A 3 mm diameter and 5 m long electric wire is tightly wrapped with a 2 mm thick plastic cover whose thermal conductivity is k= 0.15 W/m°C. Electrical measurements indicates that a current of 10A and voltage drop of 8V along the wire. If the insulated wire is exposed to a medium at T∞= 30C with h= 12 W/m2°C, determine the temperature at the interface of the wire and the plastic cover in steady operation. Also, determine whether doubling the thickness of the plastic cover will increase or decrease this interface temperature.

Answer:

Here the operating conditions of the transistor are zero input base current ( IB ), zero output collector current ( IC ) and maximum collector voltage ( VCE ) which results in a large depletion layer and no current flowing through the device. Therefore the transistor is switched “Fully-OFF”.

2.Saturation Region

Here the transistor will be biased so that the maximum amount of base current is applied, resulting in maximum collector current resulting in the minimum collector emitter voltage drop which results in the depletion layer being as small as possible and maximum current flowing through the transistor. Therefore the transistor is switched “Fully-ON”.

Explanation:

hope it helps

[tex]f = force[/tex]

[tex]m = mass \: of \: an \: object[/tex]

[tex]a = acceleration[/tex]

Newton's second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation

Tech A is correct because potentiometer type sensors use a variable resistance to create a variable voltage signal that corresponds to a specific condition.

Potentiometer are variable resistors and passive device that can perform basic linear or rotary position function.

The potentiometer is a resistive device that uses voltage divider to produce a variable voltage output signal which is proportional to the physical position as a result of a specific condition.

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The initial pressure in the cylinder of 10 bar of argon with [tex]C_p[/tex] = (5/2)·R

and the added gas at pressure of 50 bar gives the following values.

(a) 400.6 K

(b) 51.184 J

(c) The pressure of the cylinder when it is shipped is 37.194 bar

(a) Adiabatic compression, we have;

[tex]\dfrac{p_{1}}{p_{2}} = \mathbf{\left (\dfrac{T_{_{1}}}{T_{2}} \right )^{\dfrac{k}{k-1}}}[/tex]

Where;

[tex]k = \dfrac{C_p}{C_v} = \mathbf{\dfrac{C_p}{C_p - R}}[/tex]

Therefore;

[tex]K= \mathbf{\dfrac{\frac{5}{2} \cdot R}{\frac{5}{2} \cdot R - R} }= \dfrac{5}{3}[/tex]

Which gives;

[tex]\dfrac{10}{50} = \left (\dfrac{298}{T_{2}} \right )^{\dfrac{\frac{5}{3} }{\frac{5}{3} -1}} = \left (\dfrac{298}{T_{2}} \right )^{2.5}[/tex]

[tex]\dfrac{50}{10} = \mathbf{ \left (\dfrac{T_2}{298.15} \right )^{2.5}}[/tex]

[tex]ln(5)= 2.5\cdot ln\left (\dfrac{T_2}{298.15} \right )[/tex]

[tex]T_2 = 298 \times e^{\dfrac{ln(5)}{2.5} } \approx \mathbf{567.29\, K}[/tex]

The temperature

Using an ideal gas model, we have;

[tex]\dfrac{V_{1}}{V_{2}} = \mathbf{\dfrac{P_{2}\times T_{1}}{T_{2} \times P_1}}[/tex]

Which gives;

[tex]\dfrac{V_{1}}{V_{2}} = \dfrac{50\times 298}{567.29 \times 10} \approx 2.625[/tex]

V₁ = 2.625·V₂

Volume occupied by the gas in the cylinder after the pressure increases is therefore;

[tex]V_2 = \dfrac{V_1}{2.625} \approx 0.381 \cdot V_1[/tex]

Volume of gas added is therefore;

[tex]V =V_1 - \dfrac{V_1}{2.625} = 0.619\cdot V_1[/tex]

Considering a molar volume of gas, we have;

0.040 × 0.619 × 2.5×8.3145×(T₃ - 298) = 0.040 × 0.381 × 2.5×8.3145×(567.29 - T₃)

Solving gives;

T₃ ≈ 400.6 K

For a molar volume of gas cylinder, the temperature just after the valve is closed is T₃ ≈ 400.6 K

(b) If the cylinder sits in the storage for a long time, and heat is conducted out, we have;

The temperature of the cylinder will revert to room temperature of 298 K

The heat transferred is therefore;

0.040 × (2.5 × 8.3145 - 8.3145) ×(400.6 - 298) ≈ 51.184

The heat transferred from the cylinder is 51.184 J

(c) The pressure of the gas in the cylinder is therefore;

[tex]\dfrac{P_1}{T_1} = \mathbf{\dfrac{P_2}{T_2}}[/tex]

Which gives;

[tex]P_2= \mathbf{\dfrac{P_1}{T_1} \times T_2}[/tex]

Therefore;

[tex]P_2= \dfrac{50}{400.6} \times 298 \approx 37.194[/tex]

The pressure of the cylinder when it is shipped is 37.194 bar

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The profit that will be made for the first and second years will be $100,000 and $460,000.

