The recovery stage of annealing involves O a formation of polygonised subgrain structure O a reduction in the dislocation density an increase in ductility O an increase in strength both a and c

Answer:

Explanation:

Crystalline melting temperature (Tm) is termed as the temperature required for a  crystalline polymer to change to a fluid or glasslike crystalline spaces of a semi-crystalline polymer liquefy (expanded sub-atomic movement).  

Crystallization of polymers is an interaction related with incomplete arrangement of their atomic and molecular chains. These chains crease together and structure requested districts called lamellae, which form bigger spheroidal designs named spherulites. Polymers can solidify after cooling from melting, mechanical extending, or dissolvable dissipation. Crystallization influences the optical, mechanical, and synthetic chemical properties of the polymer.  

For a crystalline polymer, a required polymer chain is present in or goes along a few crystalline and amorphous zones. The crystalline zones are comprised of intermolecular & intramolecular arrangements or deliberate and thus firmly stuffed plan of atoms or chain fragments, and an absence of it brings about the development of amorphous zones.  

The mechanical property boundary, for example, shear modulus expansions in the temperature of perception for polymer material framework.  

The temperature reaction of direct linear polymers might be seen as partitioned into three particularly separate fragments:  

1. Above Tm: The polymer stays as fluid whose consistency & viscosity would rely upon atomic molecular weight and temperature.  

2. Between Tm and Tg: This area may go between close to 100% crystalline & 100% amorphous chain atomic bunches relying upon the polymer underlying consistency. The amorphous part carries on similar to supercooled fluid in this section. The generally actual conduct of the polymer in this moderate portion is similar to an elastic rubber.  

3.Below Tg: The polymer material saw as glass is hard and inflexible, showing and emanating a predetermined coefficient of thermal extension. The glass is more like a crystalline strong than the fluid in personal conduct standard regarding mechanical property boundaries. In regard to the molecular atomic request, in any case, the glass all the more intently takes after the fluid. There is little contrast between the direct linear and cross-connected polymer beneath Tg.

Answer:

The City can grant higher budgets to emergency services like the Fire Department, so a higher budget will allow engineers & scientists to innovate new technology and add more fire stations across the city.

Explanation:

If the diameter of the bar is 0.490 at this load, determine I. the engineering stress and strain, and [2] II. the true stress and strain is 1561. 84 MPa.

Strain is a unitless degree of ways a great deal an item receives larger or smaller from an implemented load. Normal stress happens while the elongation of an item is in reaction to an everyday pressure (i.e. perpendicular to a surface), and is denoted via way of means of the Greek letter epsilon.

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Answer:

Sure, I can help you with that. Here are the steps involved in solving the problem:

1. **Define the variables.**

The following variables are used in the problem:

* **h:** The height of the plate, which is 2 mm = 0.002 m

* **L:** The length of the plate, which is 1.25 m

* **W:** The width of the plate, which is 1.25 m

* **v:** The velocity of the plate, which is 0.18 m/s

* $\mu$: The dynamic viscosity of the oil, which is 2.5 N.s/m²

* $\rho$: The density of the oil, which is 0.85 * 1000 kg/m³ = 850 kg/m³

* g: The acceleration due to gravity, which is 9.8 m/s²

* F: The force required to lift the plate

2. **Determine the area of the plate.**

The area of the plate is calculated as follows:

```

A = L * W = 1.25 m * 1.25 m = 1.5625 m²

```

3. **Determine the volume of the oil displaced by the plate.**

The volume of the oil displaced by the plate is calculated as follows:

```

V = A * h = 1.5625 m² * 0.002 m = 0.00390625 m³

```

4. **Determine the weight of the oil displaced by the plate.**

The weight of the oil displaced by the plate is calculated as follows:

```

W_o = \rho * V * g = 850 kg/m³ * 0.00390625 m³ * 9.8 m/s² = 3.37 N

```

5. **Determine the force required to overcome the viscous drag on the plate.**

The force required to overcome the viscous drag on the plate is calculated as follows:

```

F_v = \mu * L * v = 2.5 N.s/m² * 1.25 m * 0.18 m/s = 0.46 N

```

6. **Determine the total force required to lift the plate.**

The total force required to lift the plate is calculated as follows:

```

F = F_o + F_v = 3.37 N + 0.46 N = 3.83 N

```

Therefore, the force required to lift the plate with a constant velocity of 0.18 m/s is 3.83 N.

