Buildings use resources and energy at a startling rate. We can improve. A foundation for green buildings that are healthful, effective, low-emission, and economical is provided by LEED.
The success of sustainability is symbolized by LEED certification, which is supported by an entire sector of dedicated businesses and individuals paving the path for market transformation. Buildings that are LEED certified enhance efficiency, cut carbon emissions, and make spaces that are healthier for people to live in. They are vital to combating climate change, achieving ESG objectives, boosting resilience, and promoting more equitable societies. A project must adhere to prerequisites and credits that cover carbon, energy, water, waste, transportation, materials, health, and indoor environmental quality in order to gain LEED certification.
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INSTRUCTIONS
Create a "starter" risk register for the two projects (A and B) described below. Include at least 6 risks for project A
Project A
Description
Building a garden shed. This includes the design of the shed, sourcing all the materials required for construction, and putting all of the various pieces together to get the finished shed.
Outcome
A finished garden shed.
Proposed Tasks
There are going to be certain tasks that depend on others. You’re going to need to:
Get a set of blueprints for the shed and clear and prepare the area for construction
Source all of the materials for the construction
Prepare the foundation and start constructing the beams of the floor
Lay the floorboards
Construct the frames of the walls and raise and fit each of them
Frame the roof and attach the roofing
Fit in all the siding for the walls
Fit in the windows and the doors
From this, it’s obvious that you won’t be able to start fitting the walls until the floor is in place or start work on the roof until walls have been raised.
Stakeholders
Besides yourself and those living in your home, your team can be neighbors, or friends. You’ll need to lead them and give them direction on the tasks you want them to do. Outside risks include bad weather or the hardware store not having certain items or being closed when you need it.
Timeline
For a project like this that is relatively simple, the timeline depends on how large your team is. With 10 people working on a garden shed, it could be finished in a matter of hours, but doing it alone may take 2-3 weekends of time.
A risk register is a log of all potential hazards, risks, and uncertainties that a project may encounter. It also has an explanation of the probability of the danger occurring and its potential impact.
A risk register's purpose is to assist in the identification, assessment, and management of risks associated with a project and is an essential part of a successful risk management strategy. As such, the risk register has six components, including the risk description, risk cause, impact, risk likelihood, risk impact, and risk ranking.The following are six potential hazards for Project A and their explanations:
1. Weather Issues: Bad weather can slow down the construction process, make it dangerous to work outside, or damage materials.
2. Availability of Materials: If materials are scarce, it can delay or halt the construction project.
3. Time Constraints: Limited time can result in project delays or cutting corners, which can impact the quality of work.
4. Cost Overruns: Unexpected or uncontrollable costs can result in the project being halted or completed poorly.
5. Inadequate or Faulty Tools: This can affect work quality, safety, and efficiency, ultimately impacting the project schedule and costs.
6. Safety Issues: Inadequate safety protocols can result in accidents that could lead to injury or death of workers on the site.In conclusion, the risk register for Project A should outline potential hazards, their causes, impact, likelihood, and ranking, as well as mitigation strategies. The risk register should be reviewed and updated regularly to ensure that new risks are identified and addressed.
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The pressure gage on a 2.5-m3 oxygen tank reads 500 kPa. Determine the amount of oxygen in the tank (mass in kg) if the temperature is 28°C and the atmospheric pressure is 97 kPa.
Answer:
\(n=5.36kg\)
Explanation:
From the question we are told that:
Volume \(V=2.5m^3\)
Pressure\(\rho=500Kpa\)
Temperature \(T=28^o\)
Atmospheric pressure \(\rho_{atm} =97 kPa.\)
Generally the equation for an Ideal gas is mathematically given by
\(PV=nRT\)
Therefore
\(n=\frac{500*2.5}{8.314*28}\)
\(n=5.36kg\)
(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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a rod consisting of two cylindrical portions ab and bc is restrained at both ends. portion ab ismade of steel, and portion bc is made of yellow brass. if the rod is initially unstressed, determine the compressive force induced in abc when there is a temperature rise of 50◦c
Given that the rod is initially in an unstressed state, finding the compressive force that is created in ABC as the temperature rises by 55°C yields a value of 156.902 kN.
