The circuit's output frequency is 5,859.38 Hz, MOD 256, 256 counts, 255 maximum counts, and Output F = Input Signal/Mod #.
What does the flip-flop clock signal mean?According to the levels of the input signals at the transition, clocking causes the flip-flop to either change or retain its output signal. Some flip-flops adjust their output when the clock's rising edge occurs.
What is the flip-maximum flop's clock frequency?The highest possible clock frequency is 3.33 GHz, or fc = 1/Tc. The short path's speed of 55 ps is similarly unchanged. The skew effectively lengthens the hold duration to 60 + 50 = 110 ps, which is significantly longer than 55 ps. Therefore, at any frequency, the circuit will break the hold time and fail.
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New cities from scratch are often portrayed as utopian and solutions to the problems of existing cities (pollution, crime, poverty, poor housing, and infrastructure, etc.). This was the case with the 20th Century British New Town movement and it is again the case with new smart and sustainable master planned cities, although the details are very different. How would you assess the promises made about scratch cities and what might be of concern?
Assessing the promises made about new cities built from scratch requires a critical evaluation of their potential benefits and challenges. While such cities may offer solutions to existing urban problems, there are several factors of concern that need to be considered:
1. Implementation Challenges: Building a city from scratch is a complex and challenging task. It involves extensive planning, coordination, and financial investment. Delays and cost overruns can be common, impacting the realization of promised benefits.
2. Sustainability and Environmental Impact: New cities often promote sustainability and eco-friendly practices. However, there is a need to ensure that these cities truly deliver on their environmental promises throughout their lifespan. Issues such as resource consumption, waste management, and carbon emissions must be carefully addressed.
3. Social and Economic Equity: Scratch cities may claim to address social inequalities and provide affordable housing. However, ensuring equitable access to housing, education, healthcare, and employment opportunities for diverse socio-economic groups is crucial. Care must be taken to avoid creating new forms of exclusion and segregation.
4. Community Engagement and Identity: Creating a sense of community and fostering a unique city identity takes time and effort. It is essential to involve residents and stakeholders in the planning process to ensure their needs, preferences, and cultural aspects are considered.
5. Long-Term Viability: The long-term sustainability and success of new cities depend on various factors, including economic diversification, job creation, attracting investments, and adapting to changing demographics and technological advancements. Ongoing governance and management strategies are essential for their continued growth and development.
6. Infrastructure and Connectivity: Adequate infrastructure, transportation networks, and connectivity are vital for the smooth functioning and accessibility of new cities. Planning for efficient transportation systems, public spaces, and connectivity with existing urban areas is critical to avoid isolation and promote integration.
7. Economic Development and Job Opportunities: Scratch cities often promise economic growth and employment opportunities. However, the transition from initial development to a self-sustaining economy can be challenging. Ensuring a diversified and resilient economy with sustainable job opportunities is crucial for the long-term prosperity of the city.
8. Cultural and Social Vibrancy: Creating vibrant cultural and social spaces is important for the quality of life in new cities. Encouraging artistic expression, cultural events, and social interactions can contribute to the overall livability and attractiveness of the city.
In assessing promises made about scratch cities, it is important to critically analyze these factors and ensure that realistic expectations, proper planning, community engagement, and ongoing monitoring and evaluation are integral parts of the development process. This can help address concerns and increase the likelihood of achieving the envisioned benefits for residents and the wider community.
Assessing the promises made about new cities from scratch requires a critical evaluation of their potential benefits and potential concerns. While these cities hold the promise of addressing existing urban challenges, there are several aspects to consider:
Promises:
Urban Planning: New cities from scratch provide an opportunity for deliberate urban planning, allowing for the creation of well-designed and efficient infrastructure, transportation systems, and public spaces. This can lead to improved quality of life and a more sustainable environment.
Innovation and Technology: Many new cities aim to leverage advanced technologies and smart solutions to create efficient, connected, and sustainable urban environments. This includes the integration of renewable energy, smart grids, intelligent transportation systems, and data-driven management.
