A steam turbine receives 8 kg/s of steam at 9 MPa, 650 C and 60 m/s (pressure, temperature and velocity). It discharges liquid-vapor mixture with a quality of 0.94 at a pressure of 325 kPa and a velocity of 15 m/s. In addition, there is heat transfer from the turbine to the surroundings for 560 kW. Find the power produced by the turbine and express it in kW?
Answers
Answer:
The power produced by the turbine is 23309.1856 kW
Explanation:
h₁ = 3755.39
s₁ = 7.0955
s₂ = sf + x₂sfg =
Interpolating fot the pressure at 3.25 bar gives;
570.935 +(3.25 - 3.2)/(3.3 - 3.2)*(575.500 - 570.935) = 573.2175
2156.92 +(3.25 - 3.2)/(3.3 - 3.2)*(2153.77- 2156.92) = 2155.345
h₂ = 573.2175 + 0.94*2155.345 = 2599.2418 kJ/kg
Power output of the turbine formula =
\(Q - \dot{W } = \dot{m}\left [ \left (h_{2}-h_{1} \right )+\dfrac{v_{2}^{2}- v_{1}^{2}}{2} + g(z_{2}-z_{1})\right ]\)
Which gives;
\(560 - \dot{W } = 8\left [ \left (2599.2418-3755.39 \right )+\dfrac{15^{2}- 60^{2}}{2} \right ]\)
= -8*((2599.2418 - 3755.39)+(15^2 - 60^2)/2 ) = -22749.1856
\(- \dot{W }\) = -22749.1856 - 560 = -23309.1856 kJ
\(\dot{W }\) = 23309.1856 kJ
Power produced by the turbine = Work done per second = 23309.1856 kW.
Related Questions
A battery with an f.e.m. of 12 V and negligible internal resistance is connected to a resistor of 545 How much energy is dissipated by the resistor in 65 s?
Answers
Answer:
When are resistors in series? Resistors are in series whenever the flow of charge, called the current, must flow through devices sequentially. For example, if current flows through a person holding a screwdriver and into the Earth, then
R
1
in Figure 1(a) could be the resistance of the screwdriver’s shaft,
R
2
the resistance of its handle,
R
3
the person’s body resistance, and
R
4
the resistance of her shoes.
Figure 2 shows resistors in series connected to a voltage source. It seems reasonable that the total resistance is the sum of the individual resistances, considering that the current has to pass through each resistor in sequence. (This fact would be an advantage to a person wishing to avoid an electrical shock, who could reduce the current by wearing high-resistance rubber-soled shoes. It could be a disadvantage if one of the resistances were a faulty high-resistance cord to an appliance that would reduce the operating current.)
Two electrical circuits are compared. The first one has three resistors, R sub one, R sub two, and R sub three, connected in series with a voltage source V to form a closed circuit. The first circuit is equivalent to the second circuit, which has a single resistor R sub s connected to a voltage source V. Both circuits carry a current I, which starts from the positive end of the voltage source and moves in a clockwise direction around the circuit.
Figure 2. Three resistors connected in series to a battery (left) and the equivalent single or series resistance (right).
To verify that resistances in series do indeed add, let us consider the loss of electrical power, called a voltage drop, in each resistor in Figure 2.
According to Ohm’s law, the voltage drop,
V
, across a resistor when a current flows through it is calculated using the equation
V
=
I
R
, where
I
equals the current in amps (A) and
R
is the resistance in ohms
(
Ω
)
. Another way to think of this is that
V
is the voltage necessary to make a current
I
flow through a resistance
R
.
So the voltage drop across
R
1
is
V
1
=
I
R
1
, that across
R
2
is
V
2
=
I
R
2
, and that across
R
3
is
V
3
=
I
R
3
. The sum of these voltages equals the voltage output of the source; that is,
V
=
V
1
+
V
2
+
V
3
.
This equation is based on the conservation of energy and conservation of charge. Electrical potential energy can be described by the equation
P
E
=
q
V
, where
q
is the electric charge and
V
is the voltage. Thus the energy supplied by the source is
q
V
, while that dissipated by the resistors is
q
V
1
+
q
V
2
+
q
V
3
.
Explanation:
the thevenin impedance of a network seen from the load terminals is 80 j55 ohms. for maximum power transfer, the load impedance must be:
Answers
The load impedance must be equal to the Thevenin impedance for maximum power transfer, so the load impedance must be 80 j55 ohms.
