We have the a C++ string strg1 that contains "hello". To create another C++ string strg2 that con-tains "hell", we can use
1) string strg2 (strg1)
2) string strg2 (strg1, 0)
3) string strg2 (strg1. 0.4)
4) none of the above

You get a result immediately from Euler's formula:

e ^(i π/2) = cos(π/2) + i sin(π/2) = 0 + i * 1 = i

In walls or ceilings with a surface of concrete, tile, gypsum, plaster, or other noncombustible material, boxes shall be installed so that the front edge of the box will not be set back of the finished surface more than 1/4 inch (0.25 inch) according to the National Electrical Code (NEC) section 314.20.

The National Electrical Code (NEC) codifies the minimum requirements for safe electrical installations in a single, standardized source. While the NEC is not itself a U.S. law, the NEC is commonly mandated by state or local law. Where the NEC is adopted, anything less is illegal.

The National Electrical Code (NEC), or NFPA 70, is a United States standard for the safe installation of electrical wiring and equipment. It is part of the National Fire Codes series published by the National Fire Protection Association (NFPA). While the NEC is not itself a U.S. law, NEC use is commonly mandated by state or local law, as well as in many jurisdictions outside of the United States. The NEC codifies the requirements for safe electrical installations into a single, standardized source. The “authority having jurisdiction” inspects for compliance with these minimum standards.

learn more about National Electrical Code (NEC) here:

https://brainly.com/question/15434542

#SPJ11

Answer: Your welcome!

Explanation:

The v-t curve for this situation is shown in Figure 3. The particle starts at t=0 with an initial velocity of -14 m/s and then gradually accelerates until it reaches a maximum velocity of 16 m/s at t=15s.

The x-t curve for this situation is shown in Figure 4. The particle starts at t=0 at the origin and then gradually moves in the positive direction due to the acceleration. The maximum position coordinate of the particle is 180 m at t=15s.

(a) The particle's maximum velocity is 16 m/s.

(b) The particle's maximum position coordinate is 180 m.

A) The air speed at which the mode test should be run is; 400 km/hr

B) The predicted drag on the prototype dish is; 170 N

We are given;

diameter of satellite dish = 2m

Wind speed; Y = 80 km/hr

Diameter of model dish = 0.4 m

Reynolds number is essential for this, thus, the formula is;

Vm * Dm/vm = VD/v

where;

D is the diameter of the dish

Vm = (vm/v) (D/Dm) Y

If vm/v = 1, then

Vm = (2/0.4) * 80

Vm = 400 km/hr

B) The formula to find the drag on the prototype dish with all similarity conditions satisfied is;

F_p = (Fm/Vm² * Dm²) * Vp² * Dp²

Thus, plugging in the relevant values gives;

F_p = (170/(400² * 0.4²)) * 2² * 80²

F_p = 170 N

Read more about Model Drag force at; https://brainly.com/question/23942493

#SPJ1

Answer:

49 is equal to 7 times 7

Explanation:

A "perfect square" is a number that is the product of a whole number that is multiplied by itself.

In the example above, 49 is a perfect square because it is the product of the square of 7. If you multiply 7 by itself, the product is 49.

Other examples of perfect squares are:

25 = 25 is equal to 5 x 5

100 = 100 is equal to 10 x 10

81 = 81 is equal to 9 x 9

16 = 16 is equal to 4 x 4

64 = 64 is equal to 8 x 8

Answer:

D

Explanation:

Answer:

The equilibrium temperature is 109.7°C

The total entropy change for the process is 0.23 kJ/K

Explanation:

The parameters given are;

The initial temperature of aluminium, T₁ₐ = 140°C = 413.15 K

Mass, m₁, of aluminium block = 28 kg

The specific heat of aluminium, c₁, at 400 K = 0.949 kJ/(kg·K)

The initial temperature of iron, T₁ₙ = 60°C = 333.15 K

Mass, m₂, of iron block = 36 kg

The specific heat of iron, c₂, at room temperature = 0.45 kJ/(kg·K)

The heat lost by the aluminium = Heat gained by the iron

The heat lost by the aluminium = m₁ × c₁ × (T₁ₐ - Tₓ)

The heat lost by the aluminium = 28 × 0.949 × (413.15 - Tₓ)

The heat gained by the iron =  m₂ × c₂ × (Tₓ - T₁ₙ)

The heat gained by the iron =  36 × 0.45 × (Tₓ - 333.15)

Hence;

28 × 0.949 × (413.15 - Tₓ) = 36 × 0.45 × (Tₓ - 333.15)

26.572 × (413.15 - Tₓ) = 16.2 × (Tₓ - 333.15)