Social Equity: Scratch cities often promise to address social issues such as poverty and inequality. They may offer affordable housing, access to quality education and healthcare, and inclusive community spaces, aiming to create more equitable societies.
Economic Opportunities: New cities can attract investments, industries, and businesses, potentially creating new job opportunities and economic growth. They may offer a favorable environment for innovation, entrepreneurship, and the development of new industries.
Concerns:
Realization Challenges: Implementing a new city from scratch involves complex and long-term processes. Delays, budget overruns, and changing political priorities can hinder the realization of promised benefits, leaving residents and stakeholders disappointed.
Social Displacement: The creation of new cities may involve displacing existing communities or disrupting established social networks. This raises concerns about the potential marginalization of vulnerable populations and the loss of cultural heritage.
Sustainability and Environmental Impact: While new cities often aim to be sustainable, the actual environmental impact depends on factors such as resource consumption, waste management, and carbon emissions. The ecological footprint of construction, transportation, and ongoing operations must be carefully considered.
Affordability and Accessibility: Ensuring affordable housing, inclusive amenities, and accessible public services in new cities is crucial for addressing social equity. High costs, exclusionary practices, or limited accessibility can lead to socioeconomic disparities and exclusion.
Long-Term Viability: The long-term viability of new cities depends on various factors such as economic diversification, governance structures, citizen engagement, and adaptability to changing social, economic, and environmental conditions. Failure to anticipate and address these challenges can impact the sustainability and success of the new city.
Assessing the promises made about scratch cities requires a comprehensive evaluation of these factors, considering the specific context, governance frameworks, stakeholder engagement, and long-term planning. It is essential to carefully balance the potential benefits with the concerns to ensure the development of successful and inclusive new cities.
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technician A says that many port fuel-injection systems on four-cylinder engines use a simultaneous firing of injectors. Technician B says that sequential fuel injectors are timed and pulsed individually, much like the spark plugs are sequentially operated in firing order of the engine. Who is correct
In the two scenario above concerning port fuel-injection and sequential fuel injectors, only Technician b is correct.
How many injectors can be found in a 4 cylinder?A vehicle often has one fuel injector per cylinder and if one has a four-cylinder car, it would also have four fuel injectors.
Note that Fuel-pressure regulators that are found on a port fuel-injected systems is one that often work with injector pressures that is said to be of 30 to 55 PSI.
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What is RACE fire safety?
Answer:
Remove, Alarm, Confine and Extinguish or Evacuate
Explanation:
This easy to remember acronym is our University procedure in the case of a fire. Particularly in the hospital, every staff member is trained to recognize and respond appropriately in the case of a fire using this term.
A strip footing of width 3 m is founded at a depth of 2 m below the ground surface in a (c – 0) soil having a cohesion c = 30 kN/m2 and angle of shearing resistance 0 = 35°. The water table is at a depth of 5 m below ground level. The moist weight of soil above the water table is 17.25 kN/m3. Determine the find ultimate bearing capacity of the soil.
Using Terzagi's Equation as shown in the attachement;
Qa = 4225 kN/m
As per the given data, the ultimate bearing capacity of the soil is 313 kN/\(m^2\)
What is bearing capacity?Bearing capacity is the capacity of soil to support loads applied to the ground in geotechnical engineering.
To determine the ultimate bearing capacity of the soil, we can use the following formula:
q_ult = cN_c + 0.5γ*(BN_q + 0.4N_g*(B - B_f)*N_q)
To find the values of N_c, N_q, and N_g, we can use the following equations:
N_c = [cot(0) + tan(φ)][1 + 0.2(B_f/D)][(N_q/N_c) - 1][(N_q/N_c) - 2]
N_q = [(1 + sin(0))(1 - sin(0))][(N_q/N_c) - 1]
N_g = 0.5*(N_q - 1)*tan^2(φ)
Using the above equations, we can calculate the values of N_c, N_q, and N_g as follows:
N_c = [cot(35°) + tan(35°)][1 + 0.2(3/2)][(2.45/N_c) - 1][(2.45/N_c) - 2] ≈ 11.5
N_q = [(1 + sin(35°))(1 - sin(35°))][(2.45/N_c) - 1] ≈ 10.5
N_g = 0.5*(10.5 - 1)*\(tan^2\)(35°) ≈ 2.6
Substituting these values into the formula for q_ult, we get:
q_ult = 3011.5 + 0.517.25*(310.5 + 0.42.6*(3 - 3)*10.5) ≈ 313 kN/m^2
Therefore, the ultimate bearing capacity of the soil is approximately 313 kN/m^2.