Explanation:

Answer:

the class is different and the topic treated in class 1 is different from class 3

Answer:

Remove, Alarm, Confine and Extinguish or Evacuate

Explanation:

This easy to remember acronym is our University procedure in the case of a fire. Particularly in the hospital, every staff member is trained to recognize and respond appropriately in the case of a fire using this term.

Answer:

10.5

Explanation:

Measuring a Brake Drum, the Brake Micrometer is set to a Base Drum Diameter of 10 Inches plus four notches, and the dial reads 22.  Diameter of the drum is 10.5.

Any straight line segment that cuts through the center of a circle and has ends that are on the circle is considered a circle's diameter in geometry. It is also known as the circle's longest chord.

The diameter of a sphere can be defined using either of the two methods. In more recent usage, the diameter can also refer to a diameter's length, or displaystyle d.

As opposed to a diameter, which refers to the line segment itself, one uses the term "diameter" in this context since all diameters of a circle or sphere have the same length, which is equal to twice the radius "displaystyle r.

Therefore, Measuring a Brake Drum, the Brake Micrometer is set to a Base Drum Diameter of 10 Inches plus four notches, and the dial reads 22.  Diameter of the drum is 10.5.

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a) To calculate the real and reactive power associated with each circuit element in the circuit shown in Fig. P9.63, we need to use the given voltages and the impedance values of the elements. For element a, we have a resistance of 10 ohms and a reactance of 20 ohms, so the real power is P = V^2/R = (60^2)/10 = 360 W and the reactive power is Q = V^2/X = (60^2)/20 = 180 VAR. For element b, we have a resistance of 5 ohms and a reactance of -10 ohms, so the real power is P = V^2/R = (90^2)/5 = 1620 W and the reactive power is Q = V^2/X = (90^2)/(-10) = -810 VAR.

b) To verify that the average power generated equals the average power absorbed, we need to find the average power for each element and then compare them. The average power is given by P_avg = (1/T)*∫(0 to T) P(t) dt, where T is the period of the waveform. Since both waveforms have a period of 1/40,000 seconds, we can calculate the average power for each element using this formula. For element a, the average power is 0 W since it is an inductor and does not dissipate power. For element b, the average power is P_avg = (1/2)*(1620 W) = 810 W. Therefore, the average power generated by element b equals the average power absorbed by it.

c) To verify that the magnetizing VARs generated equal the magnetizing VARs absorbed, we need to calculate the reactive power associated with the inductor and the capacitor in the circuit. The inductor and capacitor form a resonant circuit, so the reactive power will be continuously exchanged between them. The magnetizing VARs generated by the inductor are Q_L = V_L^2/X_L = (60^2)/(20) = 180 VAR, where X_L is the inductive reactance. The magnetizing VARs absorbed by the capacitor are Q_C = V_C^2/X_C = (90^2)/(10) = 810 VAR, where X_C is the capacitive reactance. Since the magnitudes of these reactive powers are equal and opposite, we can say that the magnetizing VARs generated by the inductor equal the magnetizing VARs absorbed by the capacitor.

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Answer:

A video camera with onboard storage(whether is a tape or digital memory) will record sound

The low-resistance fault causes abnormally high current flow in the circuit and may cause the circuit protection devices, such as fuses or circuit breakers, to open the circuit.

An open circuit fault is any error that prevents a machine from operating because a wire or other component is exposed.

An open circuit is typically brought on by a conductor breaking. If the circuit is not closed and there is a break somewhere in the loop, no current can pass. A circuit becomes open as a result o the above.

Therefore, The low-resistance fault causes abnormally high current flow in the circuit and may cause the circuit protection devices, such as fuses or circuit breakers, to open the circuit.

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Technician A says if the EVAP system is purging vapors from the charcoal canister while the engine is idling, rough engine operation will occur. Technician B says the system should not have more than 0.5 liters of flow during the 240 seconds of an I/M 240 test.

