use of salt or to use alternatives, such as sand or beet juice, which are less harmful to the environment and water supplies.

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The Comma number format is one of Excel's many number formats. This format converts numbers into thousands, millions, billions, and trillions, and separates them with commas.

In this  I'll explain how to format the range E6:E13 using the Comma number format and no decimal places to match the formatting in column F.In order to format the range E6:E13 using the Comma number format and no decimal places to match the formatting in column F, the following steps need to be followed:1. Select the range E6:E13.2. Right-click and select the Format Cells option.3. Click on the Number tab.4. Click on the Comma style format.5. In the decimal places field, enter 0.6. Click OK.The range E6:E13 will now be formatted using the Comma number format and no decimal places, similar to the formatting in column F. Comma number format is ideal for large numbers because it makes them easier to read by visually breaking them up into groups of three digits separated by commas.

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Answer:

Tires or wheels? I think this is the answer. ^_^

Explanation:

I don't know how?

i hate it that it says 20 charcters long

Answer:

Reduced engine power: The engine may not produce as much power as it normally would, and it may feel sluggish or underpowered.

Decreased fuel efficiency: The lean air-fuel mixture may cause the engine to burn fuel less efficiently, resulting in reduced fuel economy.

Higher exhaust gas temperatures: The lean air-fuel mixture may cause the exhaust gases to be hotter than normal, which can be indicated by higher exhaust gas temperatures.

Knocking or pinging sounds: The lean air-fuel mixture may cause the fuel to ignite prematurely, which can create knocking or pinging sounds.

Misfiring: The lean air-fuel mixture may cause the engine to misfire, resulting in rough operation and potentially causing the check engine light to come on.

Explanation:

The concentration ratio for the PTC is approximately 1.48, and the length of the parabolic surface is approximately 5.2 meters.

To determine the concentration ratio and length of the parabolic surface for a Parabolic Trough Collector (PTC) with the given parameters, we can use the following formulas:

Concentration Ratio (CR) = Rim Angle / Aperture Angle

Length of Parabolic Surface (L) = Aperture^{2} / (16 * Focal Length)

First, let's calculate the concentration ratio:

Given:

Rim Angle (θ) = 80º

Aperture Angle (α) = 5.2 m

Concentration Ratio (CR) = 80º / 5.2 m

Converting the rim angle from degrees to radians:

θ_rad = 80º * (π / 180º)

CR = θ_rad / α

Next, let's calculate the length of the parabolic surface:

Given:

Aperture (A) = 5.2 m

Receiver Diameter (D) = 50 mm = 0.05 m

Focal Length (F) = A^{2} / (16 * D)

L = A^{2} / (16 * F)

Now we can substitute the given values into the formulas:

CR =\((80º * (π / 180º)) / 5.2 m\)

L = \((5.2 m)^2 / (16 * (5.2 m)^2 / (16 * 0.05 m))\)

Simplifying the equations:

CR ≈ 1.48

L ≈ 5.2 m

Therefore, the concentration ratio for the PTC is approximately 1.48, and the length of the parabolic surface is approximately 5.2 meters.

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Answer:

The major financial flop that led to the end of the Sega Dreamcast and ultimately caused Sega to stop making game consoles altogether is:

3: A game called Shenmue, that cost more than $70 million to make, meant that everyone who owned a Dreamcast needed to buy two copies of the game just for Sega to make back the money they had spent to develop it-which didn't happen.

Explanation:

Shenmue, released on December 29, 1999, was created for Dreamcast by Suzuki.  It was widely described as the most expensive video game ever produced.  It had an estimated production and marketing cost of between US$47 and $70 million, according to the latest available data.

Answer:

Explanation:

It really all depends, it varies from 375 to 830, you can't mark one as " Lamborghinis have this much hp always " seeing it fluctuates so much car to car

As a general overview, the term "Weld Center Vertices" typically refers to a feature or option that is used in 3D modeling or computer-aided design (CAD) software.

This feature is usually used in conjunction with a "Fill Hole" mode, which is a tool that is used to fill in holes or gaps in 3D models.

When the "Weld Center Vertices" option is enabled in a "Fill Hole" mode, the software will attempt to connect the vertices or points around the hole by creating a new surface or face that is centered on the vertices. This can be useful for creating a more uniform and seamless 3D model, particularly when dealing with complex shapes or irregular surfaces.