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Soils with low percolation rates do not need special attention during site engineering. select one: true false
It is accurate to say that site engineering does not require particular consideration for soils with low percolation rates.
What are percolation rates?The rate at which water percolates through the soil is a measure of its ability to absorb and treat effluent, or wastewater that has undergone preliminary treatment in a septic tank. Minutes per inch are used to measure percolation rate (mpi). The process of a liquid gently moving through a filter is called percolation. This is how coffee is typically brewed. The Latin verb percolare, which meaning "to strain through," is the source of the word "percolation." When liquid is strained through a filter, such as when making coffee, percolation occurs.To learn more about percolation rates, refer to:
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Create an array of 10 size and assign 10 random numbers. Now find the sum of the array using for and while loop.
Answer:
10
Explanation:
People tend to self-disclose to others that are in age, social status, religion, and personality.
Answer:people tend to do this when they are in a different environment they lose something or just have something going on in their life
Explanation:
An engineer places a small sample of a material on a horizontal disk whose surface is made of another material and then rotates the disk from rest with a constant angular acceleration of 4 rad/s2. Assuming that the coefficient of static friction between the sample and disk is 0. 2, what is the angular velocity of the disk at the time instant when the sample starts slipping on the disk?.
The critical value of the angular velocity obtained just before the slipping starts is the answer to this question and it is \(\bold{\omega = \sqrt{\frac{\mu.g}{r}}}\).
Let's consider the sample to be a point object.There are 2 forces acting upon the sample when it is on the plane and rotating: the normal force from the plane and the friction force directed to the centre of the rotating axis.This friction force provides the centripetal force needed to continue the rotation on the disk keeping itself at rest on the disk relative to it.The reason for a slip is due to the lacking of this friction so that it is no longer capable of providing the required amount of centripetal force in the form of friction.The maximum friction is simply \(f_{max} = \mu_s.R\) where \(R\) is the normal force on the sample and \(\mu_s\) the coefficient of static friction. By the vertical equilibrium \(R = mg\) and that gives \(f_{max} = \mu_s. mg\)The proper condition to continue the rotation without slipping is as follows and the critical value of angular velocity can be found from it.
\(\begin{aligned}\\\\F &= ma\\\\f_{max} &\geq ma\\\\ \mu_s.mg &\geq m.r\omega^2\\\\\omega &\leq \sqrt{\frac{\mu_sg}{r}}\\\\\omega_{critical} &= \sqrt{\frac{\mu_sg}{r}}\end{aligned}\)
The critical angular velocity depends only on these parameters and for a given system it is dependent on where it is primarily placed from the centre of rotation (this question lacks this piece of data by the way).So this is the answer to this question and with the data for the constant angular acceleration, you can calculate how long it would take from the startup or how many rotations it would take until the point of slipping.For that, you can employ the formulae \(\omega = \omega_0+\alpha.\Delta t\) and \(\omega^2 = \omega^2_0+2\alpha .\Delta \theta\) respectively by putting \(\omega = \omega_{critical}\).#SPJ4
The space between two square flat parallel plate is filled with oil. Each side of
the plate is 600mm. The thickness of the oil films is 12.5mm. The upper
plate, which moves at 2.5m /s, requires a force of 98.1 N to maintain the
speed. Determine
I.The dynamic viscosity of the oil in poise.
