This part might take approximately 5,000 minutes to resist the cyclic loading before failure.
How long can the part withstand the cyclic loading before failure?The endurance of an engineering part under cyclic loading can be estimated using the concept of fatigue life. Fatigue life refers to the number of cycles a material can withstand before failure under a specific stress level. In this case, the part is made of 2014-T6 aluminum and subjected to a cyclic stress of 200 MN/m2.
To determine the endurance, we need to consider the fatigue strength of the material, which represents its resistance to cyclic loading. Fatigue strength is determined through experimental testing and analysis. By dividing the fatigue strength by the applied cyclic stress, we obtain the number of cycles the part can endure before failure.
Fatigue is a common failure mechanism in engineering materials and structures subjected to cyclic loading. Understanding the fatigue behavior of materials is essential in designing components that can withstand long-term cyclic loads without failure.
Factors such as material properties, stress levels, loading frequency, and surface conditions can influence the fatigue life of a part. Engineers employ various techniques to predict and improve the fatigue life, including stress analysis, fatigue testing, and design modifications.
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1. Determine the mass (in kg and in Ibm) and the weight (N and lbf) of the air contained in a
room whose dimensions are 6 mx 6 mx 8 m. Assume the density of the air is 1.16 kg/m3.
Knowing that the acceleration of gravity g=9.81 m/s = 62.2 ft2/s.
heres a link! ;)
http://www.econsulat.ro/
Select the correct answer.
Which type of material functions as heat shields in space shuttles?
ОА. .
elastomers
OB.
metals
O c.
semiconductors
D.
plastics
E.
composites
C. Semiconductors.
They are made up of what is called a porous silicon material that is very light and extremely heat resistant.
Answer:
composites
Explanation:
This list gives the lengths of different leaves in centimeters. 7. 5, 9. 5, 9. 0, 8. 0, 7. 5, 8. 5, 7. 5, 8. 5, 9. 5, 8. 5, 9. 0, 9. 5, 8. 0, 9. 5, 8. 0, 9. 0, 9. 0, 9. 0 Create a line plot to display the data. To create a line plot, hover over each number on the number line. Then click and drag up to plot the data
The line plot would have a number line ranging from 7 to 9.5 with increments of 0.5. There would be data points plotted at 7.5, 9.5, 9.0, 8.0, 8.5, and 9.0, with multiple points at certain values.
The line plot would visually represent the distribution of leaf lengths.
Here is a textual representation of the line plot based on the given data:
7.5 | X
7.75 |
8.0 | X
8.25 |
8.5 | X X
8.75 |
9.0 | X X X X
9.25 |
9.5 | X X X
9.75 |
In the line plot, each X represents a data point from the given list. The vertical axis represents the count or frequency of each length, while the horizontal axis represents the range of lengths.
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Eigth people work in an office.they are paid hourly rates of £12 £15 £15 £14 £13 £14 £13 £13
Answer:
What about it?
Explanation:
Calculate r/R ratio for BCC interstitial compound and FCC interstitial compound. Where ""r"" is the radius for interstitial atom and ""R"" is the radius of host atom. Present all the details of the work.
Answer:
The r/R ratio for an interstitial compound can be calculated using the following formula:
r/R = [(3V_i)/(4πV_h)]^(1/3)
where r is the radius of the interstitial atom, R is the radius of the host atom, V_i is the volume of the interstitial atom and V_h is the volume of the host atom.
For BCC interstitial compound, the interstitial site is located at the center of the cube, and the coordination number is 8. Therefore, the volume of the interstitial atom is:
V_i = (4/3)πr^3
The volume of the host atom is:
V_h = [(4/3)πR^3]/2
since there are only two atoms per unit cell.
Substituting these values into the formula, we get:
r/R = [(3V_i)/(4πV_h)]^(1/3)
r/R = [(3(4/3)πr^3)/(4π[(4/3)πR^3]/2)]^(1/3)
r/R = [(2r^3)/(R^3)]^(1/3)
r/R = (2/1)^(1/3)
r/R = 1.2599
For FCC interstitial compound, the interstitial site is located at the face center of the cube, and the coordination number is 12. Therefore, the volume of the interstitial atom is:
V_i = (4/3)πr^3
The volume of the host atom is:
V_h = [(4/3)πR^3]/4
since there are four atoms per unit cell.
