Consider a single crystal of nickel oriented such that a tensile stress is applied along a [001] direction. If slip occurs on a (111) plane and in a [101]direction and is initiated at an applied tensile stress of 13.9 MPa (2020 psi), compute the critical resolved shear stress
Answers
Answer:
\(\mathbf{\tau_c =5.675 \ MPa}\)
Explanation:
Given that:
The direction of the applied tensile stress =[001]
direction of the slip plane = [\(\bar 1\)01]
normal to the slip plane = [111]
Now, the first thing to do is to calculate the angle between the tensile stress and the slip by using the formula:
\(cos \lambda = \Big [\dfrac{d_1d_2+e_1e_2+f_1f_2}{\sqrt{(d_1^2+e_1^2+f_1^2)+(d_2^2+e_2^2+f_2^2) }} \Big]\)
where;
\([d_1\ e_1 \ f_1]\) = directional indices for tensile stress
\([d_2 \ e_2 \ f_2]\) = slip direction
replacing their values;
i.e \(d_1\) = 0 ,\(e_1\) = 0 \(f_1\) = 1 & \(d_2\) = -1 , \(e_2\) = 0 , \(f_2\) = 1
\(cos \lambda = \Big [\dfrac{(0\times -1)+(0\times 0) + (1\times 1) }{\sqrt{(0^2+0^2+1^2)+((-1)^2+0^2+1^2) }} \Big]\)
\(cos \ \lambda = \dfrac{1}{\sqrt{2}}\)
Also, to find the angle \(\phi\) between the stress [001] & normal slip plane [111]
Then;
\(cos \ \phi = \Big [\dfrac{d_1d_3+e_1e_3+f_1f_3}{\sqrt{(d_1^2+e_1^2+f_1^2)+(d_3^2+e_3^2+f_3^2) }} \Big]\)
replacing their values;
i.e \(d_1\) = 0 ,\(e_1\) = 0 \(f_1\) = 1 & \(d_3\) = 1 , \(e_3\) = 1 , \(f_3\) = 1
\(cos \ \phi= \Big [ \dfrac{ (0 \times 1)+(0 \times 1)+(1 \times 1)} {\sqrt {(0^2+0^2+1^2)+(1^2+1^2 +1^2)} } \Big]\)
\(cos \phi= \dfrac{1} {\sqrt{3} }\)
However, the critical resolved SS(shear stress) \(\mathbf{\tau_c}\) can be computed using the formula:
\(\tau_c = (\sigma )(cos \phi )(cos \lambda)\)
where;
applied tensile stress \(\sigma =\) 13.9 MPa
∴
\(\tau_c =13.9\times ( \dfrac{1}{\sqrt{2}} )( \dfrac{1}{\sqrt{3}})\)
\(\mathbf{\tau_c =5.675 \ MPa}\)
Related Questions
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K
A shaft consisting of a steel tube of 50-mm outer diameter is to transmit 100 kW of power while rotating at a frequency of 36 Hz.
Determine the tube thickness that should be used if the shearing stress is not to exceed 60 MPa.
The tube thickness that should be used is [
mm.
Answers
Based on the information, the tube thickness that should be used is 3.18 mm.
How to calculate the valuePower = Torque * Angular velocity
100 kW = Torque * (2 * pi * 36 Hz)
Torque = 2212.14 N-m
In this case, the polar moment of inertia is:
J = pi * 50⁴ / 32 = 196250 pi mm⁴
Maximum shear stress = Torque / J
Maximum shear stress = 2212.14 N-m / 196250 pi mm⁴ = 0.0499 MPa
Tube thickness = 2 * ✓(60 MPa / pi * 50²) = 3.18 mm
Therefore, the tube thickness that should be used is 3.18 mm.
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The IRT has a vital responsibility in gathering forensic evidence, which is defined as collecting and preserving the information that can be used to reconstruct events.
a. True
b. False
Answers
To generate the same amount of lift as altitude is increased, an airplane must be flown at A) the same true airspeed regardless of angle of attack. B) a lower true airspeed and a greater angle of attack. C) a higher true airspeed for any given angle of attack.
Answers
To generate the same amount of lift as altitude is increased, an airplane must be flown at "a higher true airspeed for any given angle of attack" (option c).