What is power?
Power is a measure of the ability to influence the environment, or to cause a change. It can be physical, financial, psychological, or a combination of all three. Power can be used for good or for bad, depending on the intentions of the person wielding it. Some examples of power include control over resources, authority and influence, access to information, and the ability to make decisions and take action. Power can also be seen as a form of privilege, as it often brings with it social, political, and economic advantages.
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Which option demonstrates when most vehicles lose their efficiency?
as they refuel
during starts and stops
during the testing phase
as they brake
Answers
Hey there ..
I think the answer is as they put brake ..
I am not sure .. just check the image also provided above .. ..
If u think this helped u ..plz mark me as brainliest ..
And follow me
Answer:
During starts and stops
Explanation:
"Many of the energy inefficiencies in vehicles occur during starts and stops."
found it in the text.
Answer the question on the image and a brianiest will be given to the person that provided the right answer to it.
Answers
Answer:
(a) The distance up the slope the wagon moves before coming to rest is approximately 21.74 m
(b) The distance the wagon comes to rest from the starting point is approximately 12.06 m
(c) The value of 'U' at which the wagon should be propelled if it is to come finally to rest at its starting point is approximately 3.214 m/s (the difference in value can come from calculating processes)
Explanation:
The wagon motion parameters are;
The mass of the wagon, m = 7,200 kg
The initial velocity with which the wagon is projected along the horizontal rail, v = U
The length of the horizontal portion of the rail = 100 m
The angle of inclination of the inclined portion of the rail, θ = sin⁻¹(0.01)
The exerted frictional resistance to motion of the rail, \(F_f\) = 140 N
∴ θ = sin⁻¹(0.01)
The work done by the frictional force on the horizontal portion of the rail = 140 N × 100 m = 14,000 J
(a) If U = 3 m/s, we have;
Kinetic energy = 1/2·m·v²
The initial kinetic energy of the wagon, K.E. is given with the known parameters as follows;
K.E. = 1/2 × 7,200 kg × (3 m/s)² = 32,400 J
The energy, E, required to move a distance, 'd', up the slope is given as follows;
E = \(F_f\) × d + m·g·h
Where;
\(F_f\) = The friction force = 140 N
m = The mass of the wagon = 7,200 kg
g = The acceleration due to gravity ≈ 9.81 m/s²
h = The height reached = d × sin(θ) = d × 0.01
Therefore;
E = 140 N × d₁ + 7,200 kg × 9.81 m/s² × d₁ × 0.01 = 846.32 N × d
The energy, \(E_{NET \ horizontal}\), remaining from the horizontal portion of the rail is given as follows;
\(E_{NET \ horizontal}\) = Initial kinetic energy of the wagon - Work done on frictional resistance on the horizontal portion of the rail
∴ \(E_{NET \ horizontal}\) = 32,400 J - 14,000 J = 18,400 J
\(E_{NET \ horizontal}\) = 18,400 J
Therefore, for the wagon with energy, \(E_{NET \ horizontal}\) to move up the train, we get;
\(E_{NET \ horizontal}\) = E
∴ 18,400 J = 846.32N × d
d₁ = 18,400 J/(846.36 N) ≈ 21.7401579 m
d₁ ≈ 21.74 m
The distance up the slope the wagon moves before coming to rest, d₁ ≈ 21.74 m
(b) Given that the initial velocity of the wagon, U = 3 m/s, the distance up the slope the wagon moves before coming to rest is given above as d₁ ≈ 21.74 m
The initial potential energy, PE, of the wagon while at the maximum height up the slope is given as follows;
P.E. = m·g·h = 7,200 kg × 9.81 m/s² × 21.74 × 0.01 m = 15,355.3968 J
The work done, 'W', on the frictional force on the return of the wagon is given as follows;
W = \(F_f\) × d₂
Where d₂ = the distance moved by the wagon
By conservation of energy, we have;
P.E. = W
∴ 15,355.3968 = 140 × d₂
d₂ = 15,355.4/140 = 109.681405714
Therefore;
The distance the wagon moves from the maximum height, d₂ ≈ 109.68 m
The distance the wagon comes to rest from the starting point, d₃, is given as follows;
d₃ = Horizontal distance + d₁ - d₂