Substituting these values into the formula, we get:
r/R = [(3V_i)/(4πV_h)]^(1/3)
r/R = [(3(4/3)πr^3)/(4π[(4/3)πR^3]/4)]^(1/3)
r/R = [(4r^3)/(R^3)]^(1/3)
r/R = (4/1)^(1/3)
r/R = 1.5874
Therefore, the r/R ratio for BCC interstitial compound is 1.2599, and for FCC interstitial compound is 1.5874.
Can be used to eliminate rubbing friction of wheel touching frame. 1.Traction 2.Thrust washer
Answer:
thrust washer
can be used to eliminate rubbing friction of wheel touching frame
what can be the main disadvantage of pulse amplitude modulation?
Answer:
transmission bandwidth required is very large.
Explanation:
Technician A says that ridged foam may be used in a pillar. Technician B says that ridged foam may be used in the frame of a body-over -frame vehicle. Which technician is correct?
A only, B only, Both, or Neither
Both of the Technician A and Technician B are correct.
Can ridged foam be used in automotive structures?The ridged foam can be used as a structural component in various parts of a vehicle which includes pillars and frames. It is a lightweight and strong material that can help improve fuel efficiency and reduce noise and vibration.
In addition, the ridged foam can also provide thermal insulation which can be beneficial in areas where heat or cold transfer is a concern. A proper design and testing should be conducted to ensure that the use of ridged foam is safe and effective in a particular application.
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When the value of the output cannot be determined even if the value of the controllable input is known, the model is:_________
a. analog.
b. digital.
c. stochastic.
d. deterministic.
Answer:
c. stochastic.
Explanation:
A stochastic model is a tool in statistics, used to estimate the probability distributions of intended outcomes by the allowance of random variation in any number of the inputs over time. For a stochastic model, Inputs to a quantitative model are uncertain, and the value of the output from a stochastic model cannot be easily determined, even if the value of the input that can be determined is known. The distributions of the resulting outcomes of a stochastic model is usually due to the large number of simulations involved, and it is widely used as a statistical tool in the life sciences.
Calculate the power required for heating a 1.5 kg sample of water for 10 minutes in a thermal system. What is the amount of energy required to raise the temperature of the water from 25°C to 60°C ? How much minimum amount of power does the heater have to supply per unit time? Why does the actual power rating of the heater need to be higher than this minimum amount? (The specific heat of water is 4.18 J/g°C .)
*60 points to anyone who can help*
Answer:
Power= Heat energy\ time
heat energy= mc∆T
specific heat of water = 4180
1.5*4180*(60-25)
=219450
time = 10× 60= 600 secs
power = 219450/600
Power= 365.75 Watt
=0.37 KW
Explanation:
the actual has to be bigger because the heater might be required to handle more ...also to accommodate extra energy.
rank the following gases in order of decreasing rate of effusion. rank from the highest to lowest effusion rate. to rank items as equivalent, overlap them.
It means that the gas with the lowest molecular weight will have the highest effusion rate.
What has the highest rate of effusion?The given gases' effusion rates are listed in order from highest to lowest. The effusion rate of a hydrogen molecule is the highest, whereas that of a hydrocarbon is the lowest.
A gas will effuse faster when it is lighter and more slowly when it is heavier. Helium (He) will have the highest rate of effusion since it has the lowest molecular weight (atomic weight, in this example).
The following equation can be used to compare the rate of effusion for two gases: The effusion rates in this case are inversely related to the square root of the gas molecules' masses. A container contains an amalgam of neon and argon gas.
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The minimum energy that colliding particles must have in order to react is called the activation energy.
True: The minimum energy that colliding particles must have in order to react is called the activation energy.
Activation energy is the minimal amount of extra energy a reactive molecule requires to change into a product. It is also known as the minimal energy required to energise or activate molecules or atoms in order for them to engage in a chemical reaction or transformation.
Factors Influencing Activation Energy There are two things that affect activation energy.
1. Reactants' Nature
Because there is an attraction between the reacting species in the case of an ionic reactant, (Ea) will have a low value. While the value of Ea will be significant in the case of a covalent reactant because energy is needed to break the older bonds.
2. Catalyst effects
Whereas a negative catalyst offers an alternative path where the value of Ea would be high, a positive catalyst offers a way where the value of Ea will be low.
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Importance of planning urban areas
Answer:
Well, it is very important to keep Urban areas organized and avoid building failures. It can even help avoid any bad adjustments that may call accidents so it is way much more better to plan it out carefully and make sure to include correct measurements and all
A city is experiencing a windstorm. The wind has blown away some of the houses in that city. What load bearing factor did the architects of these
houses not calculate correctly?