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Answer:

Explanation:

Temperature of atmospheric air To = 25°C = 298 K

Free  stream velocity of air Vo = 25 m/s

Length and width of plate = 1m

Temperature of plate Tp = 125°C = 398 K

We know for air, Prandtl number Pr = 1

And for air, thermal conductivity K = 24.1×10?³ W/mK

Here, charectorestic dimension D = 1m

Given value of Reynolds number Re = 105

For laminar boundary layer flow over flat plate

= 3.402

Therefore, hx = 0.08199 W/m²K

So, heat transfer rate q = hx×A×(Tp – To)

                                          = 0.08199×1×(398 – 298)

There are different kinds of Ac motors. If the goal is to power three-phase AC motor, the three-phase motor can be run from a single-phase power source.

The act of running a three phase motor on single phase power is very possible. The thing one has to do is  to connect or wire the single phase power to the input side of the variable frequency drive that one has and then connect or wire the three phase power of one's motor to the output part of the drive.

Conclusively, A three phase system is known to be able to send a lot of power when viewed with the single phase system.  The three circuit conductors is known to have three alternating currents

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The MOS capacitance is a very helpful tool for assessing the construction of MOS integrated circuits and forecasting the properties of MOS transistors.

A semiconductor is what. Semiconductors. Semiconductors are substances with conductivity intermediate between that of conductors (often metals) and that of nonconductors or insulation (such as most ceramics). Semiconductors can be made of compounds like indium gallium or cadmium selenide or pure elements like silicon or germanium.

The reason a material is termed a semiconductor is because it has a resistance that is between the resist typical of insulators and metals, or that "semi"-conducts electricity in a way.

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The ultimate bearing capacity factor of the square footing is approximately X psf, while the allowable bearing capacity is approximately Y psf. These values are calculated based on the given parameters, including the unit weight of soil, cohesion, internal friction angle, factor of safety, and dimensions of the footing.

To determine the ultimate bearing capacity (qu) of the square footing, we can use the equation:

qu = [(gamma - gamma_sat)B + 2cNc + gammaDfNq + 0.5BgammaN_gamma]N_q

Where:
- gamma is the unit weight of soil (113 pcf),
- gamma_sat is the saturated unit weight of soil (128 pcf),
- B is the width of the footing (3 ft),
- c is the cohesion of the soil (0 psf),
- Nc, Nq, and N_gamma are bearing capacity factors dependent on the internal friction angle (35 degrees) and footing shape,
- Df is the depth factor, which depends on the depth of the footing below the ground surface (D+ - h),
- N_q is a bearing capacity factor dependent on the effective overburden pressure (gammaDf).

By substituting the given values into the equation and performing the calculations, we can determine the ultimate bearing capacity of the footing.

The allowable bearing capacity (qa) is calculated by dividing the ultimate bearing capacity (qu) by the factor of safety (FS). In this case, FS is given as 2. Therefore, qa = qu / FS. By substituting the value of qu into this equation, we can calculate the allowable bearing capacity.

Please note that the actual calculations may involve rounding at various steps, which could slightly affect the final values.

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I'd say number 4, number 3 looks like an exhaust valve

Answer:

a. 41

b. i. 15 mA ii. 625 mA

c. 192 Ω

Explanation:

Here is the complete question

A high-voltage discharge tube is often used to study atomic spectra. The tubes require a large voltage across their terminals to operate. To get the large voltage, a step-up transformer is connected to a line voltage (120 V rms) and is designed to provide 5000 V (rms) to the discharge tube and to dissipate 75.0 W. (a) What is the ratio of the number of turns in the secondary to the number of turns in the primary? (b) What are the rms currents in the primary and secondary coils of the transformer? (c) What is the effective resistance that the 120-V source is subjected to?

Solution

(a) What is the ratio of the number of turns in the secondary to the number of turns in the primary?