Portion AB's size is 7.0695 X 10⁴ m².
BC portion's size is 1.96373 X 10³ meters.
505.725 X 106m for free thermal expansion is equal to (0.25)(11.7 X 106)(55) + (0.3)(20.9 X 106)(55).
Induced compressive force-induced shortening P= = 1.7682 X 10⁹ P + 1.455 10⁹ P = 3.2232 X 10⁹ P
3.2232 X 10⁹P = 505.725 X 10⁶ P = 156.902 X 103 N = 156.902 kN with zero net deflection.
As a result, ABC is subjected to a compressive force of 156.902 kN.
An action that seeks to preserve, modify, or deform a body's motion is called applying force.
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when air is cooled below its dew point without condensation, it is said to be
When air is cooled below its dew point without condensation, it is said to be at a state of supersaturation. At this state, the air can hold more moisture than it typically would at its temperature and pressure
The dew point is the temperature at which air becomes saturated with moisture, leading to the formation of dew or condensation. When air is cooled below its dew point, it can no longer hold all of the moisture it contains, and the excess moisture condenses to form dew or other forms of precipitation. However, if the air is cooled below its dew point without condensation occurring, it is said to be at a state of supersaturation.
At this state, the air can hold more moisture than it typically would at its temperature and pressure. Supersaturation can occur when air is cooled rapidly, preventing moisture from condensing out of the air before it reaches a state of supersaturation. This can occur in a variety of situations, such as when air is rapidly cooled in a cloud or when humid air is rapidly transported to a colder region.
While supersaturation can occur without condensation, it is an unstable state. Any small disturbance can cause the excess moisture to condense out of the air, releasing latent heat in the process. This can lead to the formation of clouds or other forms of precipitation, such as rain or snow.
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Find the current through a 5-H inductor if the voltage across it is
Also find the energy stored within 0 < t < 5s. Assume i(0)=0.3012 t〉0 v(t) ,
To find the current through the 5-H inductor, we can use the relationship between voltage and current in an inductor, which is given by:
v(t) = L(di/dt)
Where v(t) is the voltage across the inductor, L is the inductance in henries, and di/dt is the rate of change of current with respect to time. Rearranging this equation, we get:
di/dt = v(t)/L
We can integrate both sides of this equation with respect to time to obtain the current through the inductor as a function of time:
i(t) = (1/L) * ∫[0 to t] v(τ) dτ
Substituting the given voltage function, we get:
i(t) = (1/5) * ∫[0 to t] (0.3012τ) dτ
= (0.06024/5) * t^2
= 0.012048 * t^2
Therefore, the current through the inductor at time t is given by 0.012048*t^2 amperes.
To find the energy stored within the inductor, we can use the formula for the energy stored in an inductor, which is given by:
W = (1/2) * L * i^2
Substituting the expression for i(t) that we obtained earlier, we get:
W = (1/2) * 5 * (0.012048*t^2)^2
= 0.000361152 * t^4 joules
To find the energy stored within the inductor for the time interval 0 < t < 5s, we can substitute t = 5s in the above expression and subtract the energy stored at t = 0s:
W(0 to 5) = 0.000361152 * (5^4 - 0)
= 45.144 * 10^-3 joules
Therefore, the energy stored within the inductor for the time interval 0 < t < 5s is 45.144 millijoules.
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The effective resistance of parallel resistors is always _____ than the lowest individual value.
a) more
b) less
c) no different than
Answer:
A
Explanation:
Answer:
the answer is a
Explanation:
it is a because thats what the answer is
water from a reservoir passes over a dam through a turbine and discharges from a 70-cm id pipe at a point 55 m below the reservoir surface. the turbine delivers 0.80 mw. calculate the required flow rate of water in m3 /min if friction is neglected. if friction were included, would a higher or lower flow rate be required? (note: the equation you will solve in this problem has multiple roots. find a solution less than 2 m3 /s.)