Ii.The kinematic viscosity of the oil in strokes if the specific gravity of the oil
is 0.95
The dynamic viscosity of the oil in poise is 13.625 pois
The kinematic viscosity of the oil in strokes is 14.34
How to solve for the dynamic viscosityF viscous is given as n* ΔFr / Δy
where n = F * Δy / A * ΔVn
We have to define the terms of the formula
Δy = 12.5 x 10⁻³
ΔVr = 2.5m /s
A = 60 x 60 cm² = 0.36m
F = 98.1 n
We have to put the values in the formula
98.1 n * 12.5 x 10⁻³ / 0.36m * 2.5m /s
n = 1.3625 ns / m²
The kinematic viscosity of the oil in strokes if the specific gravity of the oil is 0.95
y = n / e
n = 1.3625
e = 0.95 x 10³
y = 1.3625 / 0.95 x 10³
= 1.434 x 10⁻³
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Un buque de 500ton de desplazamiento tiene un KG de 5m y un KM de 7.5, la embarcación recibe un carga de 700ton con un KG de 4m. Calcule la cantidad de carga que puede llevar para que el buque navegue con un GM positivo de 0.3 y proponga la posición del centro de gravedad de la carga.
Answer:
500 kG con 0 .3Explanation:
700 gramosTwo added to four times a number, minus 3 times the number, equals 5.
x= 3.
Explanation:What is presented in this problem is basically an equation in verbal form.
1. Write the equation.
\(2+4x-3x=5\)
2. Solve for x.\(2+4x-3x=5\\ \\2+x=5\\ \\x=5-2\\ \\x=3\)
3. Express the result.x= 3.
A part made from 1040 hot-rolled steel is to be heat treated to increase its strength to approximately 107 kpsi. What Brinell hardness number should be expected from the heat-treated part? The Brinell hardness number for the heat-treated part is
The expected Brinell hardness number for the heat-treated part made from 1040 hot-rolled steel should be approximately 31.01 BHN.
How to calculate the valueThe Brinell hardness number (BHN) is a measure of a material's resistance to indentation. While there is no direct conversion between tensile strength and Brinell hardness, a general correlation can be used to estimate the expected BHN.
Tensile Strength (ksi) = 3.45 × Brinell Hardness Number (BHN)
In order to find the Brinell hardness number, we rearrange the equation:
BHN = Tensile Strength (ksi) / 3.45
Substituting the given tensile strength of 107 kpsi into the equation:
BHN = 107 kpsi / 3.45 ≈ 31.01
Therefore, the expected Brinell hardness number for the heat-treated part made from 1040 hot-rolled steel should be approximately 31.01 BHN.
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A 1.78-m3 rigid tank contains steam at 220°C. One-third of the volume is in the liquid phase and the rest is in the vapor form. The properties of steam at 220°C are given as follows: vf = 0.001190 m3/kg and vg = 0.08609 m3/kg.
determine the density
The tank has a total volume of 1.78 m3, of which one third is in the liquid phase, and the remaining two thirds are in the vapour phase. The system has a density of 287.6 kg/m3.
Describe density.Density is the measurement of how tightly a substance is packed. It has such definition since it is the mass per unit volume. The density symbol is D, and the density formula is The formula is: = m/V when is the density, m is the object's mass, and V is its volume.
Volume of vapor = (2/3) x 1.78 = 1.1867 m^3
Volume of liquid = (1/3) x 1.78 = 0.5933 m^3
To determine the density, we need to find the mass of the vapor and the mass of the liquid..
Mass of vapor = Volume of vapor / Specific volume of vapor = 1.1867 m^3 / 0.08609 m^3/kg = 13.785 kg
Mass of liquid = Volume of liquid / Specific volume of liquid = 0.5933 m^3 / 0.001190 m^3/kg = 498.3 kg
The total mass of the system is the sum of the mass of the vapor and the mass of the liquid:
Total mass = Mass of vapor + Mass of liquid = 13.785 kg + 498.3 kg = 512.085 kg
Finally, we can calculate the density using the total mass and the total volume of the system:
Density = Total mass / Total volume = 512.085 kg / 1.78 m^3 = 287.6 kg/m^3
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Assume that a variable named plist refers to a list with 12 elements, each of which is an int. Assume that the variable k refers to a value between 0 and 6. Write a statement that assigns 15 to the list element whose index is k.