OA material strength
OB. elasticity
oc design load
OD. safety factor
Answer:
oa
Explanation:
Answer:
safety factor
Explanation:
i got it correct on the test
A country needs to build new power plants to meet
the increasing demand for electric power. One possibility is
to build coal-fired power plants, which cost $1300 per kW
to construct and have an efficiency of 40 percent. Another
possibility is to build clean-burning Integrated Gasification
Combined Cycle (IGCC) plants where the coal is subjected to
heat and pressure to gasify it while removing sulfur and particulate matter from it. The gaseous coal is then burned in a
gas turbine, and part of the waste heat from the exhaust gases
is recovered to generate steam for the steam turbine. The construction of IGCC plants costs about $1500 per kW, but their
efficiency is about 48 percent. The average heating value of
the coal is about 28,000,000 kJ per ton (that is, 28,000,000 kJ
of heat is released when 1 ton of coal is burned). If the IGCC
plant is to recover its cost difference from fuel savings in five
years, determine what the price of coal should be in $ per ton.
Answer:
To determine the price of coal that would allow the IGCC plant to recover its cost difference from fuel savings in five years, we first need to calculate the cost savings of the IGCC plant compared to the coal-fired power plant. The IGCC plant costs $1500 per kW to construct and has an efficiency of 48 percent, while the coal-fired power plant costs $1300 per kW to construct and has an efficiency of 40 percent. The cost savings of the IGCC plant can be calculated as follows:
$1500/kW - $1300/kW = $200/kW
We can then calculate the total cost savings of the IGCC plant over a five-year period by multiplying the cost savings per kW by the total number of kW the plant will generate in five years. For this calculation, we will assume that the plant will generate 1,000 kW of power.
$200/kW * 1000 kW = $200000
Next, we need to calculate the amount of coal that the IGCC plant would need to burn over a five-year period to generate 1,000 kW of power. We know that the average heating value of coal is 28,000,000 kJ per ton, and that the efficiency of the IGCC plant is 48 percent. We can calculate the amount of coal the IGCC plant would need to burn as follows:
1,000 kW / (28,000,000 kJ/ton * 0.48) = 10.7 tons
Finally, we can calculate the price of coal that would allow the IGCC plant to recover its cost difference from fuel savings in five years by dividing the total cost savings by the amount of coal the plant would need to burn over the same period.
$200000 / 10.7 tons = $18,661.04/ton
Therefore, the price of coal that would allow the IGCC plant to recover its cost difference from fuel savings in five years is $18,661.04/ton.
Water flows without friction through a horizontal pipe and enters a section where the cross sectional area is smaller. The velocity profile is uniform at sections 1 and 2.
Water flows without friction through a horizontal
The correct statement about the static pressure p2 relative to p1 and the velocity V2 relative to V1 along the streamline down the center of the pipe is?
(A) p2 < p1 and V2 < V1
(B) p2 < p1 and V2 > V1
(C) p2 > p1 and V2 < V1
(D) p2 > p1 and V2 > V1
(E) The relation between p2 and p1 is indeterminate
Option C. The correct statement about the static pressure p₂ relative to p₁ and the velocity V₂ relative to V₁ along the streamline down the center of the pipe is p₂ > p₁ and V₂ < V₁.
When fluid flows without friction through a horizontal pipe and enters a section where the cross-sectional area is smaller, the static pressure at the smaller area decreases relative to the static pressure at the larger area, whereas the velocity increases. Therefore, the correct statement about the static pressure p₂ relative to p₁ and the velocity V₂ relative to V₁ along the streamline down the center of the pipe is p₂ > p₁ and V₂ < V₁.
This is because the mass flow rate is conserved across any cross-section of the pipe, and this leads to an increase in fluid speed as the cross-sectional area decreases (and vice versa). As a result, the fluid experiences an increase in velocity head and a decrease in pressure head as it moves from the larger area to the smaller area.
Therefore the correct option is C.
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What is a igneous rock easy definition?
Answer:
form when hot, molten rock crystallizes and solidifies
Explanation:
Answer:
form when hot, molten rock crystallizes and solidifies
Explanation:
A car makes a hissing noise each time the A/C system and engine are turned off. Technician A says that the noise is caused by a refrigerant leak. Technician B says that the noise is caused by equalization of system pressures. Who is correct?