This is because as altitude increases, the air density decreases, which means that there is less air flowing over the wings to generate lift. To compensate for this decrease in air density, the airplane must fly at a higher true airspeed to maintain the same amount of lift. This is because the lift generated by the wings is directly proportional to the square of the true airspeed, so as airspeed increases, the lift generated also increases. Additionally, the angle of attack may need to be adjusted to optimize lift and maintain the desired altitude.
Option c is answer.
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the unix/linux ____ command displays the system date, which the system administrator maintains.
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The Unix/Linux "date" command displays the system date.
The "date" command is a built-in utility in Unix and Linux systems that displays the current date and time, as well as allows users to set the system's date and time. The system administrator maintains the system date and time by synchronizing the system clock with a time server or manually setting the date and time. The "date" command is commonly used in scripts and batch files to perform actions based on the current date and time.
The correct answer is the "date" command.
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Using benefit-cost ratio analysis, determine which one of the three mutually exclusive alternatives should be selected. Each alternative has a 10-year useful life and 20% MARR 247 А в с First Cost $120 $340 $560 $760 Uniform Annual Beneft $40 $100 $140 $170 $0 $0 Salvage Value $40 $50 СА B Stop sharing app honorocos sharing your screen
Answers
What should you use to clean hand and power tools?
Answers
How to Clean Hand Tools:
Dish soap to tackle oil and greaseLarge bucket for hot water and dish soap solution.Scrubber, scrub brush, or steel wool to further clean away any dirt.Cloth to wipe down your tools.Cleaning Power Tools:
wipe dirt and other particles from the outside casing with a good cleaning cloth. Compressed air is the best option to clean the particles from the tool's vents; cleaning your tool's exhaust vents with a brush could push the dirt farther into the tool and inadvertently cause more damage later.The rate or speed at which work is performed is called what?
Select one:
Answers
Answer:
What are you talking about? pls explain and then maybe I can help.
Explain 5 consequences of using wrong tool for winding
Answers
Answer:
1. Poor Productivity
2. Hazardous Job Sites
3. Wasted Money
4. Inability to Scale
5. Damaged Professional Reputation.
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A composite plane wall consists of a 3-in. -thick layer of insulation (ks = 0. 029 Btu/h · ft · °R) and a 0. 75-in. -thick layer of siding (ks = 0. 058 Btu/h · ft · °R). The inner temperature of the insulation is 67°F. The outer temperature of the siding is 8°F. Determine at steady state (a) the temperature at the interface of the two layers, in °F, and (b) the rate of heat transfer through the wall in Btu/h·ft2 of surface area
Answers
At steady state, the temperature at the interface of the two layers is 41°F, and the rate of heat transfer through the wall is 2.48 Btu/h·ft² of surface area.
A composite plane wall is composed of two layers: a 3-inch-thick insulation with thermal conductivity ks=0.029 Btu/h·ft·°R, and a 0.75-inch-thick siding with ks=0.058 Btu/h·ft·°R. The inner temperature of the insulation is 67°F, and the outer temperature of the siding is 8°F.
(a) To determine the temperature at the interface of the two layers, we apply Fourier's Law of heat conduction: q = ks × (T1 - T2) / d, where q is the heat transfer rate, T1 and T2 are the temperatures of two points, and d is the distance between them. Since the heat transfer rate is constant across the wall, we can set up an equation for each layer:
q = 0.029 × (67 - T_interface) / 3
q = 0.058 × (T_interface - 8) / 0.75
Solving these equations simultaneously, we get T_interface = 41°F.
(b) Using the equation for either layer, we can find the rate of heat transfer through the wall:
q = 0.029 × (67 - 41) / 3
q = 2.48 Btu/h·ft²
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If a construction company is considering a new type of material to use in their construction, which factors would they
focus on? (Select all that apply.)
that the new material does the same thing as an existing material but better
that the new material does the same thing as an existing material but cheaper
that the science behind the material be familiar to and understood by its employees
that the properties of the new material meet their construction needs
Answers
I would honestly select every one of the given options. Gor a company evaluating this new material it would be very valuable to hit each of these factors.
Which items are NOT found on a
door?*
5 points
Cladding
Moulding
Weatherstrip
Check Strap
Striker
All of the above
None of the above
Answers
Answer:
None of the above cause thats what i put
A monkey has a robotic arm connected to its brain using a Bluetooth transmitter. The arm requires a current of 400 run. If the arm has a resistance of 56 M Ohmswhat is the necessary voltage from a battery will it need to run?
