A single crystal of a metal that has the FCC crystal structure is oriented such that a tensile stress is applied parallel to the [100] direction. If the critical resolved shear stress for this material is 1.98 MPa, calculate the magnitude of applied stress necessary to cause slip to occur on the (111) plane in the direction.
Answers
Answer:
the magnitude of the stress necessary to cause slip to occur on the (111) plane in the \([1 0 \overline 1]\) direction is 4.85 MPa
Explanation:
From the given information;
To determine the angle \(\phi\) between the direction [100] and [111]; we have:
\(\phi = cos ^{-1} [\dfrac{u_1u_2+v_1v_2+w_1w_2}{ \sqrt{(u_1^2+v_1^2+w_1^2) (u_2^2+v_2^2+w_2^2) }}}\)
where;
[u₁,v₁,w₁] and [u₂, v₂, w₂] are directional indices.
replacing 1 for u₁ , 0 for v₁ and 0 for w₁ ;
also replacing 1 for u₂, 1 for v₂ and 1 for w₂ ; we have :
\(\phi = cos ^{-1} [\dfrac{1*1+0*1+0*1}{ \sqrt{(1^2+0^2+0^2) (1^2+1^2+1^2) }}}\)
\(\phi = 54.7^0\)
To determine the angle \(\lambda\) for the slip direction \([1 0 \overline 1]\)
\(\lambda= cos ^{-1} [\dfrac{u_1u_2+v_1v_2+w_1w_2}{ \sqrt{(u_1^2+v_1^2+w_1^2) (u_2^2+v_2^2+w_2^2) }}}\)
replacing 1 for u₁ , 0 for v₁ and 0 for w₁ ;
also replacing 1 for u₂, 1 for v₂ and -1 for w₂ ; we have :
\(\lambda = cos ^{-1} [\dfrac{1*1+0*0+(0*-1)}{ \sqrt{(1^2+0^2+0^2) (1^2+0^2+(-1^2)) }}}\)
\(\phi = cos ^{-1} [\dfrac{1}{\sqrt{2}}]\)
\(\lambda = 45^0\)
The yield strength for the slip process \([1 0 \overline 1]\) can now be calculated as:
\(\sigma_x = \dfrac{t_{xr}}{cos \phi \ \ cos \lambda}\)
where
\(t_{xr}\) = 1.98 MPa
\(\sigma_x = \dfrac{1.98}{cos 54.7^0 \ \ cos 45}\)
\(\sigma_x = \dfrac{1.98}{0.5779 *0.7071}\)
\(\mathbf{\sigma _x = 4.85 \ MPa}\)
Hence, the magnitude of the stress necessary to cause slip to occur on the (111) plane in the \([1 0 \overline 1]\) direction is 4.85 MPa
Related Questions
1. The term lefty loosey, righty tighty is used to prevent what?
Answers
Answer:
Used to recall the direction a standard screw
When is implementation of a Product Backlog item considered complete? (Choose the best answer)
A. At the end of the Sprint.
B. When the item has no work remaining in order to be potentially released.
C. When QA reports that the item passes all acceptance criteria.
D. When all work in the Sprint Backlog related to the item is finished.
Answers
Implementation of a Product Backlog item is considered complete when the item has no work remaining in order to be potentially released.
When the item has no work remaining in order to be potentially released. In the context of Agile software development, the Product Backlog represents a prioritized list of requirements or user stories that need to be implemented. Each item in the Product Backlog should be refined, estimated, and broken down into tasks during Sprint Planning. The implementation of a Product Backlog item is considered complete when all the necessary work has been done to potentially release it to the users or stakeholders.
This includes development, testing, quality assurance, and any other tasks required to ensure the item meets the defined acceptance criteria and is ready for release. The completion of a Product Backlog item is not necessarily tied to the end of a Sprint or the completion of other unrelated work in the Sprint Backlog.
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As a global society with many political demarcations, what is the best way to preserve resources that are held in common? What special problems does this kind of preservation entail?
Answers
Answer:
kindly check the explanation section.