The correct technician is Technician A.EVAP SystemThe EVAP system or Evaporative Emissions Control System is a vital part of modern automotive emission control systems. It prevents the emission of fuel vapors from escaping into the atmosphere. The system collects the vapors produced when the fuel evaporates in the fuel tank and stores them in a charcoal canister. When the engine runs, the system allows the vapors to be drawn into the engine and burned, producing fewer pollutants.

Technician A is correct in saying that if the EVAP system is purging vapors from the charcoal canister while the engine is idling, rough engine operation will occur. This is because the system relies on a tight seal to function correctly. Any leaks in the system will cause it to malfunction, leading to rough engine operation and poor fuel economy. Leaks can also lead to the check engine light illuminating and trigger a diagnostic trouble code (DTC).

Technician B is incorrect in saying that the system should not have more than 0.5 liters of flow during the 240 seconds of an I/M 240 test. The I/M 240 test is a state-mandated emissions test that checks for a vehicle's emissions performance. It is not a measure of the flow rate of the EVAP system. The flow rate of the EVAP system should be tested using a smoke machine to detect leaks in the system. Therefore, technician A is the correct technician.

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As has been said, BIM is a platform - based business simulation that is data-rich.

A provision of the trade agreement between seller and the customer is the delivery term. In the end, the individuals in charge of something like the business's profitability, such as the sales director or buying director, is responsible for choosing the appropriate delivery period.

We have seen that numerous eateries are giving exclusive discounts to their members alone, including free delivery. It's also crucial to understand that most chains now collaborate with food delivery services (like Uber, Doordash and Postmates). These applications also feature their own home delivery promotions.

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Answer:

True

Explanation:

Bambooing is a more severe case of melt fracture in plastic extrusion. The correct option is a.

While both bambooing and melt fracture are caused by viscoelasticity, bambooing is characterized by longer, continuous ridges or "bamboo" patterns on the surface of the extruded plastic, while melt fracture appears as shorter, irregular lines or bands.

Sharkskin, on the other hand, is a surface defect caused by high shear rates during extrusion.

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We have proven that ∇⋅ (∇× a) = ∇× ( ∇ x A ) = 0, ∇× ( ∇φ ) = 0, in rectangular coordinates.

To prove that ∇⋅ (∇× a) = ∇× ( ∇ x A ) = 0, ∇× ( ∇φ ) = 0, we will use rectangular coordinates. We can express the vector a as (x,y,z). We can express the scalar function φ as φ(x,y,z).

The first identity states that ∇⋅ (∇× a) = 0. To prove this, we use the fact that the divergence of a cross product is zero:
∇⋅ (∇× a) = ∇⋅ [∂ay/∂z - ∂az/∂y, ∂az/∂x - ∂ax/∂z, ∂ax/∂y - ∂ay/∂x]
= (∂/∂x)[∂ay/∂z - ∂az/∂y] + (∂/∂y)[∂az/∂x - ∂ax/∂z] + (∂/∂z)[∂ax/∂y - ∂ay/∂x]
= 0 + 0 + 0
= 0

The second identity states that ∇× ( ∇ x A ) = 0. To prove this, we use the fact that the curl of the gradient is zero:

∇× ( ∇ x A ) = [∂/∂y (∂A/∂z) - ∂/∂z (∂A/∂y), ∂/∂z (∂A/∂x) - ∂/∂x (∂A/∂z), ∂/∂x (∂A/∂y) - ∂/∂y (∂A/∂x)]

= 0 + 0 + 0
= 0

The third identity states that ∇× ( ∇φ ) = 0. To prove this, we use the fact that the curl of the gradient is zero:

∇× ( ∇φ ) = [∂/∂y (∂φ/∂z) - ∂/∂z (∂φ/∂y), ∂/∂z (∂φ/∂x) - ∂/∂x (∂φ/∂z), ∂/∂x (∂φ/∂y) - ∂/∂y (∂φ/∂x)]

= 0 + 0 + 0
= 0

Therefore, we have proven that ∇⋅ (∇× a) = ∇× ( ∇ x A ) = 0, ∇× ( ∇φ ) = 0, in rectangular coordinates.

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At amateur operating frequencies, the FTDX10 is designed for 50 Ohm resistive impedance.