d₃ = 100 m + 21.74 m - 109.68 m ≈ 12.06 m
The distance the wagon comes to rest from the starting point, d₃ ≈ 12.06 m
(c) For the wagon to come finally to rest at it starting point, we have;
The initial kinetic energy = The total work done
1/2·m·v² = 2 × \(F_f\) × d
∴ 1/2 × 7,200 × U² = 2 × 140 × d₄
d₄ = 100 + (1/2·m·U² - 140×100)
(1/2·m·U² - 140×100)/(m·g) = h = d₁ × 0.01
∴ d₁ = (1/2·m·U² - 140×100)/(m·g×0.01)
d₄ = 100 + d₁
∴ d₄ = 100 + (1/2·m·U² - 140×100)/(m·g×0.01)
∴ 1/2 × 7,200 × U² = 2 × 140 × (100 + (1/2 × 7,200 × U² - 140×100)/(7,200 × 9.81 ×0.01))
3,600·U² = 280·(100 + (3,600·U² - 14,000)/706.32)
= 28000 + 280×3,600·U²/706.32 - 280 × 14,000/706.32
= 28000 - 280 × 14,000/706.32 + 1427.11518858·U²
3,600·U² - 1427.11518858·U² = 28000 - 280 × 14,000/706.32
U²·(3,600 - 1427.11518858) = (28000 - 280 × 14,000/706.32)
U² = (28000 - 280 × 14,000/706.32)/(3,600 - 1427.11518858) = 10.3319363649
U = √(10.3319363649) = 3.21433295801
The value of 'U' at which the wagon should be propelled if it is to come finally to rest at its starting point is U ≈ 3.214 m/s
Percentage error = (3.214-3.115)/3.214 × 100 ≈ 3.1% < 5% (Acceptable)
The difference in value can come from difference in calculating methods
computer system analyst advantage
Answers
Answer:
They help an organization realize the maximum benefit from its investment in equipment, personnel, and business processes. They use and analyze systems, interpret data, and customize systems to better meet the organization's needs.
Explanation:
brainliest plz
Answer:
ục tiêu của pháp y máy tính là kiểm tra phương tiện kỹ thuật số theo cách thức pháp y với mục đích xác định, bảo tồn, phục hồi, phân tích và trình bày các sự kiện và ý kiến về thông tin kỹ thuật số
Explanation:
An AC bridge has 4 arms. In arm AB, a 120 kilo-ohm resistor and a 47 microfarads capacitor are connected in parallel while arm BC has 330 microfarads capacitor. If arm AD has a 330 kilo-ohm resistor, calculate the value of the unknown capacitor and resistor in arm CD connected in series. (AC power is supplied through A and C while the detector is connected across BD)
Answers
The unknown capacitor in arm CD must have a value of 330 microfarads, and the unknown resistor must have a value of 100 kilo-ohms.
To solve the problem, use the following formula:
Cseries = C1 x C2 / (C1 + C2)
Where C1 is the value of the capacitor in arm AB (47 microfarads) and C2 is the value of the capacitor in arm BC (330 microfarads).
Therefore, Cseries = 330 microfarads.
Also, the total resistance of arms CD is the sum of the resistance of the resistor (R) and the reciprocal of the capacitive reactance of the capacitor (1/Xc).
Using the following formula:
Rtotal = R + 1/Xc
Where Xc = 1/2πfC,
f is the frequency and C is the capacitance.
For this problem,
Xc = 1/2π(50)(330 x 10-6)
=> 100 kilo-ohm.
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a continuous-time system has the input/output relationshipwhere x(t) is the input and y(t) is the output. determine the impulse response h(t) of the system. [make sure your answer includes both t<0 and t>
Answers
The correct answer is Without any information about the input/output relationship, it is impossible to determine the impulse response of the system.
However, given an input signal x(t) and its corresponding output signal y(t), the impulse response h(t) can be found using the convolution integral:h(t) = 1/|x(τ)| ∫ x(τ) y(t-τ) dτ where |x(τ)| is the magnitude of the input signal at time τ.Alternatively, if the transfer function of the system is known, the impulse response can be found by taking the inverse Laplace transform of the transfer function.In any case, the impulse response h(t) will be a function of time for both t<0 and t>0, since it represents the system's response to a brief impulse input at any point in time.
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Ferroconcrete is reinforced concrete that combines concrete and ________. A. Lead c. Copper b. Iron d. Aluminum.
Answers
Answer:
B. Iron
Explanation:
took the test.
