For a bolted assembly with eight bolts, the stiffness of each bolt is kb = 1.0 MN/mm and the stiffness of the members is km = 2.6 MN/mm per bolt. The bolts are preloaded to 75 percent of proof strength. Assume the external load is equally distributed to all the bolts. The bolts are M6 × 1 class 5.8 with rolled threads. A fluctuating external load is applied to the entire joint with Pmax = 60 kN and Pmin = 20 kN.(a) Determine the yielding factor of safety.(b) Determine the overload factor of safety.(c) Determine the factor of safety based on joint separation.(d) Determine the fatigue factor of safety using the Goodman criterion.
Answers
Answer:
a) 0.978
b) 0.9191
c) 1.056
d) 0.849
Explanation:
Given data :
Stiffness of each bolt = 1.0 MN/mm
Stiffness of the members = 2.6 MN/mm per bolt
Bolts are preloaded to 75% of proof strength
The bolts are M6 × 1 class 5.8 with rolled threads
Pmax =60 kN, Pmin = 20kN
a) Determine the yielding factor of safety
\(n_{p} = \frac{S_{p}A_{t} }{CP_{max}+ F_{i} }\) ------ ( 1 )
Sp = 380 MPa, At = 20.1 mm^2, C = 0.277, Pmax = 7500 N, Fi = 5728.5 N
Input the given values into the equation above
equation 1 becomes ( np ) = \(\frac{380*20.1}{0.277*7500*5728.5}\) = 0.978
note : values above are derived values whose solution are not basically part of the required solution hence they are not included
b) Determine the overload factor of safety
\(n_{L} = \frac{S_{p}A_{t}-F_{i} }{C(P_{max} )}\) ------- ( 2 )
Sp = 380 MPa, At = 20.1 mm^2, C = 0.277, Pmax = 7500 N, Fi = 5728.5 N
input values into equation 2 above
hence : \(n_{L}\) = 0.9191\(n_{L} = 0.9191\)
C) Determine the factor of safety based on joint separation
\(n_{0} = \frac{F_{i} }{P_{max}(1 - C ) }\)
Fi = 5728.5 N, Pmax = 7500 N, C = 0.277,
input values into equation above
Hence \(n_{0}\) = 1.056
D) Determine the fatigue factor of safety using the Goodman criterion.
nf = 0.849
attached below is the detailed solution .
Related Questions
6.03 Discussion: Then & Now - Safety
Discussion Topic
I'm Done
In this unit, you have learned about the evolution of the industry’s machines, through both technology and innovation. These improvements have reduced risk and injury to the Operating Engineers.
Choose one innovation or device.
Explain why you think that technology is the most important advancement in Operating Engineers’ safety.
Answers
Answer:
Information technology is important in our lives because it helps to deal with every day's dynamic things. Technology offers various tools to boost development and to exchange information. Both these things are the objective of IT to make tasks easier and to solve many problems.
Assuming that all other variables remain constant, explain why light of shorter wavelengths will produce a clearer image than light of longer wavelengths.
Answers
When all other variables are held constant, the reason why light of shorter wavelengths produces a clearer image than light of longer wavelengths is due to the optical resolution.
Optical resolution is the capacity of an optical system to distinguish between two points of light that are close together.
A shorter wavelength means a smaller wavelength, and since the minimum distance that can be resolved by an optical system is dependent on the wavelength of the light, shorter wavelengths produce a clearer image than longer wavelengths.
The reason for this is that light behaves as a wave, and the waves of shorter wavelength can be closer together than those of longer wavelength.
The shorter the wavelength of light, the smaller the size of the diffraction rings, which correspond to the smallest points that can be resolved by the system.
Because of this, it is easier to differentiate between two points of light that are close together when the wavelength of light is smaller, which is why shorter wavelengths of light are preferred for high-resolution imaging tasks.
A shorter wavelength of light will produce a clearer image than a longer wavelength of light when all other variables are constant.
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Define hermetic compressor
Answers
Answer:
Hermetic compressors are ideal for small refrigeration systems, where continuous maintenance cannot be ensured.
