A heat engine operates with a heat source maintained at 900 K and delivers 550 W of net mechanical power while rejecting heat at a rate of 450 W to the environment whose temperature is 300 K.
a) Using the entropy increase principle, determine if the heat engine is a Carnot heat engine.
b) Suppose the net mechanical power is used to power a completely reversible heat pump operating between the temperatures of 265 K and 300 K. What would be net rate of entropy change for the heat source and sink of the refrigerator?
Answers
Part(a),
The Clausius inequality is not satisfied and the heat engine is not a Carnot heat engine.
Part(b),
The net rate of the entropy change for the heat source and sink of the refrigerator is 0.377 W/K for both.
How to calculate the entropy?a) To determine if the heat engine is a Carnot heat engine, we can use the Clausius inequality, which states that for a cyclic process,
∮ dQ/T ≤ 0
where ∮ represents a closed cycle and dQ/T is the infinitesimal amount of heat transferred divided by the temperature at which it is transferred.
For a Carnot heat engine, the equality holds, i.e., ∮ dQ/T = 0. This means that the net change in entropy over a complete cycle of the engine is zero.
We know that the heat engine delivers 550 W of net mechanical power and rejects 450 W of heat to the environment. Therefore, the rate of heat absorbed by the engine from the heat source is 1000 W (550 + 450). The temperatures of the heat source and sink are 900 K and 300 K, respectively.
Using the entropy increase principle, we can calculate the entropy change of the heat source and sink as:
\(\Delta S_{hot} = \dfrac{Q_{hot}}{T_{hot}} = \dfrac{(1000 W)}{(900 K) }= 1.11 \dfrac{W}{K}\)
\(\Delat S_{cold} = \dfrac{Q_{cold}}{T_{cold}} = \dfrac{(-450 W)}{(300 K)} = -1.5 \dfrac{W}{K}\)
The net change in entropy over a complete cycle of the engine is given by:
\(\Delta S_{cycle} = \Delta S_{hot} + \Delta S_{cold} = 1.11 - 1.5 = -0.39 \dfrac{W}{K}\)
Since ΔS_cycle is negative, the Clausius inequality is not satisfied and the heat engine is not a Carnot heat engine.
b) The net rate of entropy change for the heat source and sink of the refrigerator can be calculated using the formula:
ΔS = Q/T
where Q is the heat transferred and T is the temperature at which it is transferred.
For the reversible heat pump, the net rate of heat absorbed from the low-temperature reservoir (the heat sink) is equal to the net rate of heat rejected to the high-temperature reservoir (the heat source). Therefore, we can calculate the entropy change for the heat sink and source separately.
The net rate of heat absorbed by the heat pump from the low-temperature reservoir (at 265 K) is:
\(Q_{cold} = W_{net} + Q_{hot} = \dfrac{550}{1} - 450 = 100 W\)
The net rate of heat rejected by the heat pump to the high-temperature reservoir (at 300 K) is:
\(Q_{hot} = Q_{cold}\times \dfrac{T_{hot}}{T_{cold}} = 100\times \dfrac{300}{265} = 113.21 W\)
The entropy change for the heat sink (at 265 K) is:
\(\Delta S_{cold} = \dfrac{Q_{cold}}{T_{cold}} = \dfrac{100 W}{265 K} = 0.377 \dfrac{W}{K}\)
The entropy change for the heat source (at 300 K) is:
\(\Delta S_{hot} = \dfrac{Q_{hot}}{T_{hot}} = \dfrac{(113.21 W)}{(300 K)} = 0.377 \dfrac{W}{K}\)
Therefore, the net rate of the entropy change for the heat source and sink of the refrigerator is 0.377 W/K for both.
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Related Questions
i gave 15 min to finish this java program
Answers
Answer:
class TriangleNumbers
{
public static void main (String[] args)
{
for (int number = 1; number <= 10; ++number) {
int sum = 1;
System.out.print("1");
for (int summed = 2; summed <= number; ++summed) {
sum += summed;
System.out.print(" + " + Integer.toString(summed));
}
System.out.print(" = " + Integer.toString(sum) + '\n');
}
}
}
Explanation:
We need to run the code for each of the 10 lines. Each time we sum numbers from 1 to n. We start with 1, then add numbers from 2 to n (and print the operation). At the end, we always print the equals sign, the sum and a newline character.