Assuming plist is a list with 12 elements and k is a value between 0 and 6, you can assign the value 15 to the list element at index k by using the following statement: plist[k] = 15.
In programming, a list is a data structure that allows you to store a collection of values or items in a single variable. Lists are usually ordered, meaning that the items are stored in a specific sequence. They can also be mutable, which means that you can add, remove, or modify items in the list. Lists are commonly used in programming for tasks such as storing user input, iterating over a sequence of values, or implementing algorithms. Different programming languages have their own syntax and built-in functions for working with lists. Some examples of programming languages that support lists include Python, Java, JavaScript, and C++.
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A variable p2age has been defined as a pointer to integer. Write a line which will print the value of the integer referred to by p2age. C language.
A line of code which will print the value of the integer referred to by p2age. C language is printf("%d", *p2age).
To print the value of the integer referred to by p2age, you can use the dereference operator (*) in C language. Here's the line of code you can use:
printf("%d", *p2age);
The %d format specifier in the printf function is used to print an integer value. The *p2age expression dereferences the pointer p2age to get the value of the integer it points to. So, the combination of the two in the printf statement will print the value of the integer referred to by p2age.
It's important to note that the pointer p2age must be initialized before it can be dereferenced. Otherwise, it will cause a segmentation fault error at runtime. So, make sure to assign a valid memory location to p2age before using the above line of code to print its value.
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The process of designing green buildings is called Design
Explanation:
Also known as sustainable design, this approach integrates the building life-cycle with each green practice employed with a design-purpose to create a synergy among the practices used. ... The essence of green building is an optimization of one or more of these principles.
Mr. auric goldfinger, criminal mastermind, intends to smuggle several tons of gold across international borders by disguising it as lumps of iron ore. he commands his engineer minions to form the gold into little spheres with a diameter of exactly and paint them black. however, his chief engineer points out that customs officials will surely notice the unusual weight of the "iron ore" if the balls are made of solid gold (density ). he suggests forming the gold into hollow balls instead (see sketch at right), so that the fake "iron ore" has the same density as real iron ore one of the balls of fake "iron ore," sliced in half. calculate the required thickness of the walls of each hollow lump of "iron ore." be sure your answer has a unit symbol, if necessary, and round it to significant digits.
Answer:
The thickness of the walls of each hollow lump of "iron ore" is 2.2 cm
Explanation:
Here we have that the density of solid gold = 19.3 g/cm³
Density of real iron ore = 5.15 g/cm³
Diameter of sphere of gold = 4 cm
Therefore, volume of sphere = 4/3·π·r³ = 4/3×π×2³ = 33.5 cm³
Mass of equivalent iron = Density of iron × Volume of iron = 5.15 × 33.5
Mass of equivalent iron = 172.6 cm³
∴ Mass of gold per lump = Mass of equivalent iron = 172.6 cm³
Volume of gold per lump = Mass of gold per lump/(Density of the gold)
Volume of gold per lump = 172.6/19.3 = 8.94 cm³
Since the gold is formed into hollow spheres, we have;
Let the radius of the hollow sphere = a
Therefore;
Total volume of the hollow gold sphere = Volume of gold per lump - void sphere of radius, a
Therefore;
\(33.5 = 8.94 - \frac{4}{3} \times \pi \times a^3\)
\(\frac{4}{3} \times \pi \times a^3 = 33.5 - 8.94\)
\(a^3 = \frac{24.6}{\frac{3}{4} \pi } = 5.9\)
a = ∛5.9 = 1.8
The thickness of the walls of each hollow lump of "iron ore" = r - a = 4 - 1.8 = 2.2 cm.
Craftspeople saw their jobs disappear with the advent of manufacturing. Today, some manufacturing jobs are disappearing in favor of digital
solutions. What parallel can you draw between these two phenomena?
O A. Solving problems with technology can create other problems in society.
O B.
The economy calls for innovations that will force all of its sectors to grow.
O C. Engineering, will allow for re-training of workers who have lost jobs.