Explanation:
In order to be able to preserve resources that are common there is need for each countries in the world to agree and cooperate. Also, policies should be set and made the standard for all countries involved. The developed countries should come together with developing measures to make sure that there is mutual agreements between these countries to preserve common resources. For instance, the most common resource is the Ozone layer, the industrialization in developed countries causes the depletion of ozone.
The main problem that the kind of preservation entails is how to get money for countries that are not rich enough to follow the agreed laydown rules. Other problems are: differences in economies and each countries have their own ways of regulating and preserving resources.
s) Use Cramer’s rule to solve the system below, and state the condition at which solution exists. ax+by = 1 cx+dy =−1
Answers
(a) The solution to the system of equation is, x = (d + b)/(ad - cb) and y = (-a - c)/(ad - cb).
(b) The condition at which the solution exists is, ad - cb ≠ 0.
Solving the system of equation with Cramer's rule
ax + by = 1
cx + dy = -1
D = [a b]
[c d]
D = ad - cb
Dx = [1 b]
[-1 d]
Dx = d + b
Dy = [a 1]
[c - 1]
Dy = -a - c
x = Dx/D
x = (d + b)/(ad - cb)
y = Dy/D
y = (-a - c)/(ad - cb)
Cramer's rule applies to the case where the coefficient determinant is nonzero.
Thus, D ≠ 0 (ad - cb ≠ 0).
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In the figure show, what's the distance from point H to point C?
A. 2'
B. 18'6"
C. 18'
D. 2'6"
Answers
Answer:
B.
Explanation:
I think not sure hehe
A console application runs
through a browser
via a command prompt
with a GUI
through another application
Answers
A console application typically runs via a command prompt. Hence, option B is the correct answer.
A console application typically runs via a command prompt or terminal window, where the user interacts with the application by entering commands or providing input through the keyboard and receiving output in the form of text displayed on the console.
It's important to note that the behavior of a console application can vary depending on how it is executed. For example, when running through a browser or with a GUI, the console interface may be hidden or abstracted away while still providing the underlying functionality of the application.
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See pic attached pleasee
Answers
Evaluation is the methodical determination of a subject's validity, worth, and relevance using standards-based criteria.
Thus, It can help an organization, program, design, project, or any other intervention or initiative evaluate any goal, realizable concept or proposal, or any alternative, to aid in decision-making; or to determine the level of achievement or value in relation to the goal and objectives, as well as the outcomes of any such action that has been taken.
In addition to providing insight into past or current projects, evaluation's main goal is to promote introspection and help identify potential areas for future improvement.
In a variety of human endeavours, such as the arts, criminal justice, and other fields, evaluation is frequently used to describe and evaluate topics of interest.
Thus, Evaluation is the methodical determination of a subject's validity, worth, and relevance using standards-based criteria.
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matter can exist in various phases, including solid, liquid, and gas. most matter can change from one phase to another depending on how much heat is gained or lost during phase changes. compare and contrast each of the three phases of matter in terms of particle arrangement, motion, and temperature. also explain how each type of phase change occurs in terms of heat lost or gained. answers should include an illustration of a heating/cooling curve
Answers
Matter can exist in different phases, namely solid, liquid, and gas. Let's compare and contrast these phases in terms of particle arrangement, motion, temperature, and phase changes. In a solid, particles are closely packed in a regular pattern, forming a fixed shape. The particles vibrate in their positions but don't move freely. Solid's temperature remains constant during a phase change.
Phase changes occur due to heat gained or lost. When heat is added, solids can melt into liquids (fusion) and liquids can vaporize into gases (vaporization). These processes require energy input to break intermolecular forces. When heat is removed, gases can condense into liquids (condensation) and liquids can freeze into solids (solidification). These processes release energy as heat is removed and intermolecular forces strengthen.
A heating/cooling curve illustrates the relationship between heat added/removed and temperature changes during phase changes. It typically shows temperature on the y-axis and time on the x-axis. The curve has flat portions where phase changes occur, indicating a constant temperature during those changes. I hope this helps! Let me know if you have any further questions.
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A horizontal force P is applied to a 130 kN box resting on a 33 incline. The line of action of P passes through the center of gravity of the box. The box is 5m wide x 5m tall, and the coefficient of static friction between the box and the surface is u=0.15. Determine the smallest magnitude of the force P that will cause the box to slip or tip first. Specify what will happen first, slipping or tipping.