Ferroconcrete is reinforced concrete that combines concrete and ________. A. Lead c. Copper b. Iron d. Aluminum.
Answers
Answer:
B. Iron
Explanation:
took the test.
Advise a suitable structural form for the 50-storey residential
towers to resist strong lateral wind load.
Answers
A suitable structural form for the 50-storey residential towers to resist strong lateral wind loads is a reinforced concrete shear wall system. This system involves the use of vertical concrete walls distributed throughout the building's floor plan. These walls act as the primary structural elements that resist the lateral forces generated by strong winds.
The reinforced concrete shear wall system offers several advantages in terms of lateral stability and wind load resistance. The vertical walls provide stiffness and strength to counteract the lateral forces, effectively reducing the building's sway and minimizing the potential for structural damage. The system also offers good structural integrity, durability, and fire resistance.
In addition to the shear walls, other complementary structural elements such as floor diaphragms, columns, and foundation systems are incorporated to ensure overall stability and load distribution. Proper structural analysis and design, including consideration of wind load effects and local building codes, are crucial to ensure the towers can withstand the anticipated wind forces.
It is important to note that structural design considerations should involve the expertise of professional structural engineers who will assess the specific site conditions, wind loads, and architectural requirements to determine the most appropriate structural form for the 50-storey residential towers.
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For laminar flow of air over a flat plate that has a uniform surface temperature, the curve that most closely describes the variation of the local heat transfer coefficient with position along the plate is
Answers
This question is incomplete, the missing diagram is uploaded along this answer below;
Answer:
from the diagram, the curve that most closely describes the variation of the local heat transfer coefficient with position along the plate is Option D
Explanation:
Given the data in the question;
We write the expression for the local Nusselt number for Laminar flow over the flat plate;
Nu = \(C\)\((Re_x)^{0.5\) \((Pr)^{1/3\)
Nu = \(C(\frac{Vx}{v})^{0.5}\) \((Pr)^{1/3\)
\(\frac{h_xx}{k}\) = \(C(\frac{V}{v})^{0.5}\) \((Pr)^{1/3\) \((x)^{0.5\)
\(h_x\) = \(\frac{1}{x^{1/2}}\)
Next we write down the expression for the local heat flux from the plate with uniform surface temperature;
q = \(h_xA(\) T\(_s\) - T∞ )
q ∝ \(h_x\)
∴
q ∝ \(\frac{1}{x^{1/2}}\)
The local heat flux decreases with the position as it is inversely proportional to the square root of the position from the leading edge and it will not be zero at the end of the plate.
Therefore, from the diagram, the curve that most closely describes the variation of the local heat transfer coefficient with position along the plate is Option D
thì nghiệm nén xác định cường độ của bê tông trên ba mẫu thí nghiệm hình trụ HxD=300x150(mm). kết quả thu được lực phá hoại P1=45200daN, P2=46800daN, P3=46000daN. hãy xác định cường độ chịu nén của bê tông theo TCNV 3118:1993
Answers
spanish
Explanation:
the above question is written in spanish
how should you use the predict step of the ipde process while driving on city streets?
Answers
Answer:
By predicting possible points of conflict early
Explanation:
You should use the predict step of the IPDE process while driving on city streets by predicting possible points of conflict early. An advantage of keeping a 3 second following distance in city traffic is that you have a cushion from the vehicle in front of you. What do you do when you apply the IPDE process?
While driving on city streets, the predict stage of the IPDE process, Prepare yourself by anticipating potential points of contention beforehand.
The letters IPDE stand for "Identify, Predict, Decide, and Execute." This is how defensive driving principles and the difficulties of visual perception in traffic are put into practice step-by-step. Our daily routines include driving so frequently that we frequently fall asleep behind the wheel. IPDE mandates that when operating a vehicle, the driver use a strategic approach to action. Within the driving environment, I—Identify—Locate probable risks.
The driver should do a thorough inspection of the immediate environment for potential impediments and deteriorating weather conditions as the first element of the IDPE process. To preserve safety, it's essential to recognize potential threats, which can range from advancing bikers to a stopped car parked curbside.
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we want to specify an rc3 class fit for the illustrated hole and shaft. what is the minimum allowable diameter of the hole if its basic size is 1.25 inches?