Impedance is the sum of resistance and reactance. It was defined as anything that can obstructs the flow of electrons within the electrical circuit. As a result, it influences current generation in the electrical circuit. It could be found in all the possible circuit components and across all possible electrical circuits. Impedance is represented mathematically by the letter Z and has the unit ohm. It's a mix of resistance and reactance.

Z stands for impedance, which is an expression of the resistance to alternating and/or direct electric current that an electronic component, circuit, or system offers. Resistance and reactance are two independent scalar (one-dimensional) phenomena that make up the vector (two-dimensional) quantity known as impedance.

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The height of the national standard counter from the floor to the top of the countertop is 36 inches (91.44 cm).

Even though you might not consider standard counter height on a daily basis, it's an important dimension to consider when organising a renovation.

Kitchen – The standard height of a kitchen counter is 36 inches (3 feet) above the ground. Up to 42 inches can be climbed by kitchen islands intended for bar-style seating.

Bathroom - At 32 inches above the floor, a bathroom countertop is typically slightly lower in height. However, "comfort height" bathroom vanities have gradually increased in height in recent years, reaching a height of 36 inches. This is due to the fact that the original standard was put in place when it was standard for houses to have just one bathroom, and children had to be able to reach the counter.

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The additive that allows the hydraulic fluid to flow more freely at low temperatures is known as a(n) pour point depressant.

A pour point depressant is an additive used in hydraulic fluids to improve their low-temperature flow characteristics. At low temperatures, hydraulic fluids can become more viscous, causing them to flow poorly or even solidify. This can result in reduced performance and potential damage to hydraulic systems.

A pour point depressant is specifically designed to lower the pour point of hydraulic fluids, allowing them to flow more freely at colder temperatures. It works by modifying the wax crystal structure that forms in the fluid as it cools down. By disrupting the formation and growth of these wax crystals, the pour point depressant effectively reduces the viscosity of the hydraulic fluid, enabling it to maintain its fluidity and flowability even in low-temperature conditions.

The use of a pour point depressant is crucial in hydraulic systems that operate in cold environments or during winter months, as it ensures smooth and efficient operation of the system. By preventing the fluid from thickening and maintaining its desired flow characteristics, the pour point depressant helps to optimize the performance and reliability of hydraulic systems in challenging temperature conditions.

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Place a metal paper clip on a table and slowly bring each electromagnet closer to the paper clip to see which can attract the paper clip from a greater distance.(option A)

What is an electromagnet?

A coil surrounding a magnetic core through which an electric current is delivered to magnetize the core is what makes up an electromagnet. Wherever controlled magnets are needed, such as in devices where the magnetic flux needs to be adjusted, reversed, or turned on and off, an electromagnet is utilized.

The magnetic field has also been thought to be completely contained inside the coil. In actuality, the magnetic lines of force that surround the exterior of the coil, which represent the leakage flux, are constantly present and do not add to the core's magnetization.

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The question was incomplete. Check below the full question.

Jaeda designs two electromagnets of different strengths. the first electromagnet has an insulated copper wire wrapped around an iron nail many times before it is connected to a battery. the second electromagnet has its insulated copper wire wrapped around a similar nail a fewer number of times before it is connected to two smaller batteries jaeda tries to determine which electromagnet is stronger by bringing each near a bowl containing eight metal paper clips. she observes that both electromagnets attract all eight of the paper clips how can jaeda demonstrate that each electromagnet has a different strength?

A. Place a metal paper clip on a table and slowly bring each electromagnet closer to the paper clip to see which can attract the paper clip from a greater distance.

B. Determine which electromagnet has its copper wire wrapped around its iron nail a greater number of times.

C. Add plastic paper clips to the bowl and check which electromagnet can attract both kinds of paper clips.

D. Reduce the number of paper clips in the bowl and find which electromagnet attracts more paper clips.

Answer:

b. False

Explanation:

A centimeter is a hundredth of a meter. This means 1/100 ,1 cm = 0.01 m

A kilo is 1000 grams.

The first answer is false because a hundredth isnot written well.

The second statement is false because the comparison given is of different units of measure. For distance is meters where as for weight is kilograms.

