Answer:
Typically, either 110-volt AC (110V) or 220-volt AC (220V) is used. Most countries use 50Hz (50 Hertz or 50 cycles per second) as their AC frequency. Only a handful use 60Hz. The standard in the United States is 120V and 60Hz AC electricity.
Consider filling a cylinder of compressed argon from a high- pressure supply line as shown below. Before filling, the cylinder contains 10 bar of argon at room temperature. The valve is then opened, exposing the tank to a 50 bar line at room temperature un- til the pressure of the cylinder reaches 50 bar. The valve is then closed. For argon take cP = (5/2)R and the molecular weight to be 40 g mol. You may use the ideal gas model. (a) What is the temperature right after the valve is closed? (b) If the cylinder sits in storage for a long time, how much heat is transferred (in kJ/kg)? (c) What is the pressure of the cylinder when it is shipped (after it was stored for a long time)?
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
How can the temperature, heat transferred and pressure be calculated?(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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Bernice has a string of lights decorating her room. One of the bulbs burns out, but the rest of the lights in the chain function normally. What kind of circuit is the light string using?
A. series
B. parallel
C. redundant
D. analog
Mr. and Ms. Boren have two children, John and Jane. When eating out they will go to a restaurant that serves only hamburgers or one that serves only chicken. Before going out, the family votes to decide on the restaurant. The majority wins, except when Mom and Dad agree, and in that case, they win. Any other tie votes produce a trip to the chicken restaurant.
Required:
Design a logic circuit that will automatically select the restaurant when everyone votes.
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).
Compare and contrast mechanical properties of plastics, metals and ceramics.
Answer:
free badge
Explanation:
1. Define the following terms.
a. Composition
b. Synthesis
c. Microstructure
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!
What’s the most important reason we should need a mask? Is the ban on removal of the mask requirement being implemented too fast in an area without general consensus (moral, political, cultural, technological)?
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.
Hope it helps!!!!!brainliest pls!!!!!!!!!In a series circuit, resistance is the simple _____ of all resistors in the circuit.
A. sum
B. difference
C. average
D. product
Describe the second case where the power of synthesis was used to solve design problems.
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
1. write a C++ program that adds the numbers should be void, and takes a third, pass by reference parameter,then puts the sum in that.
2. write a program that asks a name say hello, use your own function that recives a string of characters (name) and print on screen the hello message.(doesn't return anything void type)
The C++ programs are illustrations of functions and function reference by parameter
What are functions?Functions are collections of program statements that are executed when called or evoked
How to pass value to a function by reference parameterTo pass value to a function by reference parameter, we make use of the &variable in the function parameters
The C++ program by reference parameterThe 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 name programThe 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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what is the law of physics
10 points if you tell me the answer and your name
[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
G A wheel-tractor scraper is operating on a level grade. Assume no power derating is required for equipment condition, altitude, temperature, and so on. Disregarding traction limitations, what is the maximum value of rolling resistance (in pounds per ton) over which a loaded scraper can maintain a speed of 11 mph
The maximum value of rolling resistance over which a loaded scraper can maintain in a speed of 11 mph is 275 lb/ton
What is a maximum rolling resistance?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;
For 11 mph speed, the required total resistance is ≅ 25%Grade resistance = 0%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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in fort a shied pot is 50
Definition of Assessment (ddp question)
Answer:
An assessment is the evaluation or estimation of the nature, quality, or ability of someone or something.
i need the solution
Answer:
Isn't the answer written upside down in the sentence?
Explanation:
1. Compare the following Software, surpac and datamine
Answer:
Discover GEOVIA Surpac, the world´s most popular geology and mine planning software.
logo
Micromine
Intuitive Mining Solutions Micromine 2020: Optimising underground mine planning The launch of MICROMINE’s latest version of leading exploration and 3D mine design solution, Micromine 2020 will see the introduction of new stope optimisation functiona…
PLS HELP ME
Caterpillars eat the milkweed plant. The milkweed plant is a weed that takes over other plants. Based on these two things, are milkweed plants helpful or harmful to the environment?
Helpful
Harmful
Both helpful and harmful
Neither helpful nor harmful ITS Science
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.
What are Milkweed Plants?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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Tech A says that potentiometer type sensors use a variable resistance to create a variable
voltage signal that corresponds to a specific condition. Tech B says that oxygen sensors are
the potentiometer type. Who is correct?