Answers
The basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches
How to specify an RC3?To specify an RC3 fit for the illustrated hole and shaft, we need to determine the minimum allowable diameter of the hole.
First, we need to know the limits of the hole and shaft sizes for an RC3 fit.
According to ANSI B4.1 standard for fits and tolerances, the basic size of the shaft is 1.25 inches and the tolerance class is H11.
The basic size of the hole for an RC3 fit is determined by adding a certain amount of allowance to the basic size of the shaft.
The allowance is calculated based on the fit type, the shaft tolerance class, and the hole tolerance class. For an RC3 fit, the allowance is 0.0015 inches.
Therefore, the basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches. This is the minimum allowable diameter of the hole for the specified fit.
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create a program in C++ based on the following.
double avg(int sum, int count) // returns the average of a sum of count numbers
void avg(int sum, int count, double& average) // modifies average with the average of a sum of count numbers
bool isOdd(int value) // returns true if value is odd, false if it is not
bool isSame(int firstNum, int secondNum, int thirdNum, int compareNum) // returns true if compareNum is the same as firstNum, secondNum, OR thirdNum - this function calls the isSame function defined below
bool isSame(int number, int compareNum) // returns true if number is the same as compareNum
Answers
A program in C++ that implements the given functions:
#include <iostream>
double avg(int sum, int count) {
return static_cast<double>(sum) / count;
}
void avg(int sum, int count, double& average) {
average = static_cast<double>(sum) / count;
}
bool isOdd(int value) {
return value % 2 != 0;
}
bool isSame(int firstNum, int secondNum, int thirdNum, int compareNum) {
return isSame(compareNum, firstNum) || isSame(compareNum, secondNum) || isSame(compareNum, thirdNum);
}
bool isSame(int number, int compareNum) {
return number == compareNum;
}
int main() {
int sum = 15;
int count = 5;
double average = 0.0;
// Using the avg() function to calculate the average
double calculatedAverage = avg(sum, count);
std::cout << "Average (calculated): " << calculatedAverage << std::endl;
// Using the avg() function to modify the average variable
avg(sum, count, average);
std::cout << "Average (modified): " << average << std::endl;
int value = 7;
// Checking if the value is odd
bool isOddValue = isOdd(value);
std::cout << "Is " << value << " odd? " << (isOddValue ? "Yes" : "No") << std::endl;
int firstNum = 10;
int secondNum = 15;
int thirdNum = 20;
int compareNum = 15;
// Checking if compareNum is the same as any of the three numbers
bool isSameNum = isSame(firstNum, secondNum, thirdNum, compareNum);
std::cout << "Is " << compareNum << " the same as any of the three numbers? " << (isSameNum ? "Yes" : "No") << std::endl;
// Checking if two numbers are the same
bool isSameValue = isSame(25, 25);
std::cout << "Are the two numbers the same? " << (isSameValue ? "Yes" : "No") << std::endl;
return 0;
}
The program starts by including the necessary headers and defining the functions avg(), isOdd(), and isSame(). The avg() function is overloaded to accept two different types of parameters: (int sum, int count) to return the average as a double, and (int sum, int count, double& average) to modify the average variable directly.
The isOdd() function checks if a given value is odd by checking if the remainder of the value divided by 2 is non-zero.
The isSame() function is overloaded to compare either a single number with another number or multiple numbers with a compare number. The latter calls the former function to perform the individual comparisons.
In the main() function, example usage of each function is demonstrated. It calculates and displays the average using both forms of the avg() function, checks if a value is odd using isOdd(), and checks if numbers are the same using isSame().
Finally, the program prints the results on the console.
You can compile and run this program in a C++ compiler to see the output for the provided sample inputs.
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Determine the pump operation point in terms of head and discharge, operation efficiency, “goodness of fit” of the pump(See Table 1 for pump data), and the horsepower needed for the pump for the system in Figure 2. Assume a friction factor f=0.021 and C= 120 for the pipe. Develop the system curve for the Hazen Williams equation .
Answers
Flow rate from Tank 1 to Pump, Q_1 = 70.6 GPM head loss from tank 1 to pump, h_1 = 73.8 ft, Flow rate from Pump to Tank 2 ,Q_2 = 108.4 GPM, head loss from pump to tank 2, h_2 = 45.4 ft and Total head loss = 119.2 ft.
What is the calculation and what is flow rate?We can calculate the system head for different flow rates using the Hazen Williams equation.