∴ (26.572 + 16.2) × Tₓ = 26.572 × 413.15 + 16.2 × 333.15

42.772·Tₓ = 16375.2518

Tₓ = 382.85 K = 109.7°C

The total entropy change of the process is given by the following relation;

\(\Delta S = \Delta S_{Fe} + \Delta S_{Al}\)

\(=m_{1}c_{1}ln\dfrac{T_{x}}{T_{1n}}+m_{2}c_{2}ln\dfrac{T_{x}}{T_{1a}}\)

\(=28 \times 0.949 \times ln\dfrac{382.85}{413.15}+36 \times 0.45 \times ln\dfrac{382.85}{333.15} = 0.23 \, \dfrac{kJ}{K}\)

Answer: Group A: 28.5 g, 28.4 g, 28.5 g

Explanation: They are repeated measurements that give values that are very close together.

Based on the information provided by these technicians, both of them are correct.

According to heating, ventilation, and air conditioning (HVAC), heat in an air-conditioning system generally flows from the hotter object to the colder object.

As the refrigerant evaporates in a small radiator-type unit (evaporator), it absorbs heat as it changes phase from liquid to gas. Also, as the heat is being absorbed by the refrigerant, the small radiator-type unit (evaporator) becomes cold.

In conclusion, we can logically deduce that both of them are correct.

Read more on heat flow here: https://brainly.com/question/16055406

#SPJ1

Explanation:

(a) Aluminum alloys are generally not viable as lightweight structural materials in humid environments because they are highly susceptible to corrosion by water vapor.

False, aluminium is not susceptible to any corrosion by the presence of water vapor.

(b) Aluminum alloys are generally superior to pure aluminum, in terms of yield strength, because their micro structures often contain precipitate phases that strain the lattice, thereby hardening the alloy relative to pure aluminum.

True.

(c) Aluminum is not very workable at high temperatures in air, in terms of extrusion and rolling, because a non-protective oxide grows and consumes the metal, converting it to a hard and brittle ceramic.

False, aluminium is stable at high temperatures and does not oxidizes.

(d) Compared to most other metals, like steel, pure aluminum is very resistant to creep deformation.

False,pure aluminium is not resistant to the creep deformation.

(e) The relatively low melting point of aluminum is often considered a significant limitation for high-temperature structural applications.

False.

In this exercise, we have to analyze the statements that deal with aluminum and its properties, thus classifying it as true or false:

A) False

B) True

C) False

D) False

E) True

Analyzing the statements we can classify them as:

(a) For this statement we can say that it is False, aluminium is not susceptible to any corrosion by the presence of water vapor.

(b) For this statement we can say that it is True.

(c) For this statement we can say that it is False, aluminium is stable at high temperatures and does not oxidizes.

(d) For this statement we can say that it is False, pure aluminium is not resistant to the creep deformation.

(e) For this statement we can say that it is True.

See more about aluminum properties at brainly.com/question/12867973

When a level 1 technician is unable to solve an issue, they should escalate the problem to a higher level of support or a more experienced technician for further assistance.

Level 1 technicians typically handle basic technical issues and provide initial troubleshooting and support. However, there are cases where they may encounter complex or challenging problems that go beyond their expertise. In such situations, it is important for the level 1 technician to recognize their limitations and escalate the issue to a higher level of support. This can involve seeking assistance from a more experienced technician, a specialized team, or a supervisor. By escalating the problem, the level 1 technician ensures that the issue is addressed by someone with the necessary skills and knowledge to effectively resolve it. This helps prevent prolonged downtime, minimizes potential mistakes, and ensures the problem is handled by the appropriate resources, ultimately leading to a more efficient and effective resolution.

Learn more about technician here;

https://brainly.com/question/14254004

#SPJ11

Engineers play a crucial role in developing and implementing technological innovations to cater to the needs of society. However, if the engineering solutions do not comply with established codes of ethics and professional standards, the legal implications can be significant.

Engineers are expected to follow ethical standards to ensure that their engineering solutions meet safety, quality, and environmental criteria. The Code of Ethics of Engineers outlines the ethical principles, values, and practices that engineers should follow in their professional duties.

A violation of the Code of Ethics or a failure to comply with professional standards can lead to legal consequences. If an engineer's solution is not compliant with safety standards, the individual or company responsible for implementing that solution may face fines, penalties, or legal action. One real-life example of legal consequences resulting from engineering solutions is the Deepwater Horizon oil spill. In 2010, an explosion on the Deepwater Horizon oil rig caused a massive oil spill in the Gulf of Mexico, resulting in significant environmental and economic damage.

Investigations revealed that several engineering solutions that were implemented on the rig were not in compliance with safety standards. Engineers had also failed to follow established procedures for ensuring safety and environmental protection. As a result, BP, the company responsible for the rig, faced significant legal consequences, including fines, penalties, and legal action by affected parties. Engineers involved in the project also faced legal consequences, including loss of license and potential criminal charges.

