Why do shale, slate, and schist pose engineering hazards?
Answers
Shale, slate, and schist all pose engineering hazards because they are all sedimentary rocks that have a tendency to split or cleave along their layers or bedding planes.
This means that they are prone to collapse or failure when subjected to stress or pressure. Additionally, these rocks may contain natural defects or weaknesses that can further increase their susceptibility to failure. In an engineering context, these hazards can pose a risk to construction projects or infrastructure that rely on these rocks for support or stability, such as building foundations, roadways, or retaining walls.
It is important for engineers to carefully assess the geological characteristics of these rocks and design structures that can mitigate the potential hazards associated with their use.
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Related Questions
What is the role of static function and this pointer in C++?
Answers
A static function is a class member function that can be used even if a class object has not yet been initialized. Other than static variables, a static function is unable to access any of its class's variables. The object that calls the function is indicated by the 'this' reference.
Does this pointer exist in the static function?All nonstatic member function calls receive the "this" pointer as a secret parameter, and all nonstatic functions have access to it as a local variable inside their bodies. Static member functions don't have a "this" pointer because they can be invoked without an object (with class name).
What do these pointer and static functions do?A static function is a class member function that can be used even if a class object has not yet been initialized. Other than static variables, a static function is unable to access any of its class's variables. The object that calls the function is indicated by the 'this' reference.
What does this pointer do, please explain with an example?A pointer is a variable that contains the address of another variable. Pointer stores the address of a variable, as opposed to other variables that store data of a specific kind. For instance, an integer variable stores an integer value, whereas an integer pointer stores the address of an integer variable.
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(a) Design an algorithm to return the largest k items in an given list within O(n+ klogn) time. (b) Design an algorithm to return the number of connected subgraphs in a graph with in O(∣V∣+∣E∣) time. Note that you don't have to write pesudocode of the algorithm, and you can use any data structure or algorithm that we have discussed in this course.
Answers
(a) Algorithm to return the largest k items in a given list within O(n + klogn) time:
Create a max-heap data structure to store the elements of the list.
Insert all the elements from the list into the max-heap.
Perform k iterations, where in each iteration, do the following:
a. Extract the maximum element from the max-heap and store it in a result array.
b. Decrement k by 1.
Return the result array containing the largest k items.
By using a max-heap, we can efficiently retrieve the maximum element in O(1) time. Initially inserting all elements into the max-heap takes O(n) time. Each extraction of the maximum element takes O(logn) time, and we repeat this process k times. Therefore, the overall time complexity is O(n + klogn).
(b) Algorithm to return the number of connected subgraphs in a graph within O(|V| + |E|) time:
Initialize a count variable to 0 to keep track of the number of connected subgraphs.
Create a boolean array, visited[], of size |V| to mark visited vertices.
For each vertex v in the graph, do the following:
a. If visited[v] is false, increment the count variable by 1.
b. Perform a depth-first search (DFS) or breadth-first search (BFS) starting from vertex v.
c. Mark all visited vertices during the search.
Return the count variable, which represents the number of connected subgraphs in the graph.
We can use a standard graph traversal algorithm (DFS or BFS) to visit all connected vertices within a subgraph. By initializing the visited[] array and performing a search for each unvisited vertex, we can identify all the connected subgraphs in the graph. The time complexity of traversing all vertices and edges is O(|V| + |E|).
Note: The specific implementation details of DFS or BFS are not provided in this answer, but they are commonly used graph traversal algorithms.
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Question 2
Salt in crude oil must be removed before the oil undergoes processi
fed to a washing unit where fresh water fed to the unit mixes with t
the sal contained in the oil. The oil (containing salt but no water), be
can be removed at the top of the washer. If the "spent" wash water
oil contains 5% salt, determine the concentration of the salt in the w
crude oil (with salt) to water used is 4:1.
Answers
The concentration of the salt in the w crude oil (with salt) to water used is 4:1 is 0.0061.
What is crude oil?
Crude oil is a hydrocarbon mixture that exists in liquid form in natural subterranean reservoirs and stays liquid at atmospheric pressure after passing through surface separation facilities.