The flowrate is the speed at which fluid in a pipe moves, or the speed at which it moves from a reservoir into a wellbore.
The explanation is given in the images attached below:
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A gas has an initial volume o.25m^3, and absolute pressure 100kPa. Its initial temperature is 290k. The gas is compressed into a volume of o.O5m^3 during which its temperature rises to 405k. Calculate its final pressure using the formula . P1V1/T1=p2V2/t2
Answers
Answer:
698.3KpaExplanation:
Step one:
given data
V1=0.25m^3
T1=290k
P1=100kPa
V2=0.5m^2
T2=405k
P2=? final pressure
Step two:
The combined gas equation is given as
P1V1/T1=P2V2/T2
Substituting we have
(100*0.25)/290=P2*0.05/405
25/290=0.5P2/405
0.086=0.05P2/405
cross multiply
0.086*405=0.05P2
34.9=0.05P2
divide both sides by 0.05
P2=34.9/0.05
P2=698.3Kpa
Therefore the new pressure is 698.3Kpa when the gas is compressed
when creep occurs in a plastic product, what loading and environmental conditions are likely?
Answers
Creep in a plastic product can occur due to both mechanical and environmental loading. Mechanical loading can include high mechanical stress resulting from bending, compressing, stretching, or twisting.
What is Mechanical?
Mechanical engineering is the branch of engineering that deals with the design, analysis, manufacturing, and maintenance of mechanical systems. It combines elements of physics, materials science, and engineering to create machines and devices that can perform a variety of tasks.
Mechanical engineers use their knowledge of mathematics, physics, and materials science to develop processes and machines that are efficient, reliable, and safe. Mechanical engineers design and build a wide range of products and systems, from aircraft engines to medical devices, from robots to power plants.
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given design loads and allowable stresses, an engineer designs the structure by specifying member dimensions. if a stress analysis calculates a diameter of 0.961 in for a bar, what standard bar size should be chosen?
Answers
To determine the standard bar size for the specified diameter, we need to compare the calculated diameter of 0.961 in with the standard sizes available in the market.
In the United States, standard bar sizes are typically specified in terms of eighths of an inch (1/8"). For example, a #4 bar corresponds to a diameter of 4/8" or 1/2". A #8 bar corresponds to a diameter of 8/8" or 1".
To find the closest standard bar size to 0.961 in, we can convert the decimal value to eighths of an inch by multiplying it by 8.
0.961 in * 8 = 7.688 eighths of an inch
The closest standard bar size to this value is a #8 bar, which has a diameter of 1 inch. Therefore, a #8 bar should be chosen for this design.
It's important to note that in some cases, it may be necessary to choose a custom size or to adjust the design to accommodate a standard bar size.
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please send me answer
Answers
A stirred tank reactor is to be scaled down from5 m3to0. 5 m3. The dimensions of the large reactor are:H/Dt=2. 9,Dl=0. 4 m, N=45rpm. - Calculate the height of the big reactor and the dimensions of the smaller reactor(Dt,DiandH). - Calculate the rotational speed of the impeller in the smaller reactor for the following criteria:
- Constant impeller tip speed - Constant liquid circulation rate
Answers
Constant Impeller Tip Speed: 98.4 rpm
Constant liquid circulation rate : 62.6 rpm
How to solve for the speedDt (diameter of the large reactor tank) = Dl / H/Dt
Dt = 0.4 m / 2.9
Dt ≈ 0.1379 m
H (height of the large reactor) = H/Dt * Dt
H ≈ 2.9 * 0.1379 m
H ≈ 0.4 m
0.5 / 5 = (Dt2 / 0.1379)³
0.1 = (Dt2 / 0.1379)³
\(Dt2 = 0.1 * 0.1379^3\\Dt2 = (0.1 * 0.1379)^(^1^/^3^)\)
Dt2 ≈ 0.0631 m
H2 ≈ 2.9 * 0.0631
H2 ≈ 0.1829 m
For constant tip speed, we need to maintain the same tip speed for both reactors:
π * Dl1 * N1 = π * Dl2 * N2
Speed
N2 = (Dl1 * N1) / Dl2
N2 = (0.4 * 45) / 0.1829
N2 ≈ 98.4 rpm
N2 = (0.4² * 45 * 0.0631³) / (0.1829² * 0.1379³)
N2 ≈ 62.6 rpm
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A spherical tank with a radius of 0.25 m is filled with water (ρ = 1000 kg/m3). Calculate the mass and weight of the water in SI units.