2.2.2 Make a list of the electronic components that could be used in making this product (energy saving switch).
Answers
The electronic components that could be used in making of energy saving switch are:
Transistors semiconductor devices CapacitorsCoils (inductors) Which electronic component is used as a switch?Transistors as well as other kinds of semiconductor devices are known to be tools or element that can be used in the making of switches. In its use or applications.
Note that the base or gate of a transistor, based on the kind of transistor that is known to be in use, and it is one that is often employed as a form of control element to be able to switch on as well as switch off the current that often exist between the emitter as well as the collector or the source and that of the drain.
Note also that the electronic components that are able to store energy in regards to electronic devices, are known to be capacitors and coils (inductors) and they often play a key function of temporarily saving energy. One key role of a capacitor is to save an electric charge.
Therefore, The electronic components that could be used in making of energy saving switch are:
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.Once you have your program running and working, create a small table (like the one shown on slide 51 in the video called pow( )'s Prologue: Setting up the Frame). In your table, show me what "main’s" frame and "sub_factorial’s" frame look like on the stack. Identify where the variables are on the stack, and list (on the right, as in slide 51) what each row of the stack does and what its holding. Show the state of the stack, right before the "return" instruction is executed in "sub_factorial". The instructions given in the last section (for how to examine the stack) will help you complete this section.
To submit the written part of this HW, upload the completed template to your Codio workspace
Answers
I can provide you with a description of the stack frames for "main" and "sub_factorial" based on the given information.
How to explain thisIn the stack frame for "main," the variables will be stored on the stack. The exact layout will depend on the specific implementation, but it typically includes parameters, local variables, return address, and the base pointer (if applicable).
In the stack frame for "sub_factorial," again, the variables will be stored on the stack. It will have its own set of parameters, local variables, return address, and potentially the base pointer. The state of the stack right before the "return" instruction in "sub_factorial" will depend on the execution flow and the specific values of the variables at that point.
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In JavaScript object notation processing, which statements are true about the JSON data structures? Select all that apply.
1-JSON is called JavaScript object notation.
2-JSON is often used in REST web APIs.
3-JSON is dependent to language and platform.
4-JSON is a light-weight data exchange format.
A-1-2-3
B-2-3-4
C-1-3-4
D-1-2-4
Answers
JSON stands for JavaScript Object Notation. JSON data structures is a light-weight data exchange format.
JSON is dependent on language and platform. JSON is often used in RESTful web APIs. The correct statements about JSON data structures are:
1. JSON is called JavaScript object notation
.2. JSON is often used in REST web APIs.
4. JSON is a light-weight data exchange format.Therefore, the main answer is option D: 1-2-4. However, it is important to note that JSON is not dependent on language and platform. It is an independent data exchange format that is widely used for data transmission.
To answer this question more than 100 words:
The JSON (JavaScript Object Notation) data structures are a lightweight data exchange format. It is called JavaScript object notation. It is often used in REST web APIs. The main benefit of using JSON is its readability for both humans and machines. It is simple to read and write JSON data, which makes it easy to parse and generate data across various languages and platforms.JSON data structures are used in a variety of contexts. It is commonly used as a data interchange format for web applications and RESTful web APIs. When web applications request data from servers or APIs, the data is often returned in the form of JSON. JSON structures are easy to create and parse, making them a popular choice for data exchange between web applications. JSON is an independent data exchange format that is widely used for data transmission. It is not dependent on any specific language or platform. This makes it a popular choice for data exchange across different platforms and systems.In conclusion, JSON is a light-weight data exchange format that is widely used in REST web APIs. It is independent of language and platform. JSON structures are simple to read and write, making them easy to parse and generate data across various languages and platforms.
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Agassi must notify the commissioner electronically or in writing following the requirements of the texas occupations code 1702 452 within _____ business days when i first another appointment with an agency resign or is terminated
Answers
Agassi must notify the commissioner electronically or in writing within 14 business days following the requirements of the Texas Occupations Code 1702.452 when he has a new appointment with an agency, resigns, or is terminated.
Firstly, the notification requirement ensures that the commissioner is kept informed about changes in Agassi's employment status. This allows the commissioner to have an accurate record of Agassi's professional activities and facilitates effective oversight of the regulated profession.
Secondly, the notification requirement helps maintain transparency within the regulated profession. By notifying the commissioner of any new appointments, resignations, or terminations, Agassi ensures that there is clarity regarding his professional engagements and helps prevent any potential conflicts of interest or violations of regulatory guidelines.