For a transformer N₂/N₁ = V₂/V₁

where N₁ = number of turns of primary coil, N₂ =number of coil of secondary, V₁ = voltage of primary coil = 120 V and V₂ = voltage of secondary coil = 5000 V

So,  N₂/N₁ = V₂/V₁

N₂/N₁ = 5000 V/120 V = 41.6 ≅ 41 (rounded down because we cannot have a decimal number of turns)

(b) What are the rms currents in the primary and secondary coils of the transformer?

i. The rms current in the secondary

We need to find the current in the secondary from

P = IV where P = power dissipated in secondary coil = 75.0 W, I =rms current in secondary coil and V = rms voltage in secondary coil = 5000 V

P = IV

I = P/V = 75.0 W/5000 V = 15 × 10⁻³ A = 15 mA

ii. The rms current in the primary

Since N₂/N₁ = V₂/V₁ = I₁/I₂

where N₁ = number of turns of primary coil, N₂ =number of coil of secondary, V₁ = voltage of primary coil = 120 V, V₂ = voltage of secondary coil = 5000 V, I₁ = current in primary coil and I₂ = current in secondary coil = 15 mA

So, V₂/V₁ = I₁/I₂

V₂I₂/V₁ = I₁

I₁ = V₂I₂/V₁

= P/V₁

= 75.0 W/120 V

= 0.625 A

= 625 mA

(c) What is the effective resistance that the 120-V source is subjected to?

Using V = IR where V =  voltage = 120 V, I = current in primary = 0.625 A and R = resistance of primary coil

R = V/I

= 120 V/0.625 A

= 192 V/A

= 192 Ω

The Power method in MATLAB iteratively applies matrix-vector multiplications to estimate the dominant eigenvalue and eigenvector of a sparse matrix A.

Here's an example of a MATLAB function that implements the Power method:

function [dominantEigenvalue, dominantEigenvector] = powerMethod(k, n, A)

   % Initialize the initial guess vector

   x = ones(n, 1);

   % Perform the Power method for k iterations

   for i = 1:k

       % Update the vector using matrix-vector multiplication

       x = A * x;

       % Normalize the vector

       x = x / norm(x);

   end

   % Compute the dominant eigenvalue using Rayleigh quotient

   dominantEigenvalue = (x' * A * x) / (x' * x);

   % Set the dominant eigenvector

   dominantEigenvector = x;

end

To use this function, you can call it with the desired number of iterations (`k`), the size of the matrix (`n`), and the sparse matrix (`A`) as inputs. It will return the dominant eigenvalue (`dominantEigenvalue`) and its corresponding eigenvector (`dominantEigenvector`).

Note that this implementation assumes that the matrix `A` is a square sparse matrix and the initial guess is a vector of 1's. You may need to modify the function according to your specific requirements, such as handling different initial guesses or adding error checking for input validity.

You can use the `disp` function to print out the results within the function or display them outside of the function as per your needs.

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Answer:

are you wht

didn't understand the question

Answer:

Yes/No

Explanation:

NANI?!

Answer:

Betbtybrbytntrnyrnrynunjhjhnthnnhtnnthnhtnnhnhrnntnthhnhnhtnthn

Explanation:

In the energy balance equation,Energy is transferred between the system and the surroundings in the form of heat and work, resulting in a change of total energy of the system.

Now that you know how to calculate the several types of energy—kinetic, potential, and internal—as well as how energy is transported through the use of heat and work, it's time to put everything together. The conservation of energy principle of the First Law of Thermodynamics was applied to stationary closed systems. To proceed between two states in a closed system (no mass transfer):

ΔE=ΔKE+ΔPE+ΔU=Q-W

Become familiar with this one by heart! A change in the system's overall energy is the result of energy being transmitted between the system and its surroundings in the form of heat and work. The sign standards for heat and work that we previously learnt are important to keep in mind when applying this equation.

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The correct answer is The energy balance equation is a fundamental principle in thermodynamics that describes the relationship between the energy that enters and leaves a system, and the change in the internal energy of the system.

In this equation, Ein represents the energy that enters the system, and it can be any kind of energy, including heat, work, electromagnetic radiation, chemical energy, or any other form of energy that can be exchanged between the system and its surroundings. The energy balance equation applies to all types of systems, from small, simple systems to large, complex systems, and it is a fundamental principle that underlies many of the laws and principles of thermodynamics. By applying the energy balance equation, it is possible to analyze and predict the behavior of systems in various situations, such as in heat transfer, power generation, refrigeration, and many other fields. Overall, the energy balance equation is a fundamental principle in thermodynamics that is essential for understanding and predicting the behavior of physical systems.

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Answer:

If you are driving below 40 mph, you should leave at least one second for every 10 feet of vehicle length.