Answers
The mass of the water is 65.5 kg. The weight of the water is 641.9 kgm/s²
What is the mass of a spherical tank?The mass of a spherical tank is the space contained in the tank. The mass of the spherical tank can be determined by first finding the volume of the tank, then using the relation of density, mass, and volume to find the mass.
From the given parameter:
The radius of the tank = 0.25 mThe density of the water = 1000 kg/m³The volume of the tank can be determined by using the formula:
\(\mathbf{V = \dfrac{4}{3}\pi r^3}\)
\(\mathbf{V = \dfrac{4}{3}\pi (0.25)^3}\)
V = 0.0655 m³
Using the relation that:
\(\mathbf{Density = \dfrac{mass}{volume}}\)
\(\mathbf{1000 \ kg/m^3= \dfrac{mass}{0.0655 \ m^3}}\)
mass = 1000 kg/m³ × 0.0655 m³
mass = 65.5 kg
The weight of the water can be determined by using the formula:
Weight = mass × gravity (i.e. acceleration due to gravity)
Weight = 65.5 kg × 9.8 m/s²
Weight = 641.9 kgm/s²
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The mass of the water in spherical tank is 65.4kg.
The weight of the water in spherical tank is 640.8 Newtons.
Given the data in the question:
Radius of the spherical tank; \(r = 0.25m\)Density of water; \(p = 1000kg/m^3\)Mass of water; \(m_w = \ ?\)
Weight of water; \(Ww = \ ?\)
DensityDensity \(p\) is simply the measure of the compactness of the mass of a substance. It is expressed as;
\(Density = \frac{Mass}{Volume}\)
To determine the mass and weight of the water in spherical tank,
we calculate the Volume of the spherical tank.
\(V = \frac{4}{3}\pi r^3\)
We substitute in our given values
\(V = \frac{4}{3} * \pi * (0.25m)^3\\ \\V = \frac{4}{3} * \pi * 0.015625m^3\\\\V = 0.0654 m^3\)
Now, we calculate the mass of the water; using the expression above.
\(Density = \frac{Mass}{Volume}\\Mass = Density * Volume\\\)
We substitute in our values
\(Mass = 1000kg/m^3 \ *\ 0.0654m^3\\\\Mass = 65.4kg\)
Hence, the mass of the water in spherical tank is 65.4kg.
Next we calculate the Weight which is expressed as;
\(Weight = mass\ *\ Acceleration\ of\ gravity\)
Where acceleration of gravity \(g = 9.8m/s^2\)
We substitute in our values
\(Weight = 65.4kg * 9.8m/s^2\\\\Weight = 640.8kgm/s^2\\\\Weight = 640.8N\)
Therefore, the weight of the water in spherical tank is 640.8 Newtons.
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Order the objective lenses listed from the smallest to largest working distance that results when they are used. Oil immersion; high power; low power.
Answers
The order the objective lenses listed from the smallest to largest working distance that results when they are used is:
Oil immersion, high power, and low power.
The explanation for the same is as follows:
1. Oil immersion lens: This lens has the smallest working distance, as it is designed for maximum resolution and requires immersion oil to bridge the gap between the lens and the specimen
2. High power lens: This lens has a larger working distance than the oil immersion lens but smaller than the low power lens. It is commonly used for detailed observation of specimens
3. Low power lens: This lens has the largest working distance among the three listed, and it is typically used for initial scanning and observation of specimens.
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what is diameter of bolt M27
Answers
The diameter, bolt M27 is known to be 3.0mm in pitch and 41mm across flats.
What is the diameter of a bolt?This is a term that is often seen as the Major diameter. The diameter of a bolt is known to be a kind of a Shank diameter which is said to be often shown or expressed in the unit called millimeters in regards to Metric bolts.
This is so due to the fact that it is almost the same as the Major or Thread diameter.
Therefore, The diameter, bolt M27 is known to be 3.0mm in pitch and 41mm across flats.
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. the jet aircraft has a total mass of 22 mg and a center of mass at g. initially at takeoff the engines provide a thrust and . determine the acceleration of the plane and the normal reactions on the nose wheel at a and each of the two wing wheels located at b. neglect the mass of the wheels and, due to low velocity, neglect any lift caused by the wings.