Lastly, the requirement promotes accountability by making Agassi responsible for promptly notifying the commissioner. It helps demonstrate Agassi's commitment to complying with the regulations and expectations set forth by the Texas Occupations Code.
Overall, adhering to the notification requirement is essential for Agassi to fulfill his obligations as a regulated professional and contribute to a well-regulated and transparent professional environment.
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Users regularly log on with a username and password. However, management wants to add a second authentication factor for any users who launch the gcga application. The method needs to be user-friendly and non-disruptive. Which of the following will BEST meet these requirements?An authentication applicationTPMHSMPush notifications
Answers
Push notifications would likely be the best option for adding a second authentication factor that is user-friendly and non-disruptive.
An authentication application, such as a token generator or authenticator app, could also be a good choice, as it would allow users to easily complete the second authentication step without having to remember additional passwords or codes.
TPM (Trusted Platform Module) and HSMs (Hardware Security Modules) are hardware-based security measures that can provide additional protection for sensitive data, but they may not be as user-friendly or non-disruptive as the other options.
It's worth considering the specific needs and requirements of your organization and the users in deciding which option to choose.
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4kj of energy are supplied to a machine used for lifting a mass.The force required is 800N.If the machine has an efficiency of 50%. To what height will it lift the mass?
Answers
Fig_Q5
6. A steel rod is stressed by a tension force of 250 N. It is found that the rod has length of 45
m and diameter of 1.5 mm. If the modulus of elasticity of the steel rod is assumed as 2 x 105
MPa, determine the strain of the steel rod due to the applied force.
Answers
Answer:
The strain of the steel rod due to the applied force is 41.93
Explanation:
Modulus of elasticity is equal to stress divided by strain.
And stress is equal to force divided by area
Surface area of cylindrical rod
\(2\pi r (r+h)\)
Substituting the given values we get -
\(2 *3.14 * \frac{1.5}{1000} * 45 (45 + \frac{1.5}{1000}) = 19.07\)
\(2 * 10 ^5 = \frac{250}{19.07 * S=(\frac{\Delta L}{L} )}\)
Hence, strain is equal to
Strain = 41.93
Technician A says that for any fuel to burn efficiently, it must be vaporized and fully mixed with the proper amount of air. Technician B says that small fuel particles are easier to vaporize. Who is correct?
Answers
Both technicians are correct
Explanation:
They are each correct for separate reasons. Tech A is correct due to pressure and temperature both being important factors and quantities to vaporize anything. Tech B is correct due to fuel particles being easier to burn due to their chemical structure.
A gas is contained in a vertical, frictionless piston– cylinder device. The piston has a mass of 3.2 kg and a crosssectional area of 35 cm2. A compressed spring above the piston exerts a force of 150 N on the piston. If the atmospheric pressure is 95 kPa. Determine the pressure inside the cylinder.
Answers
Answer:
Pressure = 51.8 x 10³ Pa = 51.8 KPa
Explanation:
First, we calculate the total force exerted on the piston:
Total Force = Force Exerted by Spring + Weight of Piston
Total Force = 150 N + (mass)(g)
Total Force = 150 N + (3.2 kg)(9.8 m/s²)
Total Force = 150 N + 31.36 N
Total Force = 181.36 N
Now, for cross-sectional area of piston:
Area = (35 cm²)(1 x 10⁻⁴ m²/1 cm²)
Area = 0.0035 m²
Now, for pressure inside the cylinder:
Pressure = Total Force/Area
Pressure = 181.36 N/0.0035 m²
Pressure = 51.8 x 10³ Pa = 51.8 KPa
Extreme fire behavior has caused major losses of life and property in the interface.Identify THREE contributing factors to extreme fire behavior.- Dry and plentiful fuels.- Lawns surrounding structures.- Eye level wind speeds greater than 15 miles per hour (24 km/hour).- Steady burning.- Unstable atmosphere.
Answers
Extreme fire behavior is a dangerous and devastating phenomenon that can cause significant losses of life and property in the interface. There are several factors that contribute to this behavior, but three of the most significant ones are dry and plentiful fuels, lawns surrounding structures, and eye level wind speeds greater than 15 miles per hour (24 km/hour).