O D. Costs of manufacturing and digital solutions are proportionally similar.
Reset
Next
Solving problems with technology can create other problems in society, as job displacement is a common consequence. Therefore, the correct option is (O A) Solving problems with technology can create other problems in society.
A parallel that can be drawn between the disappearance of craftspeople's jobs with the advent of manufacturing and the current trend of manufacturing jobs being replaced by digital solutions is that both phenomena involve the displacement of workers due to technological advancements.
In both cases, the introduction of new technologies and methods of production has resulted in a shift in the job market and the need for different skill sets.
This can lead to job loss and economic challenges for those affected.
Additionally, both situations highlight the importance of adapting and retraining workers to meet the demands of the evolving economy.
While the specific technologies and industries involved may differ, the underlying theme of technological progress impacting the workforce remains consistent.
Therefore, the correct option is (O A) Solving problems with technology can create other problems in society.
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What’s the four-letter type of adapter that’s used with electrical devices that require power but do not contain internal components to derive the required voltage and power from mains power?.
The four-letter type of adapter are B, C, D and M that’s used with electrical devices that require power.
What is adapter ?A device that converts characteristics of one electrical system or device to those of another that is otherwise incompatible is known as an adapter or adaptor.
Some simply adapt the physical design of one connector to another, while others change the power or signal attributes.
A host controller connects a computer to a peripheral item, such as a network, storage, or human interface item. A host controller is sometimes known as a host bus adaptor because it may be thought of as bridging the protocols used on the buses between peripheral and computer and internally to the computer.
A peripheral device can be connected to a separate jack on a computer using an adapter. They are frequently used to link legacy devices to modern ports or modern devices to legacy ports on older systems. Such adapters may have active circuitry or be fully passive.
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Self-check-2 Test-I: Choose Instruction: For the Following Questions You Are Given Four Alternatives Then Choose the Correct Answer and circle 1, To be trouble shooter one must be a knowledge of A, tools needed B, basic electronic/electrical component C, basic electronic/electrical ckt analysis D, all of the above 2, Advising customers depend on (3 pt) A, how to safe from accidents B, how to use equipment's C, how to safe the equipment's roomfuls D, When/how to clean the equipment's E. all 3. Make an initial inspection/ testing of the appliance. (3 pt each) A. Physical appearance B, Operating controls C. Power cord. D. all Test-II: Say true or false. 1, Troubleshooting is used in many fields such as engineering, system administration, electronics, automotive repair, and diagnostic medicine. 2, write basic steps of Troubleshooting. 3, Hot Test is the test performing with power source. 4, which one is the method to identifying non-functional tools and equipment. Test III: short Answer writing 1. Write Types of testing? 2. Write down Basic steps of Troubleshooting? 3. Write down analog testing instruments?
The steel bracket is used to connect the ends of two cables. if the allowable normal stress for the steel is sallow = 30 ksi, determine the largest tensile force p that can be applied to the cables. assume the bracket is a rod having a diameter of 1.5 in.
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
The static equilibrium is given as:
F = P (Normal force)
Formula for moment at section
M = P(4 + 1.5/2)
= 4.75p
Solve for the cross sectional area
Area = \(\frac{\pi d^{2} }{4}\)
d = 1.5
\(\frac{\pi *1.5^{2} }{4}\)
= 1.767 inches²
Solve for inertia
\(\frac{\pi *0.75^4}{4}\)
= 0.2485inches⁴
Solve for the tensile force from here
\(\frac{F}{A} +\frac{Mc}{I}\)
30x10³ = \(\frac{P}{1.767} +\frac{4.75p*0.75}{0.2485} \\\\\)
30000 = 14.902 p
divide through by 14.902
2013.15 = P
The largest tensile force that can be applied to the cables given a rod with diameter 1.5 is 2013.15lb
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(a) Calculate the heat flux through a sheet of steel that is 10 mm thick when the temperatures oneither side of the sheet are held constant at 300oC and 100oC, respectively.(b) Determine the heat loss per hour if the cross-sectional area of the sheet is 0.25 m2.(c) What will be the heat loss per hour if a sheet of soda-lime glass is used instead
Answer:
do the wam wam
Explanation:
The heat flux is =1038kW/m² , the heat lost per hour is =259.5 kW, the heat lost per hour using a sheet of soda- lime glass.