Engineers have a professional obligation to ensure that their solutions meet safety, quality, and environmental criteria. This means that they should adhere to established codes of ethics, follow established procedures for ensuring safety, and ensure that their solutions are in compliance with relevant laws and regulations. They also have a responsibility to report any violations or issues that could impact the safety or environmental impact of their solutions. Failure to meet these obligations can lead to legal consequences and impact public trust in the engineering profession.

Know more about Engineers here:

https://brainly.com/question/32766598

#SPJ11

Answer:

Concentric circles

Explanation:

Concentric circles are two or more circles which have the same center point. The region between two concentric circles is called an annulus.

You typically increase the decimal places from 1 to 2 for a A. Currency field.

When working with fields in a database, it is important to understand the various data types and how they should be formatted. One aspect of formatting involves the number of decimal places displayed for numeric fields. In this case, the question is asking about which field typically requires an increase in decimal places from 1 to 2. The options given are Currency, AutoNumber, Long Text, and Money. The field that typically requires an increase in decimal places from 1 to 2 is A. Currency. This is because currency values often require greater precision in order to accurately reflect the monetary amount being represented. To summarize, when working with a Currency field in a database, it is common to increase the decimal places from 1 to 2 in order to display a more precise monetary value.

To learn more about decimal places, visit:

https://brainly.com/question/50455

#SPJ11

Assuming that the intrinsic carrier concentration is roughly 1 × 10¹⁰ cm³, the built-in potential is given by: Therefore, the p-n junction has a built-in potential of about -0.18 V.

The difference in electron and hole concentrations on the p-side and n-side of a p-n junction controls its intrinsic potential. The equation can be used to compute it.

\(V_{bi} = \frac{kT}{q} \times \ln \frac{N_{d} \times N_{a}}{n_{i}^{2}}\)

where,

\(V_{bi}\) is the intrinsic potential (measured in volts),

k is the Boltzmann constant (8.62 × 10⁻⁵ eV/K),

T is the temperature (measured in kelvin),

q is the electronic charge (1.6 × 10⁻¹⁹ C),

\(N_{d}\) is the donor concentration (measured in cm³).

Nₐ is the acceptor (measured in cm³), and

\(n_{i}\) is the intrinsic carrier concentration (measured in cm³).

Now,

\(V_{bi} = \frac{kT}{q} \times \ln \frac{(1 \times 10^{17}) \times (2 \times 10^{17})}{n_{i}^{2}}\)

    \(= \frac{(8.62 \times 10^{-5}) \times (300)}{1.6 \times 10^-{19}} \times \ln \frac{2 \times 10^{17}}{n_{i}^{2}}\)

    \(= 0.0259 \times \ln \frac{2 \times 10^{17}}{n_{i}^{2}}\)

\(V_{bi} = 0.0259 \times \ln \frac{2 \times 10^{17}}{(1 \times 10^{10})^{2}}\)

     = \(0.0259 \times \ln \frac{2 \times 10^{17}}{1 \times 10^{20}}\)

     = 0.0259 × ln(2 × 10⁻³)

     = 0.0259 × (-6.9078)

     = -0.18 V

Learn more about junction Visit: brainly.com/question/13507783

#SPJ4

The answer is number 2) Increase the resistance of the concrete to freeze-thaw damage.

Air entrainment is used in concrete to Increase the resistance of the concrete to freeze thaw damage.

Microscopic air bubbles embedded in the concrete's surface reduce internal pressure by creating little spaces for water to expand into during freeze-thaw cycles.

Without these pockets, water has nowhere to escape, which causes concrete to crack and/or scale, severely reducing the lifespan of a structure. An air entraining additive, or AEA, is used to add air to the concrete mix.

To fit the requirements of the task at hand, a mix's air content can be changed. When pouring concrete in locations that experience freeze-thaw conditions, using air-entrained concrete is advantageous.

Therefore, Air entrainment is used in concrete to Increase the resistance of the concrete to freeze thaw damage.