Answer:

See detailed explanation and image attached

Explanation:

1 mole of 1-pentanol reacts with 1 mole of benzhydrol

Number of moles in 1.5 g of benzhydrol = mass/molar mass = 1.5 g/184 g/mol = 0.008 moles of benzhydrol

x moles of 1-pentanol reacts with 0.008 moles of benzhydrol

x = 0.008 moles of 1-pentanol

If 1 mole occupies 22.4 L

0.008 moles occupies 22.4 * 0.008 moles = 0.179 L of 1-pentanol is required.

The mechanism of the formation of n-pentyl benzhydryl ether involves the protonation of the -OH group in benzhydrol. This is followed by loss of water molecule creating a carbocation which is attacked by the 1-pentanol.  Abstraction of a proton by a base completes the mechanism, regenerates the acid and yields the n-pentyl benzhydryl ether as shown in the image attached.

The synthesis of diethyl ether occurs by protonation of one ethanol molecule followed by SN2 attack by anothe ethanol molecule and a simultaneous loss of a water molecule. Deprotonation by a base yields the  diethyl ether

Any computing issue that falls within the category of NP-complete problem has yet to find an effective solution algorithm.

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Answer:

123456

Explanation:

Answer:

Option B

Explanation:

Atoms of ferromagnetic materials have north and south pole but these atoms are oriented in random directions due to which they do no exhibit magnetic properties until unless they are brought into influence of any external temporary or permanent magnetic field.

Under the influence of external magnetic force, the atoms of the ferromagnetic material get oriented in a particular direction.

Hence, option B is correct

Answer:

See explanation.

Explanation:

Since no figure was given I solved a problem that was similar to the one you described that I worked in my mechanics of materials class. The method should be very similar for your figure. See attached image for my work.

If it is subjected to the couple determine the maximum shear stress in regions AC and CB of the shaft. G st = 75 GPa. Than the answer will be 52Mpa.

We need to perform a two step process to obtain the maximum shear stress on the shaft. For the solid shaft,

P=2×pi×N×T/60 or T=60×p/2×pi×N

Where P=power transmitted by the shaft=50×10³W

N=rotation speed of the shaft in rpm=730rpm

Pi=3.142

T is the twisting moment

By substituting the values for pi, N and P, we get

T=654Nm or 654×10³Nmm

Also, T=pi×rho×d³/16 or rho=16×T/pi×d³

Where rho=maximum shear stress

T = twisting moment=654×10³Nmm

d= diameter of shaft= 40mm

By substituting T, pi and d

Rho=52Mpa

b. For a hollow shaft, the value for rho is unknown

T=pi×rho(do⁴-di⁴/do)/16

Rho=T×16×do/pi×(do⁴-di⁴)

Where

T= twisting moment=654×10³Nmm gotten above

do=outside shaft diawter=40mm

di= inside shaft diameter =30mm

Pi=3.142

Substituting values for pi, do, di and T.

Rho=76Mpa

Therefore, If it is subjected to the couple determine the maximum shear stress in regions AC and CB of the shaft. G st = 75 GPa. Than the answer will be 52Mpa.

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The precursor to modern operating systems that allowed programs to be processed without human interaction is B) batch processor.

A batch processor is a system that processes a collection of jobs or programs in a sequential manner, without requiring constant human intervention. It allows multiple programs or jobs to be submitted for execution as a batch, and the system automatically executes them one after another without the need for manual intervention between jobs.

In a batch processing environment, programs are typically stored on punched cards, magnetic tapes, or other storage media. The batch processor reads the programs and data from the storage media, executes the programs, and produces the desired output. This process continues until all the jobs in the batch have been processed.

Batch processing was a significant advancement in the early days of computing when computers were primarily used for scientific and business applications. It allowed programs to be executed without the need for constant human attention, thereby improving efficiency and productivity.

Resident monitor (A) refers to a portion of the operating system that remains in memory at all times and provides basic system services. Middleware (C) refers to software that acts as an intermediary between different applications or systems, facilitating communication and data exchange. Spooling (D) stands for "Simultaneous Peripheral Operation On-Line" and refers to a technique used to improve input/output performance by storing data in a buffer before it is processed.

Among the given options, batch processor (B) is the best choice as the precursor to modern operating systems that enabled automated, non-interactive processing of programs.

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