The required flow rate of water can be calculated using the following formula:
Power = (Flow Rate) x (Acceleration due to Gravity) x (Height)
Here, Power = 0.80 MW, Acceleration due to Gravity = 9.81 m/s^2 and Height = 55 m.
So, Flow Rate = Power / (Acceleration due to Gravity x Height)
Substituting the given values, we get:
Flow Rate = 0.80 MW / (9.81 m/s^2 x 55 m) = 1.43 m^3/s
To convert this to m^3/min, we multiply by 60:
Flow Rate = 1.43 m^3/s x 60 = 85.8 m^3/min
If friction were included, a higher flow rate would be required because some of the energy of the water would be lost due to friction with the pipe walls, resulting in a lower overall efficiency of the system.
To calculate the required flow rate of water in m³/min, we'll use the following equation:
Power = (ρ * g * h * Q) / (60 * 1000)
Where:
Power = 0.80 MW (800 kW)
ρ = Density of water (1000 kg/m³)
g = Acceleration due to gravity (9.81 m/s²)
h = Height difference between the reservoir surface and the discharge point (55 m)
Q = Flow rate in m³/min
We need to solve for Q:
800,000 W = (1000 kg/m³ * 9.81 m/s² * 55 m * Q) / (60 * 1000)
800 = 9.81 * 55 * Q / 60
Now, we can solve for Q:
Q = (800 * 60) / (9.81 * 55)
Q ≈ 14.75 m³/min
So, the required flow rate of water is approximately 14.75 m³/min.If friction were included, a higher flow rate would be required. This is because some of the energy would be lost due to friction, resulting in a lower efficiency of the turbine. Consequently, to maintain the same power output, the flow rate must be increased to compensate for the energy loss.
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Plumbing
The should indicate the materials, fixtures, and faucets to be
used.
A. specifications
B. plumbing code
C. mechanical code
D. plumbing instructor
Answer:
B....................
Which contemporary jazz artist was one of the first to use a synthesizer in their recording
Answer:
In this era, Sun Ra was among the first of any musicians to make extensive and pioneering use of synthesizers and other various electronic keyboards; he was given a prototype Minimoog by its inventor, Robert Moog.
Explanation:
Considering how likely the risk is to affect the company’s profits is part of which component of risk management?
Risk identification
Risk assessment
Risk control
Risk mitigation
A 19,400-N weight is raised using a jackscrew having a pitch of 5.00 mm and a handle length of 255 mm. What force must be applied?
To calculate the force required to lift a weight, we need to determine the mechanical advantage provided by the jackscrew. The mechanical advantage can be calculated as the ratio of the handle length to the pitch of the screw.
How to calculate the force required to lift a weight?
In this case, the mechanical advantage is:
255 mm / 5.00 mm = 51
This means that for every 51 turns of the handle, the screw will raise the load by a distance equal to the pitch of the screw, or 5.00 mm.
Now that we have the mechanical advantage, we can calculate the required force as follows:
Force = Weight / Mechanical Advantage
Force = 19,400 N / 51
Force = 380 N
So, a force of 380 N must be applied to the handle of the jackscrew to lift the 19,400 N weight.
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Which statement best explains why pneumatic cylinders need to be smaller than hydraulic cylinders?
The pneumatic system only needs enough room to have an onloff switch installed in order to operate correctly.
The energy in pneumatic power systems is easily transmitted to gases, which absorb the energy of the system and lower its efficiency
The control of the hydraulic system is much more precise and therefore requires a larger cylinder.
The fluid in a hydraulic system has more mass and therefore needs more storage space.
Answer:
The energy in pneumatic power systems is easily transmitted to gases, which absorb the energy of the system and lower its efficiency.