Answers
Answer:
SECTION LEARNING OBJECTIVES
By the end of this section, you will be able to do the following:
Distinguish between static friction and kinetic friction
Solve problems involving inclined planes
Section Key Terms
kinetic friction static friction
Static Friction and Kinetic Friction
Recall from the previous chapter that friction is a force that opposes motion, and is around us all the time. Friction allows us to move, which you have discovered if you have ever tried to walk on ice.
There are different types of friction—kinetic and static. Kinetic friction acts on an object in motion, while static friction acts on an object or system at rest. The maximum static friction is usually greater than the kinetic friction between the objects.
Imagine, for example, trying to slide a heavy crate across a concrete floor. You may push harder and harder on the crate and not move it at all. This means that the static friction responds to what you do—it increases to be equal to and in the opposite direction of your push. But if you finally push hard enough, the crate seems to slip suddenly and starts to move. Once in motion, it is easier to keep it in motion than it was to get it started because the kinetic friction force is less than the static friction force. If you were to add mass to the crate, (for example, by placing a box on top of it) you would need to push even harder to get it started and also to keep it moving. If, on the other hand, you oiled the concrete you would find it easier to get the crate started and keep it going.
Figure 5.33 shows how friction occurs at the interface between two objects. Magnifying these surfaces shows that they are rough on the microscopic level. So when you push to get an object moving (in this case, a crate), you must raise the object until it can skip along with just the tips of the surface hitting, break off the points, or do both. The harder the surfaces are pushed together (such as if another box is placed on the crate), the more force is needed to move them.
Q.13 In order to produce maximum starting torque in a split-phase motor, how many degrees out of phase should the start- and run-winding currents be with each other?
Select one:
A. 180°
B. 0°
C. 120°
D. 90°
Answers
Answer:
D. 90 degrees.
Explanation:
Torque is a rotational force which moves an object in other direction. There should be 90 degrees out of phase to start, run winding currents with each other. Torque is produced by the rotational motion of an object. The angle of the object must be 90 degrees set in order to create torque.
1. What are the benefits and costs, or advantages and disadvantages, of autonomous driv-
ing technology to various corporate stakeholders and society?
2. Are the threats of harm from autonomous vehicles simply an acceptable risk, especially
when compared to fatalities caused by human-driven vehicles?
3. What steps could business, government, or individual drivers take to reduce the risk of
hacking in autonomous vehicles?
4. Do you think federal or state governments should regulate the emergence of autono.
mous driving technology, and if so how?
5. If you were the chief technology officer of a company that was developing autonomously
driven vehicles, what steps would you take to manage this technology appropriately?
Answers
The benefits of autonomous driving technology to various corporate stakeholders and society are numerous. Some advantages include improved safety, increased efficiency, and enhanced mobility.
Safety: Autonomous vehicles have the potential to reduce human error, which is a leading cause of accidents. With advanced sensors and algorithms, autonomous vehicles can detect and respond to potential hazards more effectively, potentially reducing the number of accident and fatalities on the road.
Efficiency: Autonomous vehicles have the potential to optimize traffic flow and reduce congestion. They can communicate with each other and make real-time decisions to avoid traffic jams, choose the most efficient routes, and improve overall transportation efficiency. Autonomous driving technology has the potential to provide transportation options for people who cannot drive, such as the elderly or disabled.
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Suppose that all the dislocations in 3000 mm3 of crystal were somehow removed and linked end to end. Given 1 m =0.0006214 mile, how far (in miles) would this chain extend for dislocation densities of (a) 10^4 mm^-2 (undeformed metal)? (b) 10^10 mm-2 (cold-worked metal)?