Answers
Answer:
The acceleration of the plane is given by the equation a = F/m, where F is the thrust force and m is the mass of the plane. Therefore, the acceleration of the plane is given by a = F/22 kg.
The normal reaction on the nose wheel at A is given by the equation R_A = F + mg, where F is the thrust force and m is the mass of the plane. The normal reaction on the two wing wheels at B is given by the equation R_B = mg, where m is the mass of the plane. Therefore, the normal reaction on the nose wheel at A is given by R_A = F + 22 kg and the normal reaction on the two wing wheels at B is given by R_B = 22 kg.
Explanation:
The UHRS platform is optimized for Edge/Internet Explorer only. You can still use your favorite browser, but keep in mind that you may experience technical issues when working on UHRS with a different browser than Edge or Internet Explorer.
UHRS is optimized for...
Answers
It is to be noted that all UHRS platforms are optimized for the popular kinds of internet browser applications.
What is a UHRS?The Universal Human Relevance System (UHRS) is a crowdsourcing platform that allows for data labeling for a variety of AI application situations.
Vendor partners link people referred to as "judges" to offer data labeling at scale for us. All UHRS judges are bound by an NDA, ensuring that data is kept protected.
A browser is a software tool that allows you to see and interact with all of the knowledgeon the World Wide Web. Web sites, movies, and photos are all examples of this.
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Which of the following statements about industry self-regulation regarding privacy is not true?A) OPA members are required to implement the OPA's privacy guidelines.B) The primary focus of industry efforts has been the use of online "seals" that attest to the site's policies.C) Industry efforts have not so far succeeded in reducing American fears of privacy invasion.D) The NAI's privacy policies have established the TRUSTe seal.
Answers
The question concerns industry self-regulation and privacy, specifically focusing on which statement is not true. To answer this, we will examine each statement and determine its accuracy.
A) OPA members are required to implement the OPA's privacy guidelines - This statement is true. The Online Publishers Association (OPA) expects its members to adhere to its privacy guidelines to ensure consistency in privacy practices across the industry.
B) The primary focus of industry efforts has been the use of online "seals" that attest to the site's policies - This statement is also true. Online seals, such as the TRUSTe seal, are used to demonstrate that a website follows specific privacy standards.
C) Industry efforts have not so far succeeded in reducing American fears of privacy invasion - This statement is true as well. Despite industry self-regulation efforts, many Americans still express concerns over privacy invasion.
D) The NAI's privacy policies have established the TRUSTe seal - This statement is not true. The Network Advertising Initiative (NAI) is a separate organization from TRUSTe. NAI has its own privacy policies and self-regulatory framework, while TRUSTe is a separate organization that provides certification for privacy policies and practices.
The statement that is not true among the given options is D) The NAI's privacy policies have established the TRUSTe seal.
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Quadrilateral ABCD is a rectangle.
If m ZADB = 7k + 60 and mZCDB = -5k + 40, find mZCBD.
Answers
Hope this helps...........
Which of the following are consequences of burning coal for energy? (mark all that apply) Check All That Apply A. increased levels of CO2 in the atmosphere B. increased heavy metals (lead and mercury) released into the air C. acidified rain D. increased radicals that deplete ozone in the stratosphere:
Answers
The following are consequences of burning coal for energy increased levels of CO2 in the atmosphere, increased heavy metals (lead and mercury) released into the air and Acidified rain. The correct options are a, b and c.
Burning coal produces a number of main emissions: Sulphur dioxide (SO2), which causes respiratory conditions and acid rain, Nitrogen oxides (NOx), which cause respiratory diseases and smog, Particulates that cause lung sickness, respiratory diseases, fog, and haze, The main greenhouse gas produced by burning fossil fuels (coal, oil, and natural gas) is carbon dioxide (CO2).
Mercury and other heavy metals have been associated with developmental and neurological harm in both humans and other animals. Power stations produce bottom ash and fly ash as byproducts of burning coal.
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Using the correlation for the second virial coefficient (Pitzer correlation), find the molar volume of acetylene vapour at 247.1 K and 13.5 bar, giving your answer to the nearest cm3/mol. The critical temperature is 308.3 K and the critical pressure of acetylene is 61.39 bar. Take R = 8.314 J/mol-K and the acentric factor for acetylene is 0.187.