Dry and plentiful fuels are a major contributing factor as they provide the fire with a ready source of fuel to burn, allowing the fire to spread rapidly and uncontrollably. Lawns surrounding structures are another contributing factor as they can act as a bridge between the fire and the structure, allowing the fire to easily reach and ignite the building. Finally, eye level wind speeds greater than 15 miles per hour (24 km/hour) can exacerbate extreme fire behavior by providing the fire with a source of oxygen, allowing it to burn hotter and faster, and making it more difficult for firefighters to control. In addition to these factors, steady burning and an unstable atmosphere can also contribute to extreme fire behavior. It is important to take these factors into account when planning for fire safety and prevention in the interface.
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Sedimentation tanks in a rapid sand filtration plant must be designed to achieve a minimum hydraulic residence time of 3 hours and a maximum hydraulic loading rate of 750 gal day-1 ft-2. For a water production rate of 500,000 gallons per day, determine the dimensions of the sedimentation tanks. There should be a minimum of two tanks in parallel for reliability. Use a rectangular tank configuration with a width equal to approximately one tenth of the length.
Answers
The dimensions of the rapid mixing tank for the given production rate of water are 5.8 feet for the width and 7.25 feet for the depth.
Production rate of water = 500,000 gallons/day
Hydraulic residence time = 30 seconds
Number of tanks = 2
Depth of the tank = 1.25 times of width. We are supposed to determine the dimensions of the rapid mixing tanks.For the purpose of the rapid sand filtration plant, the dimension of the rapid mixing tank should be at least equal to the minimum hydraulic residence time which is 30 seconds.
So, the volume of water that is required to be treated per second can be calculated as follows:
V = Production rate of water / 24 × 3600 seconds = 500,000 / 24 × 3600 = 5.787 gallons/second. Let, x be the width of the tank, then the depth of the tank should be 1.25x.So, the volume of the tank can be expressed as follows:
V = x^2 × 1.25x = 1.25x^3
The minimum hydraulic residence time is given as 30 seconds.Therefore, the volume of the rapid mixing tank should beV = Q × T = 5.787 × 30 = 173.61 gallons. Therefore,1.25x^3 = 173.61x^3 = 138.89 feet. Cube root of 138.89 is approximately 5.8.Therefore, the width of the tank is approximately 5.8 feet.
The depth of the tank is 1.25 times the width.Therefore, the depth of the tank is 7.25 feet.Finally, the dimensions of the tank are Width = 5.8 feet. Depth = 7.25 feet.
Hence, the dimensions of the tank for the given production rate of water are 5.8 feet for the width and 7.25 feet for the depth.
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An ideal Otto Cycle has a compression ratio of 9.2 and uses air as the working fluid. At the beginning of the compression process, air is at 98kPa and 20C. The pressure is doubled during the constant volume heat addition process. Assuming constant specific heats, determine:
Answers
Answer: hello your question is incomplete below is the complete question
An ideal Otto Cycle has a compression ratio of 9.2 and uses air as the working fluid. At the beginning of the compression process, air is at 98kPa and 20C. The pressure is doubled during the constant volume heat addition process. Assuming constant specific heats, determine:the amount of heat transferred to the air
answer : 609.804 kj/kg
Explanation:
Given data:
compression ratio (r)= 9.2
pressure given(p1) = 98 kPa
Initial temperature = 20 + 273 = 293 k
pressure during constant volume heat addition process = 2p1
note : specific heat at constant pressure and specific heat at constant volume varies with temperature
we use T = 300k because it is closest to T1 = 293 k
hence at T = 300 K ( ideal gas properties of air )
\(u_{1}\) = 214.07 Kj/kg
\(v _{r1}\) = 621.2
To get \(v_{r2}\) = \(v_{r1} * \frac{v_{2} }{r}\) = 621.2 * 1 / 9.2 = 67.52
ALSO at \(v_{r2}\) = 67.52 ( from ideal gas properties )
\(u_{2}\) = 518.9 kj/kg
T2 = 708.32 k
next we apply the gas equation
\(\frac{p1v1}{T1} = \frac{p2v2}{T2}\)
hence p2 = (9.2) * \(\frac{708.32}{293} * 98\) = 2179.59 kpa
to determine T3 due to the constant volume heat addition
\(\frac{T3}{T2} = \frac{P3}{P2}\)
Hence T3 = p3/p2 * T2 = 2( 708.32 ) = 1416.64 k
At T3 = 1416.64 k ( from ideal gas properties )
\(u_{3}\) = 1128.704 kj/kg
\(v_{r3}\) = 8.592
Determine the amount of heat transferred to the air
\(q_{in} = ( u_{3} - u_{2} )\)
= ( 1128.704 - 518.9 )
= 609.804 kj/kg
What are the likely consequences of adding too much water (more than the design mix w/cm ratio) to a concrete mix
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Concrete is a significant building material that is widely used in construction projects. Concrete requires a particular amount of water to achieve the desired strength and durability.