The profit of the graphics company for the first year will be:

= 4(100000) - [200000 + 100000]

= 400000 - 300000

= 100000

The profit for the second year will be:

= 4(220000) - (200000 + 220000)

= 880000 - 420000

= 460000

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Answer:

free badge

Explanation:

Some of the consequences of not applying to Central Applications Office (CAO) in advance include the following:

CAO is an abbreviation for Central Applications Office and it can be defined as an academic organization that is saddled with the responsibility of overseeing, managing, and processing undergraduate applications to colleges and universities in the Republic of Ireland.

Historically, the Central Applications Office (CAO) was established in 1976 and its primary mission is to centrally process undergraduate applications to Irish Higher Education Institutions (HEIs) such as colleges and universities, especially in a fair and efficient manner.

Although, it is essential and important for students to submit their applications to the Central Applications Office (CAO) in advance.

In conclusion, some of the consequences of not applying to Central Applications Office (CAO) in advance include the following:

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Answer:

What’s the most important reason we should need a mask?

we were because it protects us from germs and viruses.

Is the ban on removal of the mask requirement being implemented too fast in an area without general consensus (moral, political, cultural, technological)?

Face coverings limit the volume and travel distance of expiratory droplets dispersed when talking, breathing, and coughing.

Algorithm of the Nios II assembly program.

and

The decimal equivalent on the seven-segment displays HEX3-0 is

Generally,  the program will be written using a  cpulator simulator in order to attain best result.

We are to

This will be the Algorithm of the Nios II assembly program .

Hence, the decimal equivalent on the seven-segment displays HEX3-0 is

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Explanation:

The logic is captured in the Karnaugh map of the first attachment. M and D refer to Mom and Dad, respectively, and A and B refer to the children. A logic 1 is a vote for Chicken, 0 is a vote for Hamburger.

The logic in attachment 2 shows an implementation using And and Or gates. The effective equation is ...

  chicken = (m·d) + (m+d)·(a+b)

The logic in attachment 3 shows an implementation using an 8-input selector. The dots at the inputs represent inversion, so those inputs to the selector represent a logic 1 (chicken).

Answer:

An assessment is the evaluation or estimation of the nature, quality, or ability of someone or something.

[tex]beach \: towel \\ \\ hope \: it \: helps[/tex]

Answer:

Message packet

Explanation:

The ans is message packet

The correct option is D. Packet switching​ is a method of switching in which the message is divided into small packets.

The message is broken into smaller pieces when using packet switching. Each of these discrete components of the communication, known as packets, has a unique source and destination address. Only based on these addresses is each packet sent forward through the network.

The method through which nodes control or switch data to send it between particular places on a network is known as switching. There are three typical switching methods: Switching a circuit. Switching of packets. Switching messages.

Small data packets are sent between different networks using packet switching. These data "packets" or "chunks" enable quicker, more effective data transport. When a user transfers a file over a network, it frequently travels in smaller data packets rather than all at once.

Thus, the correct option is represented by option D. In the packet switching method the message is divided into small packets.

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The maximum value of rolling resistance over which a loaded scraper can maintain in a speed of 11 mph is 275 lb/ton

The maximum rolling resistance is the maximum rolling friction that can cause the motion of a body or a substance to resist the force when rolled on a flat surface.

Using Rimpull Performance Chart for wheel-tractor scraper;

The total resistance = (gross+rolling) resistance

25% = 0% - rolling resistance

rolling resistance = 25%

The maximum rolling resistance = rolling resistance percentage × speed

The maximum rolling resistance [tex]\mathbf{=25\% ( \dfrac{11 \ lb/ton}{1 \% \ resistance})}[/tex]

The maximum rolling resistance = 275 lb/ton

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Answer:

The entity relationship (ER) data model has existed for over 35 years. It is well suited to data modelling for use with databases because it is fairly abstract and is easy to discuss and explain. ER models are readily translated to relations. ER models, also called an ER schema, are represented by ER diagrams.

Answer:

  16 minutes

Explanation:

This is an example of a class of problems in which two quantities start with different initial values and change at different rates. In such problems, the rates of change are generally ones that cause the values to converge.

The question usually asks when the values will be the same. The generic answer is, "when the difference in rates makes up the difference in initial values."

Here the tanks differ in initial fill height by 12 -8 = 4 ft. The rates of change differ by 0.5 -0.25 = 0.25 ft/min. The more filled tank is draining faster (important), so the fill heights will converge after ...