Answers
Answer:
please let me know the answer to this because I need to know as well. thanks
A construction company distributes its products by trucks loaded at its loading station. A backacter in conjunction with trucks are used for this purpose. If it was found out that on an average of 12 trucks per hour arrived and the average loading time was 3 minutes for each truck. A truck must queue until it is loaded. The backacter’s daily all-in rate is GH¢ 1000 and that of the truck is GH¢ 400.
a) Compute the operating characteristics: L, Lq, W, Wq, and P.
b) The company is considering replacing the backacter with a bigger one which will have an average service rate of 1.5 minutes to serve trucks waiting to have their schedules improved. As a manager, would you recommend the new backacter if the daily all-in rate is GH¢ 1300.
c) The site management is considering whether to deploy an extra backwater to assist the existing one. The daily all-in-rate and efficiency of the new backwater is assumed to be the same as that of the existing backwater. Should the additional backwater be deployed?
Answers
Answer:
a) \(L = 1.5\)
\(L_q = 0.9\)
\(W = \dfrac{1 }{8 } \, hour\)
\(W_q = \dfrac{3}{40 } \, hour\)
\(P = \dfrac{3}{5 }\)
b) The new backacter should be recommended
c) The additional backacter should not be deployed
Explanation:
a) The required parameters are;
L = The number of customers available
\(L = \dfrac{\lambda }{\mu -\lambda }\)
μ = Service rate
\(L_q\) = The number of customers waiting in line
\(L_q = p\times L\)
W = The time spent waiting including being served
\(W = \dfrac{1 }{\mu -\lambda }\)
\(W_q\) = The time spent waiting in line
\(W_q = P \times W\)
P = The system utilization
\(P = \dfrac{\lambda }{\mu }\)
From the information given;
λ = 12 trucks/hour
μ = 3 min/truck = 60/3 truck/hour = 20 truck/hour
Plugging in the above values, we have;
\(L = \dfrac{12 }{20 -12 } = \dfrac{12 }{8 } = 1.5\)
\(P = \dfrac{12 }{20 } = \dfrac{3}{5 }\)
\(L_q = \dfrac{3}{5 } \times \dfrac{3}{2 } = \dfrac{9}{10 } = 0.9\)
\(W = \dfrac{1 }{20 -12 } = \dfrac{1 }{8 } \ hour\)
\(W_q = \dfrac{3}{5 } \times \dfrac{1}{8 } = \dfrac{3}{40 } \, hour\)
(b) The service rate with the new backacter = 1.5 minutes/truck which is thus;
μ = 60/1.5 trucks/hour = 40 trucks/hour
\(P = \dfrac{12 }{40 } = \dfrac{3}{10}\)
\(W = \dfrac{1 }{40 -12 } = \dfrac{1 }{38 } \, hour\)
\(W_q = \dfrac{3}{10 } \times \dfrac{1}{38 } = \dfrac{3}{380 } \, hour\)
λ = 12 trucks/hour
Total cost = \(mC_s + \lambda WC_w\)
m = 1
\(C_s\) = GH¢ = 1300
\(C_w\) = 400
Total cost with the old backacter is given as follows;
\(1 \times 1000 + 12 \times \dfrac{1}{8} \times 400 = \$ 1,600.00\)
Total cost with the new backacter is given as follows;
\(1 \times 1300 + 12 \times \dfrac{1}{38} \times 400 = \$ 1,426.32\)
The new backacter will reduce the total costs, therefore, the new backacter is recommended.
c)
Here μ = 3 min/ 2 trucks = 2×60/3 truck/hour = 40 truck/hour
\(\therefore W = \dfrac{1 }{40 -12 } = \dfrac{1 }{38 } \, hour\)
Total cost with the one backacter is given as follows;
\(1 \times 1000 + 12 \times \dfrac{1}{8} \times 400 = \$ 1,600.00\)
Total cost with two backacters is given as follows;
\(2 \times 1000 + 12 \times \dfrac{1}{38} \times 400 = \$ 2,126.32\)
The additional backacter will increase the total costs, therefore, it should not be deployed.
Can someone tell me what car year and model this is please
Answers
Answer:
i think 1844
Explanation:
2005 BMW 5 Series , that should be it
Andrew invests £2500 in an account for 4 years at 2. 4% compound interest per year.
At the end of the 4 years, a deduction of 30% of the total interest is made from the account. Work out the amount in the account at the end of the 4 years, after the deduction has been made
Answers
The amount in the account at the end of 4 years, after the deduction has been made, is £2668.