Tech A is correct because potentiometer type sensors use a variable resistance to create a variable voltage signal that corresponds to a specific condition.
What is a potentiometer?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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pretend you had to return the files to the client-what would you write in order to support your submitted filest?
A specialist graphics company is investing in a new machine which enables it to make high-quality prints for its clients. Demand for these prints is forecast to be around 100,000 units in first year and 220,000 units in second year. The fixed cost of purchasing a machine is €200.000 and
maximum printing capacity of a machine 100.000 unit per year. The variable cost of printing is
€1 per unit. The company believes they will be able to charge €4 per unit for producing the prints.
What profit are they likely to make in the first and second years?
The profit that will be made for the first and second years will be $100,000 and $460,000.
How to calculate the profit?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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What are some advantages of making electronic components like transistors increasingly smaller? (40 POINTS) Pls help
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.
What is an example of a product made of textile?
A. kitchen floor
B. beach towel
C. basketball
D. bathroom mirror
[tex]beach \: towel \\ \\ hope \: it \: helps[/tex]
Which of the following is not a relationship set between elements in a sketch
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.
Write a Nios II assembly program that reads binary data from the Slider Switches, SW11-0, on the DE2-115 Simulator, and display the decimal equivalent on the seven-segment displays HEX3-0.
Algorithm of the Nios II assembly program.
Attain data for simulation from the SW11-0, on the DE2-115 Simulator The data will be read from the switches in loop.The decimal output is displayed using the seven-segment displays and done using the loop.The program is ended by the user operating the SW1 switchand
The decimal equivalent on the seven-segment displays HEX3-0 is
DE2-115DE2-115_SW11DE2-115_HEX3DE2-115_HEX4DE2-115_HEX5DE2-115_HEX6DE2-115_HEX7The Algorithm and decimal equivalent on the seven-segment displays HEX3-0Generally, the program will be written using a cpulator simulator in order to attain best result.
We are to
Attain data for simulation from the SW11-0, on the DE2-115 Simulator The data will be read from the switches in loop.The decimal output is displayed using the seven-segment displays and done using the loop.The program is ended by the user operating the SW1 switchThis will be the Algorithm of the Nios II assembly program .
Hence, the decimal equivalent on the seven-segment displays HEX3-0 is
DE2-115DE2-115_SW11DE2-115_HEX3DE2-115_HEX4DE2-115_HEX5DE2-115_HEX6DE2-115_HEX7For more information on Algorithm
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three identical lamps A,Band C are connected in series across 150V supply.What is the voltage across each lamp
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.
What are two ways you can see that there is a smaller load going to the base of the transistor?
Answer:
Transistor switches can be used to switch a low voltage DC device (e.g. LED’s) ON or OFF by using a transistor in its saturated or cut-off state. Cut-off RegionHere 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
There are two identical oil tanks. The level of oil in Tank A is 12 ft and is drained at the rate of 0.5 ft/min. Tank B contains 8 ft of oil and is drained at the rate of 0.25 ft/min. After how many minutes will the level of oil in the two tanks be the same?
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.
In which of the following switching methods, the message is divided into small packets?
None of the these
Virtual switching
Message switching
Packet switching
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.
What is the switching method?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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On a 'wear indicator type ball Joint, what does it mean when the grease fitting boss is flush with the base?
OA. The ball Joint requires lubrication
OB. The ball joint should be replaced
OC. The steering knuckle has loosened from the ball Joint
OD. Nothing, this is how they are when new
For a wear indicator type ball joint, when the grease fitting boss is flush with the base: B. The ball joint should be replaced.
What is a wear indicator?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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Assess the consequences if not applying to CAO for your studies in advance
Some of the consequences of not applying to Central Applications Office (CAO) in advance include the following:
A payment of 60 Euros (€60) for late online applications.A payment of 90 Euros (€90) for late paper applications.You may miss out on admission to a higher institution.What is CAO?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:
A payment of 60 Euros (€60) for late online applications.A payment of 90 Euros (€90) for late paper applications.You may miss out on admission to a higher institution.Read more on CAO here: https://brainly.com/question/2919700
Having a bluish or black color of the material means it is ___________ so dip it in the water to cool down
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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