Answers
The molar volume of acetylene vapor at 247.1 K and 13.5 bar, using the Pitzer correlation for the second virial coefficient, is approximately 72.5 cm3/mol.
Explanation:
The Pitzer correlation can be used to estimate the second virial coefficient of a gas. The equation is given by B = (RTc)/(Pc) * (1 + m(1 - (T/Tc)^(0.5))) where B is the second virial coefficient, R is the ideal gas constant, Tc is the critical temperature, Pc is the critical pressure, T is the temperature, and m is the acentric factor.
Plugging in the given values and solving for B, we get B = -0.009413 m3/mol. Then, using the ideal gas law, V = RT/P, we can calculate the molar volume as V = (RT)/P = (8.314 J/mol-K * 247.1 K) / (13.5 bar * 10^5 Pa/bar) ≈ 0.0725 m3/mol ≈ 72.5 cm3/mol.
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The accompanying specific gravity values describe various wood types used in construction. 0.320.350.360.360.370.380.400.400.40 0.410.410.420.420.420.420.420.430.44 0.450.460.460.470.480.480.490.510.54 0.540.550.580.630.660.660.670.680.78 Construct a stem-and-leaf display using repeated stems. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.)
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Answer:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ \\ {0.3} & {\vert} & {2\ 5\ 6\ 6\ 7\ 8} \ \\ \\{0.4} & {\vert} & {0\ 0\ 0\ 1\ 1\ 2\ 2\ 2\ 2\ 2\ 3\ 4\ 5\ 6\ 6\ 7\ 8\ 8\ 9} \ \\ \ \\ {0.5} & {\vert} & {1\ 4\ 4\ 5\ 8} \ \\ \ \\ {0.6} & {\vert} & {3\ 6\ 6\ 7\ 8} \ \\ \ \\ {0.7} & {\vert} & {8} \ \ \end{array}\)
Explanation:
Given
\(0.32,\ 0.35,\ 0.36,\ 0.36,\ 0.37,\ 0.38,\ 0.40,\ 0.40,\ 0.40,\ 0.41,\)
\(0.41,\ 0.42,\ 0.42,\ 0.42,\ 0.42,\ 0.42,\ 0.43,\ 0.44,\ 0.45,\ 0.46,\)
\(0.46,\ 0.47,\ 0.48,\ 0.48,\ 0.49,\ 0.51,\ 0.54,\ 0.54,\ 0.55,\)
\(0.58,\ 0.63,\ 0.66,\ 0.66,\ 0.67,\ 0.68,\ 0.78.\)
Required
Plot a steam and leaf display for the given data
Start by categorizing the data by their tenth values:
\(0.32,\ 0.35,\ 0.36,\ 0.36,\ 0.37,\ 0.38.\)
\(0.40,\ 0.40,\ 0.40,\ 0.41,\ 0.41,\ 0.42,\ 0.42,\ 0.42,\ 0.42,\ 0.42,\)
\(0.43,\ 0.44,\ 0.45,\ 0.46,\ 0.46,\ 0.47,\ 0.48,\ 0.48,\ 0.49.\)
\(0.51,\ 0.54,\ 0.54,\ 0.55,\ 0.58.\)
\(0.63,\ 0.66,\ 0.66,\ 0.67,\ 0.68.\)
\(0.78.\)
The 0.3's is will be plotted as thus:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ {0.3} & {\vert} & {2\ 5\ 6\ 6\ 7\ 8} \ \ \end{array}\)
The 0.4's is as follows:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ {0.4} & {\vert} & {0\ 0\ 0\ 1\ 1\ 2\ 2\ 2\ 2\ 2\ 3\ 4\ 5\ 6\ 6\ 7\ 8\ 8\ 9} \ \ \end{array}\)
The 0.5's is as follows:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ {0.5} & {\vert} & {1\ 4\ 4\ 5\ 8} \ \ \end{array}\)
The 0.6's is as thus:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ {0.6} & {\vert} & {3\ 6\ 6\ 7\ 8} \ \ \end{array}\)
Lastly, the 0.7's is as thus:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ {0.7} & {\vert} & {8} \ \ \end{array}\)
The combined steam and leaf plot is:
\(\begin{array}{ccc}{Steam} & {\vert} & {Leaf} \ \\ \\ {0.3} & {\vert} & {2\ 5\ 6\ 6\ 7\ 8} \ \\ \\{0.4} & {\vert} & {0\ 0\ 0\ 1\ 1\ 2\ 2\ 2\ 2\ 2\ 3\ 4\ 5\ 6\ 6\ 7\ 8\ 8\ 9} \ \\ \ \\ {0.5} & {\vert} & {1\ 4\ 4\ 5\ 8} \ \\ \ \\ {0.6} & {\vert} & {3\ 6\ 6\ 7\ 8} \ \\ \ \\ {0.7} & {\vert} & {8} \ \ \end{array}\)
what are the wind energy meausering devices define
Answers
Anemometer
Explanation:
An anemometer is a device used for measuring wind speed and direction. It is also a common weather station instrument. The term is derived from the Greek word anemos, which means wind, and is used to describe any wind speed instrument used in meteorology.