To calculate the amount in the account at the end of 4 years after the deduction, we need to consider compound interest and the deduction. Using the compound interest formula A = P(1 + r/n)^(nt), where A is the final amount, P is the principal amount, r is the annual interest rate, n is the number of compounding periods per year, and t is the number of years, we can calculate the total amount after 4 years. Then, we apply the deduction of 30% to the total interest earned. However, the specific values for the interest rate compounding frequency and the calculation of the deduction need to be provided to calculate the final amount accurately.
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I ran across this symbol in some Electrical wiring documents and I am unaware of what this means. Any help?
Answers
Answer:
Opened Push-button Switch (i.e. a PTM Switch)
Explanation:
Tha's just another symbol for a switch, but this one specifies that the switch is a push-button type of switch.
Since it's not touching and completing the line, the state of the switch is initially open.
Gray cast iron, with an ultimate tensile strength of 31 ksi and an ultimate compressive strength of 109 ksi, has the following stress states at various critical locations. Using an appropriate failure theory, find the factor of safety in each case. State the name of the theory that you are using. These problems are designed to test your understanding of out-of-plane principal stresses!
Answers
Using an appropriate failure theory, find the factor of safety in each case. State the name of the theory that you are using the theory is max stress theory.
Wat is the max stress theory?The most shear strain concept states that the failure or yielding of a ductile fabric will arise whilst the most shear strain of the fabric equals or exceeds the shear strain fee at yield factor withinside the uniaxial tensile test.”
Stress states at various critical locations are f= 2.662.
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Which of these is the number of degrees of crankshaft rotation for which the valve is
lifted off the seat?
A. Duration
B. Lift
C. Overlap
D. Underlap
Answers
Question
А
Particle of 2kg mass is being pulled across a smooth horizontal
surface by a horizontal force. The force does 24 Joule of work in
increasing
the particle's
velocity from 5m/s
to v m/s. calculate
the value of v and the position of particle
after 15s
Answers
Answer:
udhddhdiejebdidjebdhdidh
charging method .Constant current method
Answers
Answer:
There are three common methods of charging a battery; constant voltage, constant current and a combination of constant voltage/constant current with or without a smart charging circuit.
Constant voltage allows the full current of the charger to flow into the battery until the power supply reaches its pre-set voltage. The current will then taper down to a minimum value once that voltage level is reached. The battery can be left connected to the charger until ready for use and will remain at that “float voltage”, trickle charging to compensate for normal battery self-discharge.
Constant current is a simple form of charging batteries, with the current level set at approximately 10% of the maximum battery rating. Charge times are relatively long with the disadvantage that the battery may overheat if it is over-charged, leading to premature battery replacement. This method is suitable for Ni-MH type of batteries. The battery must be disconnected, or a timer function used once charged.
Constant voltage / constant current (CVCC) is a combination of the above two methods. The charger limits the amount of current to a pre-set level until the battery reaches a pre-set voltage level. The current then reduces as the battery becomes fully charged. The lead acid battery uses the constant current constant voltage (CC/CV) charge method. A regulated current raises the terminal voltage until the upper charge voltage limit is reached, at which point the current drops due to saturation.
In which type of operations does lean production work best? check all that apply.
Answers
Lean production works best with standardized and repeatable processes. Lean production is a manufacturing technique that frequently aims to cut down on wait times for both suppliers' and customers' .
Lean manufacturing seeks to improve processes so that they use less energy, time, and resources overall. For some businesses than others, lean tools may be a better fit. But among the most helpful lean tools are Kaizen, 5S, Kanban, Value Stream Mapping, and Focus PDCA. Value, the value stream, flow, pull, and perfection are the five cornerstones of lean manufacturing, respectively. These are now the cornerstones on which lean is implemented. 1. Value: Value is established from the viewpoint of the customer and relates to the price point at which they are willing to purchase goods or services. Lean production is a manufacturing strategy that frequently aims to cut down on wait times for both suppliers' and customers' responses as well as those inside the manufacturing machine.