Explanation:
I did it on edge and got it right.
Answer:
The energy in pneumatic power systems is easily transmitted to gases, which absorb the energy of the system and lower its efficiency
Thanks for points!!! :D
A machine has an efficiency of 15%. If the energy input is 300 joules, how much useful energy is generated?(1 point).
With an energy input of 300 J and an efficiency of 15%, the machine produces 45 J of useable energy.
What is energy?Energy is characterized as a quantitative characteristic that is transmitted to a person or a physical system and can be observed in the manner in which labor is accomplished as well as in the generation of heat and light. The sun is one of the most significant energy sources.
The machine's useful energy output, or work output, can be calculated as follows:
Efficiency = work out / work in x 100
0.15 = work out / 300
Multiply by cross
Production = 0.15 x 300
Production: 45 J
Thus, with an energy input of 300 J and an efficiency of 15%, the machine produces 45 J of useable energy.
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Are these hosts on the same network?
IP 1.7.255.254
IP 1.2.3.4
Subnet 255:248:0:0
true or false
They are hosts on the same network, it is true. Subnet 255:248:0:0, IP 1.7.255.254, IP 1.2.3.4
Identifying whether two hosts are on the same subnet is difficult?You will most frequently encounter the subnet 255.255.255.0. As a result, if two addresses match in the first three sections (reading from left to right), and both addresses have the subnet 255.255.255.0, they are in the same subnet.
In a subnet, what are hosts?The network address is represented by the first 24 bits (the subnet mask's number of ones). The host address is represented by the final 8 bits, or the number of zeros in the subnet mask. You are given the addresses listed below: Address for the network: 11000000.10101000.01111011.00000000 (192.168.123.0)
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in multi-grade oil what is W means?
Answer:
winter viscosity grades
Explanation:
The “W”/winter viscosity grades describe the oil's viscosity under cold temperature engine starting conditions. There's a Low Temperature Cranking Viscosity which sets a viscosity requirement at various low temperatures to ensure that the oil isn't too thick so that the starter motor can't crank the engine over.
In the formula shown, k is a correction factor for nonideal mixing. In the worst case, k is usually estimated to be:_______. Cppm = KMRT/KQVPM * 10^6 (Select the best answer and then click 'Submit.) a. 0b. 0.1c. 0.5d. 1.0
Answer:
d. 1.0
Explanation:
Correlation identifies the relationship between two variables. In the given scenario there is strong relation between non ideal mixing. The correction factor can be between -1 to 1 depending on the intensity of the relationship and dependency. The non ideal mixing efficiency is highly dependent on the factors that govern it this means there is high intensity relation so the k is estimated to be nearly 1.
What does limit comparison test tell us?
Answer:
The limit comparison test is a method used in calculus and real analysis to determine whether an infinite series converges or diverges.
The limit comparison test is based on the idea that if two series have the same behavior, meaning they both converge or both diverge, then their terms must be proportional to each other. Specifically, the limit comparison test states that if a given infinite series a_n has positive terms and the limit of the ratio of a_n and some other series b_n exists and is a finite positive number, then the two series have the same behavior.In other words, if the limit of a_n/b_n is a positive number L, then the series a_n converges if and only if the series b_n converges. If the limit of a_n/b_n is zero or infinity, then the series a_n and b_n have different behavior.
The limit comparison test is a useful tool for determining the convergence or divergence of a series that is difficult to evaluate directly. By comparing it with a known series that has a similar behavior, we can gain insight into whether the series converges or diverges.
Which of the following steps does core and shell development include according to the LEED project category of that name? (Select all that apply.)