To learn more about entrainment, refer to the link:

https://brainly.com/question/15180040

#SPJ2

Answer:

sorry di ko alam

Explanation:

A. To show the LastName, FirstName, and Phone of customers with an order TotalAmount greater than $100.00, you can use this SQL query:

```sql
SELECT LastName, FirstName, Phone
FROM Customers
WHERE CustomerID IN (
   SELECT CustomerID
   FROM Orders
   WHERE TotalAmount > 100.00)
ORDER BY LastName ASC, FirstName DESC;
```

D. To show the LastName, FirstName, and Phone of customers who have had an order with an Item named "Dress Shirt", use this SQL query:

```sql
SELECT LastName, FirstName, Phone
FROM Customers
WHERE CustomerID IN (
   SELECT DISTINCT o.CustomerID
   FROM Orders o
   JOIN OrderDetails od ON o.OrderID = od.OrderID
   JOIN Items i ON od.ItemID = i.ItemID
   WHERE i.ItemName = 'Dress Shirt')
ORDER BY LastName ASC, FirstName DESC;
```

F. To show the LastName, FirstName, and Phone of customers who have had an order with an Item named "Dress Shirt" using JOIN ON syntax, use this SQL query:

```sql
SELECT DISTINCT c.LastName, c.FirstName, c.Phone
FROM Customers c
JOIN Orders o ON c.CustomerID = o.CustomerID
JOIN OrderDetails od ON o.OrderID = od.OrderID
JOIN Items i ON od.ItemID = i.ItemID
WHERE i.ItemName = 'Dress Shirt'
ORDER BY c.LastName ASC, c.FirstName DESC;
```

To know more about SQL query visit:

brainly.com/question/28481998

#SPJ11

Answer:

Explanation:

code in the curly braces is treated as regular body and will be executed normally

Explanation:

Both technicians are correct. Technician A is correct that many torsion bars are adjustable to allow for ride height adjustment. This is because the amount of torsion in the bar determines the ride height, so adjusting the torsion can change the ride height. Technician B is correct that torsion bars are usually marked left and right and should not be switched side to side. This is because torsion bars are designed to work with a specific side of the vehicle, so switching them side to side can cause problems with the suspension and handling of the vehicle.

Answer:

2 1/3 A

Explanation:

power in = power out

V (14) =  6V a  

    14 = 6a

      a = 14/6 =

Specific gravity = 1.67.

The specific gravity of a substance is defined as the ratio of the density of that substance to the density of a reference substance, typically water. Since the weight of a submerged object is reduced by the weight of the fluid it displaces, we can use the difference in weight between the object in air and in water to calculate the volume of water displaced, and hence the density of the object. Dividing the density of the object by the density of water gives the specific gravity. In this case, the specific gravity is (50 N - 30 N) / (50 N - 30 N) = 1.67.

For more questions like Density click the link below: https://brainly.com/question/15164682                                                             #SPJ11

While Eli Whitney is primarily renowned as the inventor of the cotton gin, he was also the pioneer of the mass production process. In 1798, he figured out how to produce muskets by machine.

Contents. The cotton gin, created in 1794 by American-born inventor Eli Whitney (1765–1825), revolutionised cotton production by making the removal of seeds from cotton fibre much faster.

Most often credited to Eli Whitney, who received the patent in 1794, the cotton gin is a machine that separates cotton fibres from the seeds.

To know more about production visit:-

https://brainly.com/question/18564178

#SPJ4

Based on the information provided, we can logically deduce that technician A was right. Therefore, the correct answer is: a. A only.

In order for a technician to diagnose a brake system, the following symptoms should be adequately and appropriately checked and used by the technician:

This ultimately implies that, a symptom you should use when diagnosing brake system troubles is improper braking action.

Read more on braking system here: https://brainly.com/question/24751467

#SPJ1

Answer:

u do the same thing as part B but only add 100 k, I think, cuz I'm still in middle school but I mean if u see it asks u to do the same thing as B but C says that instead, u do it at half pressure and 100 k is higher temp so what its asking is to repeat b but the twist is u do it at half pressure and 100 k is the higher temp

hope this helps :)  

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

Learn more about single-phase power from

https://brainly.com/question/15776766

Mid-State Medical Center is considering upgrading their in-house MRI to a 3 Tesla magnet. The cost to buy and install the new scanner is $1.3 million. The scanner is expected to last seven years, and it should have a salifinge Supplies per scan total of $100 per scan in year 1 and increase 3% per year.


Maintenance will be a fixed $120,000 per year in the first year and increase 3.5% per year.To calculate the cash flows associated with this proposed project, let's first calculate the annual expenses:Year 1: Supplies per scan = $100 * 1 scan = $100Maintenance = $120,000Total expenses in Year 1 = $1,420,000Year 2: Supplies per scan = $100 * 1.03 = $103Maintenance = $120,000 * 1.035 = $124,200Total expenses in Year 2 = $1,426,200Year 3: Supplies per scan = $100 * 1.03^2 = $106.09
Maintenance = $120,000 * 1.035^2 = $128,944.70Total expenses in Year 3 = $1,434,944.70Continuing on with this same pattern, the total cash flows (expenses) associated with this proposed project will be:$1,420,000 + $1,426,200 + $1,434,944.70 + ... + (7th year total)

Learn more about cash flows here,
https://brainly.com/question/30066211

#SPJ11