The salt content of "spent" wash water is 15%.
5% of crude oil is salt.
The crude oil (with salt) to water ratio utilised is 4: 1.
Crude oil fraction:
95% of crude oil = 0.95
0.95F1 = x1E1
0.95(100) = x1E1
95= x1E1
E1 = 95/X1
wash water fraction:
15% of wash water = 100% -15% = 85%
= F2 = 0.85E2
salts fraction:
0.05F1 = (1-X1)E1 + 0.15E2
0.05F1 = (1-X)95/X1 + 0.15(F2/0.85)
0.05F1 = 95/X1 - 95 + 0.15(F2/0.85) (SINCE = 95.588 = 95/X1 = 99.38)
0.05(100) = 95/X1 - 95 + 17.61(1/4F1)
5 = 95/X1 - 95 + 4.41
Fraction of salts = 1- X1 = 0.0061
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Tech a says that using a thicker head gasket would lower the compression ratio. tech b says that the effective compression ratio is affected by valve timing. who is correct?
Answers
Both Tech A and Tech B are partially correct, as both the thickness of the head gasket and the valve timing can impact the effective compression ratio, but in different ways.
Tech A is correct in stating that using a thicker head gasket would lower the compression ratio. The head gasket sits between the engine block and cylinder head, and its thickness affects the volume of the combustion chamber when the piston is at top dead center. A thicker head gasket increases the volume of the combustion chamber, reducing the compression ratio.
Tech B is also correct in stating that the effective compression ratio is affected by valve timing. The opening and closing of the intake and exhaust valves can influence the effective compression ratio. For example, if the intake valve closes earlier, it reduces the amount of air-fuel mixture entering the combustion chamber, effectively reducing the compression ratio.
In summary, both Tech A and Tech B have identified factors that can impact the effective compression ratio, but they are independent of each other.
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What current works best when the operator
encounters magnetic arc blow?
•DCEP
•ACEN
•CC
•AC
Answers
Answer:
AC
Explanation:
One situation when alternating current would work better than direct current is if the operator is encountering magnetic arc blow.
Current works best when the operator encounters magnetic arc blow is AC
Magnetic arc blow is simply defined as the arc deflection due to the warping of the magnetic field that is produced by electric arc current.
This is caused as a result of the following;
- if the material being welded has residual magnetism at an intolerable level
- When the weld root is being made, and the welding current is direct current which indicates constant direction and maintains constant polarity (either positive or negative).
Since it is caused by DC(Direct Current) which means constant polarity , it means the opposite will be better which is AC(alternating current) because it means that electricity direction will be switching to and fro and as such the polarity will also be revered in response to this back and forth switch manner.Thus, Current works best when the operator encounters magnetic arc blow is AC
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Provide counterexamples to the following statements. a. If a and b are integers where a| b and b a, then a-b. b. If? > 0 then n > 0. C. If n is an even number, then n2 + 1 is prime. d. If n is a positive integer, then n>n
Answers
a. Counterexample: a = 4, b = 8; a|b and b = a, but a-b = -4.
b. Counterexample: ? = -1 and n = 0; ? > 0, but n > 0 is false.
c. Counterexample: n = 4; n is an even number, but n2 + 1 = 17, which is not prime.
d. Counterexample: n = 0; n is a positive integer, but n = 0 and 0 > 0 + 1 is false.
What is Integer?
Integer is a data type used in programming to represent whole numbers. It is a numerical data type that can be positive, negative, or zero. Integers are the building blocks of programming, and they are often used in calculations and mathematical operations. Integer values cannot contain any fractional or decimal components. They can be represented in various formats, including hexadecimal, octal, decimal, and binary formats. Integer values are usually stored in a computer's memory as 32-bit or 64-bit words, depending on the system.