Answers
Answer:
22400 volts
Explanation:
According to Ohms law, the resistance can be calculated as;
R=V/I where R is total resistance, V is voltage across the whole circuit and I is the current across the whole circuit.
From the question;
I= 400 A
R= 56 Ω
Applying the formula;
R=V/I
56 =V/400
V= 400*56 =22400 volts
Users regularly log on with a username and password. However, management wants to add a second authentication factor for any users who launch the gcga application. The method needs to be user-friendly and non-disruptive. Which of the following will BEST meet these requirements?An authentication applicationTPMHSMPush notifications
Answers
Push notifications would likely be the best option for adding a second authentication factor that is user-friendly and non-disruptive.
An authentication application, such as a token generator or authenticator app, could also be a good choice, as it would allow users to easily complete the second authentication step without having to remember additional passwords or codes.
TPM (Trusted Platform Module) and HSMs (Hardware Security Modules) are hardware-based security measures that can provide additional protection for sensitive data, but they may not be as user-friendly or non-disruptive as the other options.
It's worth considering the specific needs and requirements of your organization and the users in deciding which option to choose.
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2-design a set of simple test programs to determine the type compatibility rules of a c compiler to which you have access. Write a report of your findings
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When designing a set of simple test programs to determine the type compatibility rules of a C compiler to which you have access, it is important to consider the different data types that are used in C programming. An example of a set of test programs that can be used to determine the type compatibility rules of a C compiler:
Integer Test the compatibility of the C compiler with integer data types. It declares two variables of type int, initializes them with values, and then adds them together. The result is printed to the screen. If the program compiles and runs without any errors, then the C compiler is compatible with integer data types.
Floating-Point Test the compatibility of the C compiler with floating-point data types. It declares two variables of type float, initializes them with values, and then adds them together. The result is printed to the screen. If the program compiles and runs without any errors, then the C compiler is compatible with floating-point data types.
By running the set of simple test programs described above, you can determine the type compatibility rules of a C compiler to which you have access. If any of the programs do not compile or run without errors, then you can determine which data types are not compatible with the C compiler and adjust your code accordingly.
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___________________ is the primary classification trait used to explain how scientists divide rocks into the three classification groups.
answer choices
- Composition
- Formation
- Location
- Texture
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What is the output pattern observed at QA in the first four clock cycles? Assume the flip flops are in reset condition initially. (Please give the answer in the format: output in clock cycle 1(initial value), output in clock cycle 2, output in clock cycle 3 , output in clock cycle 4) a. 0011 b. 0110 c. None of these d. 0101 e. 0100
Answers
Option b is correct. The output pattern that is observed at QA in the first four clock cycles is 0110.
The ability of a flip-flop to toggle or switch between its two states, the "toggle state" and the "memory state," gives rise to the term "toggle flip-flop." A T-type flip-flop is perfect for use in binary counter construction and frequency division because there are just two states.
By connecting the output of one to the clock input of the next, "Toggle" or "T-type flip-flops" can be used to create binary ripple counters. Since toggle flip-flops change from one state to another (HIGH to LOW or LOW to HIGH) at each clock cycle, they are perfect for building ripple counters. Simple frequency divider and ripple counter circuits can be easily built using conventional T-type flip-flop circuits.
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What is different about residential construction on the local level from residential construction on the national level?
Answers
Answer:
The difference lies in the coverage of the construction. While local level construction focuses on the local area, national level construction has a nation-wide coverage.
Explanation:
Residential construction concentrates on the construction of residential buildings that have sleeping accommodations. Such constructions are opposed to the construction of other buildings that are meant for commercial uses as they lack sleeping accommodations. The federal, state, and local governments can embark on the construction of residential quarters for their residents. The constructions are also funded at the given level. When it is locally funded, the construction is meant to satisfy specific local needs. The constructions by the federal government consider the needs of many localities, and may not meet specific local needs.
Answer: A Residential construction is local in its effects even though those effects have a national impact.
Explanation:
Typically a constant voltage CP rectifier will NOT have:
A) transformer
B) transistor
C) rectifying element
D) voltage taps
Answers
B) transistor. Typically a constant voltage CP rectifier will NOT have transistor.