HVAC and wiring installation
completed common areas
installation of audio/video equipment
installation of tenant-specific facilities
Answer:
HVAC and wiring installation
Completed common areas
Explanation:
Core and shell development includes the installation of HVAC and wiring, as well as the completion of common areas. It does not typically include the installation of audio/video equipment or tenant-specific facilities, which are typically part of the tenant improvement process.
deliverables: you must use functions and classes to modularize your work. you should use exception handling where necessary as well. 50 points off for programs that crash on expected input. store and cart: in this assignment you will use classes and inheritance to create an application where user will input name and location of store and will start his/her grocery shopping by adding them to the cart. classes you will have to implement two classes with methods and attributes to finish up this program. the methods given here have to be implemented, however, you can add extra methods or attributes as needed. store the store class will include the following: - constructor - two instances attribute (name and location). - one setter method: to set the name and the location. - display method: to output all information from store class (the name and the location of the store).
To complete the assignment, modularize your code using functions and classes. Utilize exception handling and implement two classes: "Store" with a constructor, setter method, and display method. Test your program thoroughly to avoid crashes and deductions in points.
To complete this assignment, you will need to use functions and classes to modularize your work. Additionally, you should utilize exception handling where necessary to ensure that your program does not crash on expected input. Failure to do so will result in a deduction of 50 points.
The main goal of this assignment is to create an application where the user can input the name and location of a store and then start their grocery shopping by adding items to a cart. To accomplish this, you will need to implement two classes with methods and attributes.
The first class you will need to implement is the "Store" class. This class should have a constructor that initializes two instance attributes: "name" and "location". Additionally, you should include a setter method that allows you to set the name and location of the store.
Lastly, you will need to implement a "display" method in the Store class. This method should output all the information from the Store class, including the name and location of the store.
Here is a step-by-step breakdown of what you need to do:
1. Define the Store class with the following attributes:
- name
- location
2. Implement a constructor in the Store class that takes the name and location as parameters and assigns them to the corresponding attributes.
3. Implement a setter method in the Store class that allows you to set the name and location of the store.
4. Implement a display method in the Store class that outputs all the information from the Store class, including the name and location of the store.
Remember, you have the flexibility to add extra methods or attributes as needed to complete the program successfully. Make sure to test your program thoroughly to ensure it functions as expected and does not crash on expected input.
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Q6. Ask for two numbers. If the first one is larger than the second, display the second number first and then the first number, otherwise show the first number first and then the second.
Answer:
Number1 = input("Choose a number: )
Number2 = input("Choose a second number: )
if number1 > number2:
print(number2\nnumber1)
else:
print(number1\nnumber2)
Explanation:
I'm assuming that you want it in python.
Drivers must be careful when driving close to cyclists and should keep at least ___ feet apart when passing cyclists on the road
Answer:
at least 8 feet
Explanation:
An ideal Otto cycle has a compression ratio of 7. At the beginning of the compression process, P1 = 90 kPa, T1 = 27°C, and V1 = 0.004 m3. The maximum cycle temperature is 1127°C. For each repetition of the cycle, calculate the heat rejection and the net work production. Also calculate the thermal efficiency and mean effective pressure for this cycle. Use constant specific heats at room temperature.
Answer:
i) Heat rejection = 1.0288 KJ
Network production = 1.212 kJ
ii) Thermal efficiency = 54.08%
mean effective pressure = 353.5 kPa
Explanation:
Given data :
Compression ratio ( r ) = 7
P1 ( initial pressure ) = 90 kPa,
T1 ( initial temperature ) = 27°C + 273 = 300 K
V1 = 0.004 m^3
Max cycle Temperature = 1127°C for each repetition of the cycle
i) Determine the heat rejection and net work production
considering that process 1-2 is an Isentropic compression
Find ; T2 = T1 ( r )^1.4-1
T2 = 300 ( 7 )^0.4 = 653.371 K
P2 = P1( r )^k
= 90 ( 7 )^1.4 = 1372.081 kPa
considering that process 3-4 is an Isentropic expansion
T4 = T3 / r^k-1
= 1400 / 7^(1.4 -1 ) = 642.82 K
Next ; Calculate the value of m
m = P1V1 / RT1 = 90(0.004) / 0.287 ( 300 )
m = 4.18 * 10^-3 kg
Finally :
amount of heat rejected = mCv ( T4 - T1 )
= 4.18 * 10^-3 ( 0.718 ) ( 642.82 - 300 )
Qout = 1.0288 KJ
amount of heat added ( Qin ) = mCv ( T3 - T2 )
= 4.18 * 10^-3 ( 0.718 ) ( 1400 - 653.371 )
hence Qin = 2.2408 kJ
Network production( Wnet) = Qin - Qout
= 2.2408 - 1.0288 ) KJ
= 1.212 kJ
ii) Determine the thermal efficiency and mean effective pressure of the cycle
Thermal efficiency = 1 - Qout / Qin
= 1 - ( 1.0288 / 2.2408 ) = 54.08%
mean effective pressure = Wnet / V1 ( 1 - 1/r )
= 1.212 / 0.004 ( 1 - 1/7 )
= 353.5 kPa
Explain why a hydraulic system would fail to be the best choice in the following scenario.