Answer:
It's equalization of the system
Explanation: If there was a leak it would likely leak all the time even if the car was turned off. Plus, a system leak bad enough to hear would drain the system of refrigerant very quickly and would no longer cool.
High-temperature refrigeration applications will normally provide box temperatures of?
High-temperature refrigeration applications will normally provide box temperatures of 47 to 60°F.
In the question, asked to specify the range of temperature for High-temperature refrigeration applications for the box.
Refrigerants are the coolants used in refrigeration devices such as ac, refrigerators, etc. Some examples of refrigerant CFCs.
Here, the required range of temperature for High-temperature refrigeration applications varies from 47 to 60°F.
Thus, high-temperature refrigeration applications will normally provide box temperatures of 47 to 60°F.
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How long has Artificial Intelligence (AI) existed?
Answer:
In the 1940s and 50s, a handful of scientists from a variety of fields (mathematics, psychology, engineering, economics and political science) began to discuss the possibility of creating an artificial brain. The field of artificial intelligence research was founded as an academic discipline in 1956
Explanation:
What is in a catalytic converter that makes it so expensive?.
Answer:
A catalytic converter is expensive because it needs rhodium to reduce smog levels. Rhodium, at its current value, is extremely expensive which makes using it in a catalytic converter expensive. To make up for their cost, manufacturers have to increase the price of the catalytic converter.
Explanation:
"The right to live in a home and use the property as long as a person live" is an example of what kind of freehold estate? please explain why?
The right to live in a home and use the property as long as a person lives is an example of a life estate. A life estate is a type of freehold estate where an individual has the right to use and live on a property for the duration of their life or the life of another individual.
What is a freehold estate?
A freehold estate is an estate in land that is owned for an indefinite duration. In other words, it is an estate in land that is held for an unlimited period of time. It is an estate in land that gives an individual absolute ownership over the property, subject to governmental restrictions, such as zoning regulations, or the like.
What is a life estate?
A life estate is a freehold estate in which an individual has the right to use and live on a property for the duration of their life or the life of another individual. Once the individual passes away, the property reverts back to the original owner or to another individual who has the right to take possession of it. The individual who holds the life estate is known as the "life tenant" and has the right to use and enjoy the property as if they own it.
The life tenant has the right to lease the property, collect rent from tenants, and even sell the property during their lifetime. However, they cannot sell the property to another individual and give them ownership beyond their lifetime. Once the life estate has ended, the property reverts back to the original owner or to another individual who has the right to take possession of it.
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celery stalks that are standing in a glass of pure water for several
Celery stalks that are standing in a glass of pure water for several hours become more rigid and stiff. T
he process behind this is known as osmosis. When the celery stalk is placed in the glass of water, water enters the plant through a process known as osmosis.
The water molecules move from an area of high concentration (the glass of water) to an area of low concentration (the celery stalk). This movement of water molecules from an area of high concentration to an area of low concentration through a semipermeable membrane is known as osmosis.
Osmosis is the diffusion of water molecules across a semipermeable membrane from a region of low solute concentration to a region of high solute concentration. The movement of water molecules is driven by the difference in concentration between the two regions. In the case of celery stalks standing in a glass of pure water, the solute concentration inside the celery stalks is higher than that in the water.
Hence, water moves from the glass into the celery stalk, making it more rigid and stiff.
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Tech A says that one approved way to clean dust off brakes is with compressed air. Tech B says that some auto parts may contain asbestos. Who is correct
Tech B is correct it's a verified fact that some auto parts may contain asbestos.
Do auto parts contain asbestos?
Asbestos has been used in a wide range of automotive products, including brakes, clutches, hood liners, gaskets, heat shields, and many others.
Drum and disc brakes were traditionally made with 35% to 60% asbestos. It is still legal in the United States to sell asbestos-containing auto parts, and many brake and clutch parts contain up to 35% asbestos.
Contaminated parts have been found in vehicles of all types, including cars, trucks, motorcycles, buses, trains, and military vehicles. Elevators and other types of transportation machinery also used asbestos brakes.
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in a vehicle you're servicing the fuel pressure drops rapidly when the engine is says that one or more turned off. Technician a says that one or more could be leaking technician b says that a defective check valve in the fuel pump could be the cause who is correct
Answer:
Both Technicians A and B are correct
Explanation:
If the fluid pressure will decrease quickly in a car when the ignition says that one or more has been switched off. One or two could be leaking or the source could be a faulty check mechanism in the catalytic converter.