Why is light important to our laying chickens?
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Explanation:
Understanding the significance of lighting in the production of poultry requires an examination of the biological makeup of the birds. In people, light travels from the eyes to the brain. Light enters chickens' bodies through their eyes as well as the top of the skull, their pineal gland, and their pituitary gland near their hypothalamus. Chickens have four varieties of cones, including red, blue, green, and an ultraviolet light cone, compared to human eyes' three types of cones, which are specialized photoreceptor cells that are responsible for how we perceive red, blue, and green light.
Similar to humans, chickens follow a regular cycle of day and night. Birds who have a regular cycle of day and night also have regular diurnal rhythms or a schedule of normal daily activity. For processes like the generation of melatonin, this is crucial. According to Schwean-Lardner, "It is a regular cycle that is very crucial for birds because it governs things like immune function, development rate, and reproductive hormones." The health, immune system, mobility, and attentiveness of the birds are all improved by providing them with a day-and-night cycle.
oscilloscopes have parallel metal plates inside them to deflect the electron beam. these plates are called the deflecting plates. typically, they are squares 3.0 cm on a side and separated by 5.0 mm, with very thin air in between.
Answers
These plates are typically squares that measure 3.0 cm on each side and are separated by a distance of 5.0 mm. The reason for this separation is to allow for a very thin layer of air between the plates.
When a voltage is applied to the deflecting plates, they create an electric field between them, which in turn affects the path of the electron beam. The magnitude and direction of the voltage applied to the plates determines the amount and direction of deflection that the electron beam undergoes. This allows the oscilloscope to display a graphical representation of the electrical signals it is measuring.
Overall, the deflecting plates are a crucial component of the oscilloscope, as they allow for precise and accurate measurements of electrical signals.
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why would a chip without pmos transistors be easier to fabricate? what process steps are avoided? give more than one for full credit.
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A chip without PMOS transistor is easier because pMOS transistor would not avaiable to offer a conductive path for a node all the way to the ground voltage.
Microprocessors are constructed out of transistors. In particular, they're built out of metal-oxide-semiconductor (MOS) transistors. There are kinds of MOS transistors — positive-MOS (pMOS) and negative-MOS (nMOS). Every pMOS and nMOS comes prepared with 3 primary components — the gate, the source, and the drain. NMOS and pMOS are the primary types of MOSFET. The primary difference between NMOS and pMOS is that, in NMOS, the source and the drain terminals are made from n-kind semiconductors meanwhile, in pMOS, the source and the drain are made from p-kind semiconductors.
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For proper function hydraulics systems need a reservoir of which of the following?
A.) Compressible fluid
B.) Non-compressible fluid C.) Non-compressible air
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Think of brake fluid on a vehicle, compressed as one applies the break= pressure to expand brake cylinders in the wheels which compress the pads on the wheel brake rotors.
Release brake and fluid relaxes back into the reservoir/accumulator.
1)How do you distinguish between positive and negative logic system? Prove that an OR gate in a positive logic System is an AND gate in a negative logic system.
2)Give a brief statement that would help one remember the truth table of AND ,NAND, OR, NOR, EX-OR and EX -NOR logic gate functions ,irrespective of the number of input used.
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Answer:
Positive logic is defined as a high voltage level representing a logic 1 and a low voltage level representing a logic 0. Negative logic is the reverse, i.e., a low voltage level represents a logic 1 and a high voltage level represents a logic 0.
Explanation:
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