Henry is an engineer at Verizon. He is developing a tool that can burrow underground and shoot wires up to 50 feet along the yards of individual
houses. The tool needs to create the least amount of ground disturbance possible. He has decided to design a device that uses a hydraulic power
system
Answer:
The correct answer is that a hydraulic power system is used for large amounts of force.
Explanation:
A pneumatic power system would be much more effective at focusing on a specific area. One person would be able to hold a pneumatic system, as the design can be made small. It can even be designed with a simple on/off switch.
The hydraulic system would fail because hydraulic power system is used for large amounts of force.
What is the hydraulic system?Energy or signals are transported through the static or dynamic forces of liquids in hydraulic power transmission systems. These fluid power systems are a subset of them. The two types of fluid power are hydraulics and pneumatics. The valves aid in controlling the liquid's flow and relieving pressure when necessary.
Pumps are used in hydraulic systems to force hydraulic fluid through the system and generate fluid power. The fluid flows to the cylinder, where the hydraulic energy is converted back into mechanical energy, after passing through the valves.
Therefore, Due to the hydraulic system's need for high levels of force, it would malfunction.
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Insertion sort can be expressed as a recursive procedure as follows. In order to sort A[1…n], we recursively sort A[1…n−1] and then insert A[n] into the sorted array A[
1
n−1
]. Write a recurrence (T(n) as a function of input size n) for the running time of this recursive version of insertion sort.
In computer science, the recurrence relation is used to calculate the time complexity of a recursive function. Here, we are to write a recurrence relation for the running time of the recursive version of Insertion sort.
Insertion sort can be expressed as a recursive procedure as follows:In order to sort A[1…n], we recursively sort A[1…n−1] and then insert A[n] into the sorted array A[n−1].Algorithm to insert A[n] into the sorted array A[1..n-1]:1. Recursive call to sort A[1..n-1].2. Put the last element in the correct position by shifting the array. Let's denote the time taken by the function as T(n).The worst-case scenario happens when the input array is sorted in decreasing order. In this case, each time we enter the loop and slide an element to the right, we must compare it to each element in the sorted sub-array. Therefore, the time complexity of the insertion sort algorithm in the worst-case is O(n2). The recurrence relation for the running time of the recursive version of insertion sort is given by:T(n) = T(n-1) + nwhere n is the input size, T(n-1) represents the time taken by the function to sort n-1 elements, and n is the time taken to sort n elements.The base case for this recurrence is when there is only one element, i.e., T(1) = 1.The time complexity of insertion sort can be determined using the recurrence relation. So, T(n) is given by:T(n) = T(n-1) + n= T(n-2) + (n-1) + n= T(n-3) + (n-2) + (n-1) + n= ........= T(1) + 2 + 3 + ... + (n-1) + n= n(n+1)/2= O(n2)In conclusion, we can say that the time complexity of the recursive version of insertion sort is O(n2).
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trevor moves a magnetic toy train away from a magnet that cannot move. what happens to the potential energy in the system of magnets during the movement?