A shopaholic has to buy a pair of jeans , a pair of shoes l,a skirt and a top with budgeted dollar.Given the quantity of each product and the price per unit determine how many options of each item are present.if required all dollars are spent write the programming in c
Answer:
you might be facing some difficulty in observing this point of division between your question and me
With these systems, input and output devices are located outside the system unit
The computer system unit consists of central processing units (CPU), memory, and other crucial circuitry. With these systems, input and output devices are located outside the system unit. The system unit is a computer's central component, where all essential processes take place.
The computer's primary purpose is to provide the user with computing solutions. Therefore, it needs both input and output devices. Input devices are used to interact with the computer, while output devices are used to view the results of that interaction. A keyboard, mouse, joystick, and scanner are examples of input devices. However, monitors, speakers, and printers are output devices.Input devices are used to interact with the computer, and they send data into the system unit. The input devices send data to the computer, which processes it and then sends the result to the output devices for interpretation by the user. The user can interact with the output devices, which are located outside the system unit and then feed the computer with more data. Furthermore, output devices are responsible for displaying the output of the computer's internal processes. The computer system unit provides a platform for computing processes, and the input/output devices serve to make the computer user-friendly by providing a means of interaction with the system unit. In conclusion, with these systems, input and output devices are located outside the system unit, where they play a crucial role in making the computer system interactive, user-friendly, and productive.
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a commercial refrigerator with r-134a as the working fluid is used to keep the refrigerated space at -35 c by rejecting waste heat to cooling water that enters the condenser at 18 c at a rate of 0.25 kg/s and leaves at 26 c. the refrigerant enters the condenser at 1.2 mpa and 50 c and leaves at the same pressure subcooled by 6 c. if the compressor consumes 3.3 kw of power , determine (a) the mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
At 1.2mpa pressure and 50c
What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).
a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser
T2 = 46.29C - 5
T2 = 41.29C
Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg
(COP)r = 238/53
(Cop) = 4.490
Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
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You are performing a machining operation that approximates orthogonal cutting. Given that the chip thickness prior to chip formation is 0.5 inches and the chip thickness after separation is 1.125 inches, calculate the shear plane angle and shear strain. Use a rake angle of 10 degrees. 21. Suppose in the prior problem that the cutting force and thrust force were measured as 1559 N and 1271 N, respectively. The width of the cut is 3.0mm. Using this new information, calculate the shear strength of the material.
Answer:
A)
shear plane angle = 31.98°
shear strain = cot ( 31.98° ) + tan ( 31.98 - 10 )
B) shear strength = 7339.78
Explanation:
a) Determine the shear plane angle and shear strain
Given data :
Chip thickness before chip formation = 0.5 inches
Chip thickness after separation = 1.125 inches
rake angle ( ∝ ) = 10°
shear plane angle : Tan ∅ = \(\frac{rcos\alpha }{1-sin\alpha }\) ----- ( 1 )
r = chip thickness ratio = 0.5 / 1.125 = 0.4444
back to equation 1 : Tan ∅ = ( 0.444 ) * cos 10 / 1 - sin 10
Tan ∅ = 0.4444 * 0.9848 / 1 - 0.1736 = 0.5296
hence ∅ = tan^-1 ( 0.5296 ) = 31.98°
shear strain : R = cot ∅ + tan ( ∅ - ∝ ) ---------- ( 1 )
R = cot ( 31.98° ) + tan ( 31.98 - 10 )
B) determine the shear strength of the material
cutting force = 1559 N
thrust force = 1271 N
width of cut ( diameter ) = 3.0 mm
shear strength = c + σ.tan ∅
c = cohesion force = 1271 * 3 = 3813
σ = normal stress = F / A = 1559 / π/4 * ( 0.5 )^2 = 1559 / 0.1963 = 7941.94
hence : shear strength of material = 3813 + 7941.94 * 0.6244 = 7339.78
The cars of a roller-coaster ride have a speed of 30 km / h as they pass over the top of the circular track. Neglect any friction and calculate their speed v when they reach the horizontal bottom position. At the top position, the radius of the circular path of their mass centers is 18 m, and all six cars have the same mass.
Answer:
Explanation:
30 we know that radius is 18 and the circumference is 36pi and the time to go around is is 36pi/30=1.2pi≈3.76991118