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"geophysical exploration definition"
Answers
Answer:
Exploration geophysics is an applied branch of geophysics and economic geology, which uses physical methods, such as seismic, gravitational, magnetic, electrical and electromagnetic at the surface of the Earth to measure the physical properties of the subsurface, along with the anomalies in those properties
You deposit $5,000 in a savings account that earns 8% simple interest per year. What is the minimum number of years you must wait to double your balance?
Answers
Answer:
It will take 12.5 years double the balance
Explanation:
As we know
A = P (1 + rt)
where A is the amount
P is the principal sum of money deposited
r is the rate of interest (per annum)
t is the time in years
Substituting the given values we get -
2P = P ( 1+ 0.08 * t)
2 = 1+ 0.08 * t
1 = 0.08 * t
t =
\(\frac{1}{0.08} \\\frac{100}{8} \\12.5\) years
problem resulting from using a seat warmer for too long, it is called by ___
Answers
The problem resulting from using a seat warmer for too long is called "Toasted Skin Syndrome." In rare situations, the condition may cause skin cancer.
Toasted Skin Syndrome is also known as erythema ab igne. It is a condition that causes skin discoloration and pigmentation due to prolonged exposure to low heat. This condition is generally caused by extended periods of exposure to heat sources such as a laptop, heating pad, hot water bottle, or seat warmer. The heat source doesn't have to be too hot to cause this condition.
It takes long-term exposure to lower heat to create this problem. Toasted skin syndrome appears like a spotty or patchy reddish or brownish discoloration of the skin. It is most frequently seen on the thighs, arms, and legs, but it can occur anywhere on the body.
This is a non-cancerous condition that can go away on its own once the heat source has been removed. The affected skin may feel warm, itchy, or tender to the touch. Furthermore, Therefore, it is essential to take precautions to avoid prolonged exposure to heat sources.
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An ideal Rankine cycle with reheat uses water as the working fluid. The conditions at the inlet to the first-stage turbine are p1 5 2500 lbf/in.2, T1 5 10008F. The steam is reheated at constant pressure p between the turbine stages to 10008F. The condenser pressure is 1 lbf/in.2 (a) If p/p1 5 0.2, determine the cycle thermal efficiency and the steam quality at the exit of the second-stage turbine.
Answers
Answer:
myjmjkkyjm
Explanation:
Tyjjhmjtymtyyjmjymjy
1. You use
switches when you
have two switches controlling one or more
lights.
single pole
4-way
2-way
3-way
Answers
Wattage is:
Select one:
a.
A measure of the total electrical work being performed per unit of time.
b.
Expressed as P = R × A.
c.
Both A and B.
d.
Neither A nor B.
Answers
Answer:
c.Both A and B.
Explanation:
the wattage is c and d
Fill in the Blank
6.
is an important two-word phrase that means safe work practices must always
be your main priority.
Answers
Safety First is an important two-word phrase that means safe work practices must always be your main priority.
Why is work safety important?An environment that is safe and healthy for workers may minimize injury and sickness expenses, lower absenteeism and turnover, boost productivity and quality, and improve employee morale. In other words, safety benefits the workplace. Additionally, safeguarding employees is the moral thing to do.For every dollar invested on a safety and health program, employers may save $4 to $6. According to OSHA, businesses with effective safety and health management systems lower the cost of accidents and illnesses by 20–40%.The price of occupational diseases, sicknesses, and fatalities is substantially more than the price of workers' compensation insurance by itself. In terms of these expenditures, insurance is only the top of the iceberg.Learn more about Work safety refer to :
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do plastic materials have high or low ductility? Explain why.
Answers
question 3: washing machines does the price of an appliance convey something about its quality? washers are classified as top-load high efficiency (he), top-load agitator, and front-load washers. the best front-loaders clean better and are gentler than the best he top-loading washing machines while using less water. front-loaders take longer than he top-loaders but spin faster, extracting more water, and reducing dryer time. fifty-four different front-loading washers were ranked on characteristics ranging from an overall satisfaction score, washing performance (x1) , energy efficiency (x2) , water efficiency (x3) , gentleness (x4) , noise (x5) , vibration (x6) , capacity (x7) , and cycle time (x8)
Answers
Answer: that’s too much for me
Explanation:
Waa