The amount of water in the mixture is critical since adding too much or too little can result in significant consequences. Here are the likely consequences of adding too much water (more than the design mix w/cm ratio) to a concrete mix:Reduction in strength of the concrete mixThe strength of the concrete mix reduces when too much water is added to the mixture.
The chemical reaction between water and cement is essential in concrete strength development. The extra water dilutes the cement content in the mixture, thereby reducing the strength of the concrete mix. Increase in porosityToo much water in a concrete mix increases the porosity of the concrete mix.
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Determine whether each graph has an Euler path and whether it has an Euler circuit. Write "Yes" or "No" in each blank space. Write the degree of each vertex. Write the degree of each vertex at each of the vertices.
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Without specific details or descriptions of the graphs, it is not possible to determine whether each graph has an Euler path or an Euler circuit, or to provide the degree of each vertex.
Is it possible to determine the presence of an Euler path or an Euler circuit in a graph without knowing its specific details or descriptions?Determining the presence of an Euler path or an Euler circuit in a graph requires knowledge about the specific details and connections of the graph.
This includes information about the number of vertices, edges, and the connections between them.
Without this information, it is not possible to determine whether an Euler path or an Euler circuit exists.
Additionally, determining the degree of each vertex requires knowledge of the specific graph structure.
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met laboratories and qai laboratories are examples of
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Met Laboratories and QAI Laboratories are examples of testing and certification organizations.
What is the rationale for the above response?Both Met Laboratories and QAI Laboratories are independent organizations that provide testing, inspection, and certification services to various industries, including electronics, appliances, and consumer goods.
These organizations test products to ensure that they meet industry and regulatory standards for safety, performance, and quality. Once products have been tested and certified by these organizations, they can be marked with a label or certification mark indicating that they have met the applicable standards.
Therefore, Met Laboratories and QAI Laboratories are examples of testing and certification organizations.
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What type of mask is recommended for full face protection when spraying pesticides in an industrial setting?
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When spraying pesticides in an industrial setting, it is recommended to use a full-face respirator mask with a chemical cartridge filter.
This type of mask provides full-face protection and is designed to filter out harmful chemical vapors, gases, and particles that may be present in the air. The chemical cartridge filter is specifically designed to remove pesticides and other hazardous chemicals from the air, ensuring that the user does not inhale them. It is important to choose a mask that is specifically designed for pesticide use and to follow the manufacturer's instructions for use and maintenance to ensure maximum protection. Additionally, other personal protective equipment, such as gloves and protective clothing, should also be worn to prevent skin contact with pesticides.
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If the effects of atmospheric resistance are accounted for, a freely falling body has an acceleration defined by the equation a = 9.81[1 - v^2 (10^-4)] m/s^2, where v is in m/s and the positive direction is downward. If the body is released from rest at a very high altitude, determine (a) the velocity when t = 5 s, and (b) the body’s terminal or maximum attainable velocity (as t → [infinity]).
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The velocity after 5 seconds can be calculated using the equation:
v = v0 + at, where v0 is the initial velocity (0 m/s) and a is the acceleration defined by the equation a = 9.81[1 - v^2 (10^-4)].
To find the terminal velocity, we need to set the acceleration to zero and solve for v.
0 = 9.81[1 - v^2 (10^-4)]
v^2 = 9.81 / 10^-4
v = sqrt (9.81 / 10^-4) = 99.97 m/s
(a) The velocity when t = 5 s is approximately 99.97 m/s.
(b) The body's terminal or maximum attainable velocity is 99.97 m/s
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Many of the problems applied scientists address are multidisciplinary issues and therefore require the collaboration of scientists with a variety of skills and knowledge. Explain which types of scientists might be involved in studying global warming.
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The consensus couldn’t be clearer. Climate change is happening. It’s caused primarily by the burning of oil, gas, and coal. If we do nothing, the world will become significantly less habitable.
We’ve lost precious time, but if we act now—decisively and dramatically—we still have a chance at avoiding climate change’s most catastrophic impacts
g imagine you are using pulse-width-modulation (pwm) to output an analog voltage signal with your arduino (which can only output 0v or 5v). what duty cycle would you use to output 3v? group of answer choices 40% 2% 20% none of the other answers 60%
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Pulse Width Modulation, or PWM, is a technique for getting analog results with digital means.