  (4 ft)/(0.25 ft/min) = 16 min

The level in the two tanks will be the same after 16 minutes.

__

Additional comment

The oil levels at that time will be 4 ft.

You can write two equations for height:

  y = 12 -0.5x . . . . . . . height in feet after x minutes (tank A)

  y = 8 -0.25x . . . . . .  height in feet after x minutes (tank B)

These will be equal when ...

  y = y

  12 -0.5x = 8 -0.25x

  4 = 0.25x . . . . . . . . . . add 0.5x -8

  16 = x . . . . . . . . . . . . multiply by 4 . . . . time to equal height

The graph shows when the tanks will have equal heights and when they will be drained.

Explanation:

I am sorry. I don't understand too :/ I haven't learn engineering before- But if I'm not wrong, if something is black, probably it's burnt? Because you have to dip it in the water to cool down.

For example, if a steel is burnt, it will change color like blue.

So the answer is "burnt".

Having a bluish or black color of the material means it is burnt so dip it in the water to cool down

hipe answer is correct

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Answer:

50 V

Explanation:

If A, B, and C are identical, so we assume that all of the lamps have same resistance R. So, the voltage for each lamp is easy to calculate:

[tex]V=3V_{A}\rightarrow 150 = 3V_{A} \rightarrow V_{A}=50[/tex] volts

[tex]V_{A}[/tex] indicates the voltage of each lamp.

Answer:

composition: the action of putting things together; formation or construction. Alternatively, a creative work, especially a poem or piece of music. Or, in chemistry terms, the chemical composition of engineering material indicates the elements which are combined together to form that material.

synthesis: the combination of components or elements to form a connected whole. Often contrasted with analysis.

microstructure: Microstructure is the very small scale structure of a material,  which can be made visible and examined with a microscope.

Explanation:

If you need further explanation, let me know!

Answer:

Both helpful and harmful

Explanation:

The milkweed plant is helpful, because it is the host pant for monarch butterflies and helps provide nectar and pollen for many other pollinators.

It is harmful for many reasons, including it's toxic, poisonous, it produces a type of steroid that is able to stop the heart, and they cause many other sicknesses.

Based on the two things above, milkweed plants are both helpful and harmful to the environment.

It is helpful because the milkweed plants acts as source of food for the caterpillar while it is harmful because it kills other plants around it.

This plant is known to belong to the genus  of herbaceous plant. It is called Asclepias as it is a perennial, flowering plants.

It is said to derive its name from latex, that is a milky substance that comes out of it when cells are damaged. monarch caterpillars needs to eat milkweed so that they can survive.

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For a wear indicator type ball joint, when the grease fitting boss is flush with the base: B. The ball joint should be replaced.

A wear indicator can be defined as a type of technology that is designed to alert and warn a car owner or driver that the car's brake pad is needs a replacement.

Generally, a wear indicator is designed and fitted with a small boss. Thus, this small boss would continuously recede into its housing as wear occurs. However, when it recedes into the cover plate or flush with the base, it simply means that the ball joint should be replaced.

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it makes it so that its much easier to have these objects around,like how when you wear the translator its much more simple,and instant.

Answer:

Discover GEOVIA Surpac, the world´s most popular geology and mine planning software.

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Micromine

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Answer:

Isn't the answer written upside down in the sentence?

Explanation:

The C++ programs are illustrations of functions and function reference by parameter

Functions are collections of program statements that are executed when called or evoked

To pass value to a function by reference parameter, we make use of the &variable in the function parameters

The program written in C++ where comments are used to explain each action is as follows:

#include <iostream>

using namespace std;

//This defines the function

void addNums(int &x, int &y) {

   //This adds the two numbers

   int sum = x + y;

   //This saves the sum of the two numbers in the first number

   x = z;

}

//Ths main module begins here

int main() {

   //This declares the two numbers

   int firstNum, secondNum;

   //This gets input for the two numbers

   cin>>firstNum;    cin>>secondNum;

   //This calls the addNums function

   addNums(firstNum, secondNum);

   //This prints the sum

   cout << firstNum;

 return 0;

}

The program written in C++ where comments are used to explain each action is as follows:

#include <iostream>

using namespace std;

//This defines the function

void printName(string name) {

   //This prints the name

   cout<<"Hello "<<name;

}

//Ths main module begins here

int main() {

   //This declares the name

   string name;

   //This gets input for the name

   cin>>name;

   //This calls the printName function

   printName(name);

 return 0;

}

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Answer:

The second case where the power of synthesis was used to solve design problems in the sense that they had to create a new office building that saves

Explanation:

The first case where the power of synthesis was applied was in Chile when they had to put 100 families in houses around 40m²