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raw sugar cane is taken into a process to create sugar, which is essentially sucrose. the raw cane is approximately 16% sucrose, 63% water, and the rest fiber by mass. juice from the cane is extracted by passing the cane through a series of crushers. about 5% extra mass of water is added to the sugar cane prior to this step to help in the extraction process. the crushed cane and liquid juice is sent to a filter press that creates a cake that contains 4% of the weight of the cane juice, which has a composition similar to the overall non-fiber content of the raw cane. the filtrate is sent to an evaporator where enough water is evaporated to obtain a pale yellow juice that is 41% water. a
Answers
The next step in the process is to crystallize the juice. The pale yellow juice is heated until the temperature reaches about 80°C, at which point the sucrose in the juice begins to form into crystals.
What is sucrose?
Sucrose is a type of sugar composed of glucose and fructose molecules bound together. It is a naturally occurring disaccharide found in many plants, where it serves as a form of energy storage. Sucrose is the most common sugar in the human diet and is used in a wide variety of food products. It is found in many processed foods and can be added to foods to enhance flavor. Sucrose is usually extracted from sugar cane or sugar beets, then processed into granulated sugar, which is used in baking or to sweeten drinks.
These crystals are then separated from the liquid in a centrifuge to produce raw sugar crystals. The remaining liquid, known as molasses, is then processed further to remove the remaining sucrose, creating a more viscous dark syrup. The raw sugar crystals are then washed and dried, and are ready to be packaged and sold as raw sugar.
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Legal metrology would protect consumers from businesses that do not take measurements according to defined measuring regulations.
Answers
From what my research concluded, true
Za answa iz:
True
Twust meh
When a ship arrives at a harbor, it is docking at one of six berths. If all six berths are occupied, the ship leaves the harbor immediately. After docking at a berth, the ship waits for the unloading service of a single crane. The crane unloads the ships in a First-In-First-Out discipline. After unloading, the ship leaves the harbor immediately. Define the system state at time t as [U(t),C(t)], where U(t)= number of ships waiting to be unloaded or being unloaded C(t)= number of busy cranes ( 0 or 1 ) Let [u,c] be the current state of the system. Define events and write the corresponding state transitions
Answers
The given problem describes a docking system of ships at a harbor. When a ship arrives at the harbor, it docks at one of six berths. If all six berths are occupied, the ship leaves the harbor immediately. After docking, the ship waits for the unloading service of a single crane. The crane unloads the ships in a First-In-First-Out discipline.
After unloading, the ship leaves the harbor immediately. The system state at time t is defined as [U(t),C(t)] where U(t) represents the number of ships waiting to be unloaded or being unloaded and C(t) represents the number of busy cranes (0 or 1). Let [u, c] be the current state of the system.
Now, the state transitions can be defined as follows:
Events:
1. A ship arrives at the harbor and all berths are occupied
2. A ship arrives at the harbor and some berths are empty
3. A crane becomes available
4. A ship finishes unloading and leaves the harbor
State transitions:
1. If [u, c] = [6, 1], the ship leaves the harbor immediately. The system state remains [6, 1].
2. If [u, c] = [6, 0], the ship leaves the harbor immediately. The system state remains [6, 0].
3. If [u, c] = [0, 0], the system state becomes [0, 1].
4. If [u, c] = [n, 0] (where n is less than 6), the system state becomes [n+1, 0].
5. If [u, c] = [n, 1] (where n is less than 6), the system state becomes [n, 1].
6. If [u, c] = [1, 1], the system state becomes [0, 1].
7. If [u, c] = [n, 1] (where n is greater than 1), the system state becomes [n-1, 1].
8. If [u, c] = [0, 1], the system state remains [0, 1].
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which statements about interiors and exteriors of the pyramid entrance at the louvre by i.m. pei and the metropolitan cathedral by oscar niemeyer are true?
Answers
The Pyramid Entrance at the Louvre by I.M. Pei has an interior made of glass and steel, while the exterior is made of glass panels and a steel framework while the Metropolitan Cathedral by Oscar Niemeyer has a circular shape, with a concrete exterior and stained glass windows.