A constant voltage CP (controlled potential) rectifier is a type of rectifier used in electrochemical processes. It typically consists of a transformer, a rectifying element (such as diodes), voltage taps, and other components. However, it does not typically include a transistor, as transistors are not commonly used in CP rectifiers. Transistors are electronic devices used for amplification and switching of electrical signals, and they are not necessary for the operation of a typical constant voltage CP rectifier, which primarily functions to provide a stable DC output voltage for electrochemical processes.
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1. Làm thế nào để đảm bảo tính khả thi của văn bản hành chính ?
2.Dẫn chứng một số văn bản hành chính không thực hiện được do thiếu tính khả thi ?
Answers
Answer:
Explanation:
......................
The declaration property used to set the text color on a web page is
Answers
Answer:
color
Explanation:
Without more context I cannot be sure that this is correct, but I believe you are looking for the CSS declaration property of "color".
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.
- Heather
Find the dual of following linear programming problem
min 4x1 - 3 x2
subject to
3x1 - x2 ≤ 6
5x1 - 4x2 ≥ 8
x1 - 6x2 =5
x1, x2 ≥ 0
Answers
The dual problem of a linear programming problem can be found by flipping the inequality signs and re-assigning the objective function as a constraint.
Given the following linear programming problem min 4x1 - 3 x2 subject to 3x1 - x2 ≤ 6 5x1 - 4x2 ≥ 8 x1 - 6x2 =5 x1, x2 ≥ 0To find the dual of the problem, the following steps can be taken:
Step 1: Flip the problem The first step in finding the dual problem is to flip the inequality signs of the constraint of the original problem. The constraints of the original problem are as follows:3x1 - x2 ≤ 65x1 - 4x2 ≥ 8x1 - 6x2 = 5Flipping the inequality signs of the above equations results in the following:3x1 - x2 ≥ 65x1 - 4x2 ≤ 8x1 - 6x2 = 5
Step 2: Re-assign the objective The next step is to re-assign the objective function of the original problem as a constraint. That is, the coefficients of the original objective function are used as constraints in the dual problem. Thus, for the given problem,
we have:4x1 - 3x2 = x0Step 3: Formulate the dual problem The dual problem can now be formulated by using the re-assigned objective function and the flipped inequality signs of the original problem. The coefficients of the original problem form the new objective function of the dual problem, while the flipped inequalities form the constraints of the dual problem. Therefore, the dual problem of the given problem is: minimize 6y1 + 8y2 + 5y3, subject to:3y1 + 5y2 + y3 ≥ 4- y1 - 4y2 - 6y3 ≥ -3Where y1, y2 and y3 are the dual variables corresponding to the original constraints. Thus, the dual problem of the given problem has been found.
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The answer to the question mark the park in a
Answers
Use the HELPrct data from the mosaicData to calculate the mean of all numeric variables (be sure to exclude missing values)
Answers
To calculate the mean of all numeric variables in the HELPrct data from the mosaicData package, we can use the colMeans() function in R. This function calculates the mean of each column in a data frame.
However, it only works on numeric columns, so we need to first remove any non-numeric columns or missing values.
To do this, we can use the select_if() function from the dplyr package to only select columns that are numeric. Then, we can use the na.omit() function to remove any rows with missing values. Finally, we can use the colMeans() function to calculate the mean of each column.
Here's the code:
library(mosaicData)
library(dplyr)
# Select only numeric columns
numeric_cols <- select_if(HELPrct, is.numeric)
# Remove rows with missing values
numeric_cols <- na.omit(numeric_cols)
# Calculate column means
means <- colMeans(numeric_cols)
# Print the result
print(means)
This will give us the mean of each numeric column in the HELPrct data, excluding any missing values.
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The angle of attack of a wing directly controls the A) angle of incidence of the wing. B) amount of airflow above and below the wing. C) distribution of pressures acting on the wing.
Answers
The angle of attack of a wing directly controls the C) distribution of pressures acting on the wing.
When the angle of attack of a wing is increased, the air moving over the curved upper surface of the wing must travel a greater distance and faster than the air moving beneath the wing's flat lower surface. This creates an area of lower air pressure above the wing and an area of higher air pressure beneath the wing, resulting in lift. The greater the angle of attack, the greater the lift produced.