Answer:a
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The two main types of disc brake calipers are:
a. fixed and free
b. fixed and sliding.
c. free and sliding.
d. fixed and broken
Answer: b fixed and sliding
Explanation:
A gas turbine power station operates on the simple Brighton cycle using air as an operating barrier. Air enters the turbine at 1MPa and 1000K and exits from it at 125kPa and 600K, and heat is expelled to the surrounding environment at a time rate of 7922kJ/s. Air flows through the cycle at a time rate of 2.5kg/s. Assuming that the compressor is the isotropy find the net power produced by the station.
To determine the net power produced by the gas turbine power station, we need to calculate the work done by the turbine and the work done by the compressor. The net power produced is the difference between these two values.
The simple Brighton cycle consists of four processes:
Isentropic compression in the compressor.
Constant pressure heat addition in the combustion chamber.
Isentropic expansion in the turbine.
Constant pressure heat rejection to the surrounding environment.
Given data:
Inlet conditions:
Pressure at turbine inlet (P1) = 1 MPa
Temperature at turbine inlet (T1) = 1000 K
Exit conditions:
Pressure at turbine exit (P2) = 125 kPa
Temperature at turbine exit (T2) = 600 K
Heat expelled to the surrounding environment (Q_out) = 7922 kJ/s
Mass flow rate of air (m_dot) = 2.5 kg/s
First, let's calculate the specific enthalpy at state 1 (h1) using the air properties at the given temperature and pressure. You can refer to the air tables for this purpose.
Next, we need to calculate the specific enthalpy at state 2 (h2). We can use the temperature and pressure at state 2 and the air properties tables to determine h2.
Now, we can calculate the work done by the turbine (W_turbine) using the equation:
W_turbine = m_dot * (h1 - h2)
Since the compressor is assumed to be an isentropic process, the work done by the compressor (W_compressor) can be determined using the isentropic efficiency of the compressor (η_compressor) and the enthalpy difference between states 1 and 2:
W_compressor = (h2s - h1) / η_compressor
Where h2s is the specific enthalpy at state 2s, which can be determined using the temperature and pressure at state 2 and the air properties tables.
Finally, the net power produced (P_net) is given by:
P_net = W_turbine - W_compressor
Calculate the values using the above steps, and you will find the net power produced by the gas turbine power station.
Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit length) that the water exerts on the pier. Assume that the flow can be approximated as an potential fluid flow around the front half of the cylinder, but due to flow seperation, the average pressure on the rea half is constant and approximately equal to 1/2 the pressure at point A.
Answer: hello the diagram related to your question is missing please the third image is the missing part of the question
Fx = 977.76 Ib/ft
Explanation:
Estimate the force that water exerts on the pier
V = 12 ft/s
D( diameter ) = 6 ft
first express the force on the first half of the cylinder as
Fx1 = - \(-2\int\limits^\pi _\frac{\pi }{2} {Ps*cos\beta *a} \, d\beta\) ---------------- ( 1 )
where ; Fy = 0
Ps = Po + 1/2 Pv^2 ( 1 - 4 sin^2β ) ------------- ( 2 )
Input equation (2) into equation ( 1 ) (note : assuming Po = 0 )
attached below is the remaining part of the solution
when performing and completing a static governor adjustment on a mechanical governor system, what is the relative position of the flyweights attached to the governor gear compared to the governor cup shaft? what is the relative position of the governor cup compared to the governor shaft
During a static governor adjustment, the flyweights attached to the governor gear are in an inward position, closer to the governor cup shaft.
The flyweights move outwards from the governor gear, they increase the tension on the governor spring, which in turn affects the engine speed. By adjusting the governor spring tension with the flyweights in this position, the correct engine speed can be set.
When performing a static governor adjustment, the engine is usually at a standstill or operating at a low, idle speed. At this stage, the centrifugal force acting on the flyweights is minimal, causing them to move inward towards the governor cup shaft.
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