The Metropolitan Cathedral by Oscar Niemeyer has a circular shape, with a concrete exterior and stained glass windows. The interior of the cathedral has a modern, minimalist design with a large central nave and seating for up to 5,000 people. Both structures have unique and modern designs that contrast with the classical architecture around them. The Louvre pyramid is a striking entrance that draws visitors into the museum, while the Metropolitan Cathedral is a landmark of modernist architecture in Brazil. The Pyramid entrance at the Louvre by I.M. Pei and the Metropolitan Cathedral by Oscar Niemeyer both feature unique and innovative designs. Both structures exhibit the architects' abilities to merge functionality and aesthetics, resulting in iconic architectural masterpieces.
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For one-family dwellings, the service disconnecting means must have a rating of at least ___ amperes, 3-wire.
Answers
The rating of the service disconnecting means for a single-family home must be at least 100 amperes, 3-wire.Therefore, 100 amperes is the required minimum rating of service size for a one-family home.
What is the service's required minimum ampere rating?
NEC 230.79 (C) states that the rating of the service disconnecting mechanism for a one-family residence must not be less than 100 amperes, 3-wire.Therefore, 100 amperes is the required minimum rating of service size for a one-family home. In one enclosure, six switches or circuit breakers.Since the 1937 edition of the NEC, the number of switches or sets of circuit breakers that can be utilized as the service disconnecting mechanism to separate a building's premises wiring from the utility provider's conductors can range from one to six. The combined ratings of the circuit breakers, if the disconnecting method consists of more than one switch or circuit breaker, must not be less than the calculated load as established by Art. The 98 amp load for the single-family home will be supplied by a 100 amp electrical service.100 x 83 percent equals 83 amps.The bare minimum service conductor is this one. A revision made to the 2020 NEC mandates that an emergency disconnect be used in accordance with section 230.85.This disconnect is meant to allow emergency personnel to turn off the electricity to the entire house before entering to deal with the situation. Any combination of the following is authorized for the two to six service disconnecting means:separate enclosures, each with a method to disconnect the main service.a main service disconnecting mechanism built inside each panel board enclosure. All primary conductors of transformers that are not grounded must be disconnected using a disconnect.Unless the location of the disconnect is clearly written on the transformer and the disconnect is lockable, as is depicted in the Figure, it must be placed within sight of the transformer.To learn more about ampere rating refer
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Use the following clues to help fill in the chart on the next page. Put an X in the spaces that are INCORRECT and Highlight the
CORRECT
1 The wizard with the lavender wand is in Ravenel or Sparrowan, and earned 50 or 60 points
2. Gorgonscale earned 10 points less than Sparrowman
3 Lynn scored 20 points less than the wizard with the incense wand.
4. Timmy scored 70 or 80 points. He is in Gorgonscale or Hydraden
5. Among Bennie and the wizard from Sparrowan, one earned 70 points and the other has the lavender wand.
6. The mandragore wand belongs to Edward or to the House of Hydraden
7 Ravenel didn't earn 60 points and Edward is not among it's wizards
8. Bennie scored 10 points more than Edward
9. The wizard with the mandragore wand didn't earn 70 points.
Answers
A well-hydrated human body is made up of about _______ percent water.
Answers
Answer:
70%
Explanation:
70%
Explanation:
A well-hydrated human body is made up of about 70% water :)
Hope that helps
which is a type of top-level domain? generic tld specific tld both generic tld and specific tld neither generic tld nor specific tld
Answers
TLDs play an important role in organizing and identifying websites on the internet, and understanding the different types of TLDs can help individuals and organizations choose the best domain name for their needs.
A top-level domain (TLD) is the last segment of a domain name, and it can be either generic or specific. Generic TLDs are used by a wide range of organizations and individuals, while specific TLDs are restricted to certain types of organizations or geographic regions. Examples of generic TLDs include .com, .org, and .net, while examples of specific TLDs include .edu, .gov, and .uk. Therefore, the answer to your question is "both generic TLD and specific TLD."
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How is electricity made from fossil fuels such as coal?.
Answers
Answer:
Coal or oil-fired power plants generate heat, which is then used to generate steam, which drives turbines that generate electricity.
I hope this helps you
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1. Which of these best describes a programming language?
a. A set of rules where symbols represent actions.
b. A set of spoken commands for a robot.
c. An action performed by a robot.
d.