Calculation of heat fluxThe thickness of steel( t) = 10mm = 10× 10^-³m
The temperature difference on both sides = 300-100
∆T = 200°C
But the formula for heat flux = q = k∆T/t
Where K = thermal conductivity for steel = 51.9W/mK.
Substitute the variables into the formula for heat flux;
q = 51.9 × 200/10 × 10-³
q = 10380 × 10³/10
q = 10380000/10
q = 1038000 W/m² = 1038kW/m²
To calculate the heat lost per hour if the cross sectional area is = 0.25 m2 use the formula q × A
= 1038kW/m² × 0.25 m2
= 259.5 kW.
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Problem 3.25 Use the appropriate expression for the differential surface area ds to determine the area of each of the following surfaces: (a) r = 3; 0 < 3; -23:32, (b) 2
(a) Area = ∫ -π/2 to π/2 6πdθdθ = 12π
(b) Area = ∫ 0 to 2π 4θdrdθ = 8π
What is surface area
Surface area is the total area of the outside of a three-dimensional object. It is the sum of the areas of all its faces, including any curved surfaces. In calculating the surface area of an object, the area of any curved faces must be approximated using methods such as calculus. Surface area can be used to calculate the volume of an object by multiplying it by its thickness. It is also used to measure the amount of paint, clay, or other material needed to cover the surface. Surface area is an important factor in engineering, architecture, and other sciences. It is also used in everyday life, such as when calculating the amount of wrapping paper needed to cover a gift box.
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Which of the following statements best describes the first priority of public works during the initial response?
The statement that best describes the first priority of public works during the initial response is: B. Provide an initial assessment of the damages to all community services
How to describe public works?Public works are defined as a broad category of infrastructure projects, that are financed and constructed by the government, for recreational, employment, and health and safety uses in the greater community.
They include works (such as schools, highways, docks) constructed for public use or enjoyment especially when financed and owned by the government.
Looking at the given options, the one that best describes the first priority of public works is Option B
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The missing options are:
A. Review reports and other data to provide a preliminary damage assessment
B. Provide an initial assessment of the damages to all community services
C. Restore solid waste management services, repair facilities, and clear streets
D. Assist with life safety activity by providing equipment and technical expertise
A venture tube is used to measure the flow rate of a liquid in a pipe (liquid density is 800 kg/m3). The pipe has a diameter of 10 cm and the smallest diameter of the venture has a diameter of 4 cm. A manometer with a manometer fluid of mercury (specific weight of 133 kN/m3) is used to calculate the flow rate which is connected to the venture section such that one leg is far upstream and the second leg is at the minimum diameter of the venture tube. If the flow rate is 0.05 m3/s determine the elevation change in the manometer fluid.
a. 14.6 m
b. 9.28 m
c. 4.64 m
d. 2.32 m
Answer:
\(\triangle h=4.935m\)
Explanation:
From the question we are told that:
Liquid density \(\rho=800\)
Diameter of pipe \(d=4cm \approx 0.004m\)
Diameter of venture \(d=10cm \approx 0.010m\)
Specific weight of mercury P_mg \(133 kN/m^3\)
Flow rate \(r=0.05 m^3/s\)
Area A:
\(A_1=\frac{\pi}{4}0.1^2\\A_1=0.00785m^2\\A_2=\frac{\pi}{4}0.04^2\\A_2=0.001256m^2\\\)
Generally the Bernoulli's equation is mathematically given by
\(\frac{P_1}{\rho_1g}+\frac{V_1^2}{2g}=\frac{P_2}{\rho g}+\frac{V_2^2}{2g}\\\)
Where
\(V_1=\frac{r}{A_1} \\\\ &V_1=\frac{r}{A_2}\)
Therefore
\(P_1-P_2=\frac{Pr^2}{2}(\frac{A_1^2-A_2^2}{A_1^2A_2^2})\)
Generally the equation for pressure difference b/w manometer fluid is given as
\(P_1-P_2=(p_mg-pg)\triangle h\)
Therefore
\((p_mg-pg)\triangle h=\frac{Pr^2}{2}(\frac{A_1^2-A_2^2}{A_1^2A_2^2})\)
\(\triangle h=\frac{\frac{Pr^2}{2}(\frac{A_1^2-A_2^2}{A_1^2A_2^2})}{(p_mg-pg)}\)
\(\triangle h=\frac{\frac{(800)(0.05)^2}{2}(\frac{(0.1)^2-(0.4)^2}{(0.1)^2(0.04)^2})}{(1.33*10^3-800*9.81)}\)
\(\triangle h=4.935m\)
Therefore elevation change is mathematically given by
\(\triangle h=4.935m\)
An adult has a total of about 22.3 square feet (ft2) of skin. Use the fact that 1 m is approximately equal to 3.281 feet to convert this measurement to square meters (m2).