However, if the angle of attack is too great, the airflow over the wing may separate, causing a loss of lift and potentially leading to a stall. Therefore, proper control of the angle of attack is crucial for safe and efficient flight.
Option C is answer.
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When a water regulating valve is used to control the head pressure of a water-cooled system, the valve's spring is acting against which pressure to modulate the water flow?
Answers
Answer: The head pressure of the system
Explanation:
what procedure is recommended when climbing or descending vfr on an airway?
Answers
When climbing or descending under Visual Flight Rules (VFR) on an airway, it is recommended to follow the procedure of maintaining the assigned altitude until reaching the entry or exit point of the airway.
At that point, the pilot should level off at the assigned altitude before commencing the climb or descent. When flying under VFR on an airway, pilots are expected to adhere to certain procedures to ensure safe and organized flight operations. During a climb or descent, the recommended procedure is to maintain the assigned altitude until reaching the entry or exit point of the airway. This means that the pilot should continue flying at the current altitude until reaching the designated point where the airway is entered or exited. Upon reaching the entry or exit point, the pilot should then level off at the assigned altitude before initiating the climb or descent. This helps in maintaining separation from other aircraft and ensuring a smooth transition onto or off the airway. By following this procedure, pilots can ensure compliance with air traffic control instructions, promote safety, and minimize the risk of conflicts with other aircraft operating in the vicinity.
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will give brainliest and 10 points
what are 5 good wood working projects that are easy.
Answers
Answer:
a bowl, plate,
Explanation:
what is a likely result from an esthetician's investment in high-quality machines?
Answers
Answer:
Investing in high-quality machines can have several potential benefits for an esthetician. Here are some likely results:
1. Improved client satisfaction: High-quality machines can offer superior results, which can lead to increased client satisfaction. Clients are likely to be pleased with the quality of the service and the outcomes of the treatment.
2. Increased revenue: Investing in high-quality machines can lead to increased revenue for an esthetician. Clients are willing to pay more for treatments that offer superior results. In addition, high-quality machines can allow an esthetician to offer a wider range of treatments, which can attract new clients and increase business.
3. Enhanced reputation: Having access to high-quality machines can enhance an esthetician's reputation as a professional who is committed to offering the best possible treatments to clients. This can lead to increased word-of-mouth referrals and more business in the long run.
4. Improved efficiency: High-quality machines can help an esthetician work more efficiently, which can lead to an increase in the number of clients they can see in a day. This can lead to increased revenue and a more successful business overall.
5. Better results: High-quality machines can offer superior results compared to lower-quality machines or manual treatments. This can lead to better outcomes for clients and a more satisfied customer base.
Overall, investing in high-quality machines can have many potential benefits for an esthetician, including improved client satisfaction, increased revenue, enhanced reputation, improved efficiency, and better results.
Technician A says that tailor-rolled parts may be used for collision energy managements.
Technician B says that tailor-welded parts are aluminum and steel parts joined together. Who is right?
A Only
B only
Both A and B
Neither A nor B
Answers
A pair of 20° full depth involute bevel gears is used to connect two shafts at right angles having a velocity ratio 2. 5:1. The gear is made from cast steel and the pinion is from the forged steel. Pinion transmits 37. 5 kW at 750 rpm Design the gear drive and check the design for dynamic and wear loads
Answers
The given problem requires designing a gear drive using a pair of 20° full depth involute bevel gears to connect two shafts at right angles with a velocity ratio of 2.5:1. The pinion is made from forged steel and transmits 37.5 kW at 750 rpm.
To design the gear drive, we need to consider several factors such as the gear ratio, material selection, and load calculations.Gear ratio:The given velocity ratio is 2.5:1, which means for every 2.5 revolutions of the driving gear (pinion), the driven gear (gear) completes 1 revolution.Material selection:The gear is made from cast steel, while the pinion is made from forged steel. This selection is based on the properties of the materials, such as strength, durability, and cost-effectiveness.
Once the gear drive is designed and the dynamic and wear loads are calculated, it is important to compare these loads with the allowable load limits specified for the chosen materials. This ensures that the gear drive will operate safely and efficiently without excessive wear or failure.It is worth noting that the specific calculations for the gear drive design, dynamic load, wear load, and material selection require detailed formulas and values that are not provided in the question. To accurately design and check the gear drive
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