A list of behaviors the robot already completed.
Answers
The phrase "system of rules where symbols represent actions" sums up programming languages the best.
What best describes a programming language?Symbols that represent actions are used in a computer language's set of rules. Programming languages are the set of instructions that a computer uses to carry out projects. A programming language is a vocabulary and a set of grammatical rules for telling a computer or other computing equipment to carry out particular tasks.
High-level languages such as BASIC, C, C++, COBOL, Java, FORTRAN, Ada, and Pascal are typically referred to as programming languages. instruction. The principles that specify how a language is structured are known as syntax. In computer programming, syntax refers to the rules that govern how words, punctuation, and symbols are organized in a programming language. To define algorithms or write programs to control a machine's behavior, programmers utilize programming languages.
Therefore the correct answer is option A ) A set of rules where symbols represent actions.
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prior to takeoff, the altimeter should be set to which altitude or altimeter setting?
Answers
Prior to takeoff, the altimeter should be set to the current altimeter setting or the local barometric pressure at the airport.
An altimeter is a device that measures altitude, the distance of a point above sea level. Altimeters are important navigation instruments for aircraft and spacecraft pilots who monitor their height above Earth's surface.
This ensures that the altimeter provides an accurate indication of the aircraft's altitude relative to sea level during the flight. The altimeter setting is typically obtained from the airport's weather report or air traffic control, and pilots adjust their altimeters accordingly before takeoff to ensure proper altitude reference.
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If an oncoming driver crosses into your path of travel, the space that is usually available for you to move your vehicle is.
Answers
Answer:
If an oncoming driver crosses into your path of travel, the space that is usually available for you to move your vehicle is to the right of your vehicle.
Explanation:
On many roads, there are areas on the sides of the road called the shoulder. The shoulder can be used for pulling over and stopping your vehicle due to emergencies.
If a driver crosses into your lane coming straight for you, the best thing to do is to pull over to the shoulder as fast as possible so to not turn left and hit incoming traffic.
Determine numerical values for each of the three mesh currents as labeled in
the circuit diagram of Fig. 4.58.
Answers
The numerical values for the mesh currents that we have in the question are given as:
1i = 0.9892 = 0.9892 amperei2 = 0.1501 amperei3 = 0.1570 ampereHow to solve for the values of the mesh currentWe first have to write the KVL
2 - 1(i₁ - i₂) + 3 - 5(i₁ - i₃) = 0
We have to expand the equation that we have above
2 - i₁ + i₂ + 3 - 5i₁ + 5i₃ = 0
take like terms
-i₁ - 5i₁ i₂ + 5i₃ = 5
= 6i₁ - i₂ - 5i₃ = 5
-1(i₂ - i₁) - 6 i₂ - 9(i₃ - i2) = 0
after expanding we would have
i₁ - 16i₂ + 9i₃ = 0------- equation 2
-5 (i3 - i1) - 3 - 9(i3 - i2) - 7i3 = 0
5i1 + 9i2 - 2i3 = 3 ------ equation 3
From the equations that we have in 1, 2 and 3, we would solve the system of equations to get
1i = 0.9892 = 0.9892 ampere
i2 = 0.1501 ampere
i3 = 0.1570 ampere
These are the mesh current that are in the labeled diagram.
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My Concrete Desk Has A Scratch How do I remove it like whenever I put something heavy it scratches ? I don't know what to do
Answers
Water flows steadily through the pipe as shown below, such that the pressure at section (1) and at section (2) are 300 kPa and 100 kPa respectively. Determine the diameter of the pipe at section (2), D, if the velocity at section (1) is 20 m/sec and viscous effects are negligible.