Explanation:
1 meter ≈ 3.281 ft.
so,
1 m² = 1m×1m ≈ 3.281 × 3.281 = 10.764961 ft²
now we have 22.3 ft² of skin.
that would be then
22.3/10.764961 = 2.071535605 ≈ 2.1 m² or even more rounded ≈ 2 m²
Which one of the following answer options are your employers responsibility
Where are your answer options?
Answer:
Implement a hazard communication program
Explanation: i took the quiz
A motor enclosure that incorporates a separate motor-driven blower mounted on the enclosure is
O air-cooled.
nonventilated.
Opipe-ventilated.
O externally ventilated.
ventilated.
A motor enclosure that incorporates a separate motor-driven blower mounted on the enclosure is Ventilated.
What is motor enclosure?Motor enclosure is a protective box or housing that is used to protect electric motors and their components from dust, dirt, moisture, and other environmental elements. It is also used to prevent accidental contact with the moving parts of the motor. Motor enclosure is important in ensuring the safe operation of an electric motor and can help extend the life of the motor. The most common types of motor enclosures include open drip proof (ODP), totally enclosed fan cooled (TEFC), and totally enclosed non-ventilated (TENV). Depending on the environment and application, a different type of motor enclosure may be needed to ensure optimal performance and safety.
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A Triangular gutter, whose side include an angle of 60° conveys water at a uniform depth of 4m. If the slope of the bed is 1 in 1000. Find the the rate of water. Take Chezys constant,C=55.
Let x = depth of the gutter
then
18 - 2x = width of the gutter
Cross section area
A = depth x width
= x(18 - 2x)
A = 18x - 2x^2
Axis of symmetry will give x value for max area:
x = -b/(2a)
x = -18/(2x(-2))
x = 4.5 inches is the depth for max area
Max area: 4.5 * 9 = 40.5 sq/in
What is rectangle?It has been defined as two-dimensional geometry in which the angle between the adjacent sides has 90 degrees. It has the type of quadrilateral.
The perimeter of the rectangle is defined as the length of the circumference or outline of the geometry. It is the sum of all side measures.
Therefore, Axis of symmetry will give x value for max area:
x = -b/(2a)
x = -18/(2x(-2))
x = 4.5 inches is the depth for max area
Max area: 4.5 * 9 = 40.5 sq/in
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The force that keeps you from sliding on an icy
sidewalk is
Select one:
kinetic friction
normal force
weight
static friction
The force that keeps you from sliding on an icy sidewalk is static friction. Thus the correct option is D.
What is static friction?The friction that occurs when people attempt to move a stationary object across a surface without actually moving their bodies or the surface they are trying to move the object across is known as static friction.
Static friction prevents an object from slipping by keeping it at rest, therefore when you're walking on a sidewalk, this force is what prevents you from slipping on an icy sidewalk while walking.
The goal is to apply visual analytic techniques to calculate the static and kinetic friction coefficients between two surfaces and evaluate the movement between them.
Therefore, option D static friction is appropriate.
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