What duty cycle would you use to output 3v?
To get 3V from a microcontroller digital pin which can either be high at 5V or LOW at 0V, we need to use a PWM signal of 60% duty cycle .The duty cycle controls the analog voltage in a very direct way; the higher the duty cycle the higher the voltage. In the case of the BASIC Stamp, the duty cycle can range from 0 to 255. Duty is literally the proportion of 1s to 0s output by the PWM command.Duty cycle can take on values only between 0 and 1; therefore, the output voltage of a boost regulator is always higher than the input voltage. The duty cycle is between 0 and 1. It can be 0 if the chopper switch is never on and it can be 1 when the chopper switch is always on. 9. If T is the time period for a chopper circuit and α is its duty cycle, then the chopping frequency is. a) Ton/α.To learn more about duty cycle refers to:
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15. Concerning blood, which virus poses the greatest risk for workers?
A) O HIV
B) O Hepatitis C
C) O Hepatitis A
D) O Hepatitis B
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Answer:
I think the answer is A. HIV
why might you place an x in the aesthetic concerns boxes for elevation projects on the preliminary floodproofing/retrofitting preference matrix?
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The floodproofing/retrofitting preference matrix is a tool used by professionals to assess a building’s flood risk and prioritize flood mitigation strategies. This matrix can assist owners, designers, and contractors in evaluating retrofit options and deciding which ones to pursue.
The aesthetic concerns boxes for elevation projects may be marked with an "X" in certain cases to indicate that the proposed elevation project may have a negative impact on the building's appearance or its overall aesthetic quality. This decision to mark the aesthetic concerns box with an "X" may be based on several factors, including the following:1. Preservation of historical or cultural significance: If the building has historical or cultural significance, the proposed elevation project may need to adhere to specific guidelines to ensure that its historical or cultural significance is preserved.2. The neighborhood context: If the building is located in a neighborhood with a distinct architectural style or a specific aesthetic quality, the proposed elevation project may need to match or complement that aesthetic to avoid standing out or clashing with the surrounding buildings.3. The owner's preference: The owner's preference may also play a role in the decision to mark the aesthetic concerns box with an "X." The owner may prefer that the building's appearance remains unchanged, or they may be willing to accept some changes to the building's appearance if they result in greater flood protection.In summary, the decision to mark the aesthetic concerns box with an "X" in elevation projects on the preliminary floodproofing/retrofitting preference matrix may depend on various factors, including the building's historical or cultural significance, the neighborhood context, and the owner's preference. However, it is important to note that flood mitigation strategies are primarily designed to protect buildings from damage caused by flooding and may sometimes require trade-offs between aesthetics and functionality.
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Which of the following algorithms display all integers between 1 and 20, inclusive, that are not divisible by 3 ?
Select two answers.
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There are multiple ways to display all integers between 1 and 20 inclusive that are not divisible by 3. Two of the possible solutions could be:
A for loop that runs through the range of numbers from 1 to 20, checking each number by using an if statement and checking if it's divisible by 3, if not then it's displayed. This can be a good solution if we know the range of number and we have to use iteration to check each one.
A while loop that starts with the number 1 and continue to increment the number by 1 and check using if statement if the current number is divisible by 3. If not, it's displayed. This can be good solution when we have to check large range of number where we don't know end point.
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If xi is greater than 20, algorithms show all integers between 1 and 20, inclusive, that are not divisible by 3.
What do you understand by integer?The notation Z for the set of integers derives from the German word Zahlen, which means "numbers." Integers are classified as strictly greater or strictly smaller than zero, with positive integers being strictly greater than zero.
The integers are a group of whole numbers and their opposites. Fractions and decimals are not included in the set of integers. Examples of integers include 2, 5, 0, 12, 244, 15, and 8.
An integer, is a whole number that is not a fraction and can be positive, negative, or zero. Examples of integers are -5, 1, 5, 8, 97, and 3,043, as well as other non-integer values like 1.43, 1 3/4, and 3.14.
Set x to 0
X is increased by 1.
Display x if it is not divisible by 3.
Repeat steps 2 and 3 until x is 20 in step 4.
Place x at 1.
Display x unless x is not divisible by 3; else, do nothing.
Add one to x.
Continue the previous two steps until xi is larger than 20.
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