Answers
Answer:
The velocity at section is approximately 42.2 m/s
Explanation:
For the water flowing through the pipe, we have;
The pressure at section (1), P₁ = 300 kPa
The pressure at section (2), P₂ = 100 kPa
The diameter at section (1), D₁ = 0.1 m
The height of section (1) above section (2), D₂ = 50 m
The velocity at section (1), v₁ = 20 m/s
Let 'v₂' represent the velocity at section (2)
According to Bernoulli's equation, we have;
\(z_1 + \dfrac{P_1}{\rho \cdot g} + \dfrac{v^2_1}{2 \cdot g} = z_2 + \dfrac{P_2}{\rho \cdot g} + \dfrac{v^2_2}{2 \cdot g}\)
Where;
ρ = The density of water = 997 kg/m³
g = The acceleration due to gravity = 9.8 m/s²
z₁ = 50 m
z₂ = The reference = 0 m
By plugging in the values, we have;
\(50 \, m + \dfrac{300 \ kPa}{997 \, kg/m^3 \times 9.8 \, m/s^2} + \dfrac{(20 \, m/s)^2}{2 \times 9.8 \, m/s^2} = \dfrac{100 \ kPa}{997 \, kg/m^3 \times 9.8 \, m/s^2} + \dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)50 m + 30.704358 m + 20.4081633 m = 10.234786 m + \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)
50 m + 30.704358 m + 20.4081633 m - 10.234786 m = \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)
90.8777353 m = \(\dfrac{v_2^2}{2 \times 9.8 \, m/s^2}\)
v₂² = 2 × 9.8 m/s² × 90.8777353 m
v₂² = 1,781.20361 m²/s²
v₂ = √(1,781.20361 m²/s²) ≈ 42.204308 m/s
The velocity at section (2), v₂ ≈ 42.2 m/s
Name two common fuel gases that can be used for oxyfuel cutting
Answers
Acetylene and propane
I hope this help you!
When does work occur
Answers
Explain the difference between dimensioning standards for inches and the standards for millimeters
Answers
Dimensioning standards for inches and millimeters are used to specify the size and location of features on an object or part. The primary difference between these two standards is the unit of measurement used.
Inches are the primary unit of measurement in the United States, and dimensioning standards for inches are based on the imperial system of measurement. This system is based on units of inches, feet, and yards.
Dimensioning standards for inches typically use fractions of an inch, such as 1/8", 1/16", or 1/32", to specify dimensions. These fractions are commonly used because they are easy to measure with common tools like rulers and calipers.
On the other hand, millimeters are the primary unit of measurement in most other parts of the world, and dimensioning standards for millimeters are based on the metric system of measurement. This system is based on units of millimeters, centimeters, and meters.
Dimensioning standards for millimeters typically use decimals, such as 1.5 mm or 3.75 mm, to specify dimensions. Decimals are commonly used in the metric system because they allow for more precise measurements and are easier to work with in mathematical calculations.
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An electrical contractor employs 16 people. Five people earn $15 per hour, four people earn $17 per hour, and the remaining people earn $16 per hour. What is the total hourly wage earned by all 16 people
Answers
$255 per hour
Explanation:Total number of employed people = 16
(i) 5 people earn $15 per hour
That means that the total amount earned by those 5 is;
5 x $15 = $75 per hour
(ii) 4 people earn $17 per hour
That means that the total amount earned by those 4 is;
4 x $17 = $68 per hour
(iii) The remaining people earn $16 per hour.
There are 7 people remaining. i.e
16 - 5 - 4 = 7
That means that the total amount earned by those remaining (7) is;
7 x $16 = $112 per hour
The total hourly wage is therefore the sum of all the results in i, ii and iii. i.e
Total = $75 + $68 + $112
Total = $255
Therefore, the total hourly wage earned by all 16 people is $255
What safety concerns must be addressed before
welding on a large assembly outside of a welding
booth?
Answers
Answer:
the clothing you wear, what's in the air (gases), surrounding and weather
A square room has a floor area of 16 square meters. The height of the room is 5 meters.
Answers
There are four rooms totaling 54 square meters in size. A quadrilateral's interior angles are always equal to 360 degrees when added together.
What is a quadrilateral ?A closed polygon with four sides, four vertices, and four angles is known as a quadrilateral. By joining four non-collinear points, it is formed. A quadrilateral's interior angles are always equal to 360 degrees when added together.
The Latin words "Quadra," which means "four," and "Latus," which means "sides," are the source of the term "quadrilateral." A quadrilateral's four sides need not all be the same length to be a square. As a result, we can create a variety of types of quadrilaterals based on their angles and sides.
How big is the entire area?At 90 degrees, the diagonals divide each other.
The area of the four rooms is 54 square meters, or the area of one room divided by four.
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Which of the following techniques applied to the NMOS sleep transistor can give the least delay (performance) penalty by the MTCMOS technique in the active mode:
Select one:
a.
Forward body bias and gate underdrive
b.
Reverse body bias and gate overdrive
c.
Reverse body bias and gate underdrive
d.
Forward body bias and gate overdrive
e.
Zero body bias and gate overdrive
Answers
The correct option is (a) Forward body bias and gate underdrive. It is known that MOS transistors consume a substantial amount of static power even when they are in the off-state.
Among these techniques, MTCMOS has been widely adopted because of its simplicity and effectiveness.MTCMOS employs multiple power rails and switchable body-biased transistors to selectively isolate power-gated blocks. The technique reduces static power consumption while preserving good circuit performance by using a negative voltage to bias the body terminals of power-gated blocks to enhance their off-state leakage currents. However, the negative body bias can also cause degradation of the delay performance of neighboring blocks.
The sleep transistor technique is based on switching off transistors in a noncritical path by applying a voltage to the gate of the NMOS transistor. The voltage makes the threshold voltage of the transistor large, turning it off when a logic low signal appears at the control input.The MTCMOS technique can cause a delay penalty when used to power down power-gated blocks. This penalty is due to the increased parasitic capacitance and delay degradation caused by negative body bias.
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a) State and explain four scopes of challenges in translating the theory of sustainable development into engineering practice b) In planning the site layout for a construction site, knowledge about the site and its activities can be obtained from several sources. Please discuss all the knowledges that can be acquired from the local authorities. c) Explain the important of considering the aspect of sustainable components i.e., economy, environment and social in the process of selecting the plants and machineries in construction project
Answers
a) The scope of challenges in translating the theory of sustainable development into engineering practice are as follows:1. Meeting the Sustainability Standards and Metrics Engineering practitioners are challenged to design and build structures that fulfill sustainability metrics while still meeting specific standards.2. Incorporating Energy and Carbon Reduction Measures
One of the main challenges of sustainable engineering practice is incorporating energy and carbon reduction measures to minimize carbon emissions.3. Identifying Sustainable Resources Engineering practitioners are challenged to utilize sustainable resources in their projects. Sustainable resources in construction include recycled materials, renewable energy sources, and construction materials that generate low carbon emissions.
4. Encouraging Sustainable Construction Practices Sustainable construction practices must be implemented in the design process and throughout the construction phase to ensure the project meets the sustainability objectives.
b) Planning the site layout for a construction site involves gathering information about the site and its activities. The following are the sources of knowledge that can be acquired from local authorities when planning the site layout:1. Geographical maps and data
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In order to fill a tank of 1000 liter volume to a pressure of 10 atm at 298K, an 11.5Kg of the gas is required. How many moles of the gas are present in the tank? What is the molecular weight of the gas? Assuming that the gas to be a pure element can you identify it?
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Answer:
The molecular weight will be "28.12 g/mol".
Explanation:
The given values are:
Pressure,
P = 10 atm
= \(10\times 101325 \ Pa\)
= \(1013250 \ Pa\)
Temperature,
T = 298 K
Mass,
m = 11.5 Kg
Volume,
V = 1000 r
= \(1 \ m^3\)
R = 8.3145 J/mol K
Now,
By using the ideal gas law, we get
⇒ \(PV=nRT\)
o,
⇒ \(n=\frac{PV}{RT}\)
By substituting the values, we get
\(=\frac{1013250\times 1}{8.3145\times 298}\)
\(=408.94 \ moles\)
As we know,
⇒ \(Moles(n)=\frac{Mass(m)}{Molecular \ weight(MW)}\)
or,
⇒ \(MW=\frac{m}{n}\)
\(=\frac{11.5}{408.94}\)
\(=0.02812 \ Kg/mol\)
\(=28.12 \ g/mol\)