1 -2 3 -2
2 -5 1 2
3 8 6 2
5 -12 -1 6
Solve this to normal matrix form
Answers
Explanation:
To transform a matrix into its normal form, you can perform row operations on it until it is in row-reduced echelon form. In row-reduced echelon form, the matrix will have the following properties:
1. The first non-zero element in each row is called the pivot, and it is always a 1.
2. The pivot is always the leftmost non-zero element in its row.
3. Each pivot is strict to the right of the pivot in the row above it.
4. All elements below the pivot are zero.
To transform a matrix into its normal form, you can perform the following row operations:
1. Swap two rows.
2. Multiply a row by a non-zero constant.
3. Add a multiple of one row to another row.
Using these row operations, we can transform the given matrix into its normal form:
1. Swap rows 1 and 2:
2 -5 1 2
1 -2 3 -2
3 8 6 2
5 -12 -1 6
2. Subtract 3 times row 2 from row 1:
-1 -11 -2 6
1 -2 3 -2
3 8 6 2
5 -12 -1 6
3. Subtract 5 times row 3 from row 4:
-1 -11 -2 6
1 -2 3 -2
3 8 6 2
0 4 -7 0
4. Divide row 3 by 3:
-1 -11 -2 6
1 -2 3 -2
1 2 2 2
0 4 -7 0
5. Subtract row 3 from row 1:
0 -13 -4 4
1 -2 3 -2
1 2 2 2
0 4 -7 0
6. Divide row 2 by -2:
0 -13 -4 4
-1 1 -1.5 1
1 2 2 2
0 4 -7 0
7. Subtract row 2 from row 3:
0 -13 -4 4
-1 1 -1.5 1
0 1 0.5 1
0 4 -7 0
8. Subtract row 3 from row 4:
0 -13 -4 4
-1 1 -1.5 1
0 1 0.5 1
0 3 -8 -1
9. Subtract 3 times row 4 from row 1:
0 -16 -13 1
-1 1 -1.5 1
0 1 0.5 1
0 3 -8 -1
10. Divide row 1 by -16:
0 1 0.81 -0.0625
-1 1 -1.5 1
0 1 0.5 1
0 3 -8 -1
After these row operations, the matrix is in row-reduced echelon form, which is its normal form. The normal form of the matrix is:
0 1 0.81 -0.0625
0 0 0 0
0 0 0 0
0 0 0 0
question 8 fill in the blank: data mapping is the process of fields from one data source to another.
O Lingking
O Extracting
O Matching
O Merging
Answers
Data mapping is the process of matching fields from one data source to another. Hence option c is correct.
What is data?Data is defined as the information that has been altered to be more easily moved around or processed. Organizations can set baselines, benchmarks, and targets using good data in order to keep moving forward.
The process of matching fields from one database to another is known as data mapping. This is the initial step in making data transfer, integration, and other data management chores easier.
Thus, data mapping is the process of matching fields from one data source to another. Hence option c is correct.
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______ focuses on how jobs, work, and incentive schemes could be designed to improve productivity using industrial engineering methods.
Answers
Scientific management focuses on how tasks, tasks, and incentive plans can be created using industrial engineering techniques to increase efficiency.
In industrial management, what is scientific management?Workflows are examined and combined according to a management concept known as "scientific management." Its main objective is to boost worker productivity and economic efficiency. One of the initial attempts to use science to develop management procedures was this one.
What does the term "scientific management" mean?According to the management principle known as "scientific management," workflows are evaluated and combined. Its primary goal is to increase economic efficiency and worker productivity. This was one of the first initiatives to use research to create management practices.
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An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. At the instant that the two vehicles are abreast of each other, the police car starts to pursue the automobile at a constant acceleration of 1.96 m/s2 . The motorist noticed the police car in his rear view mirror 12 s after the police car started the pursuit and applied his brakes and decelerates at 3.05 m/s2
Answers
An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. At the instant that the two vehicles are abreast of each other, the police car starts to pursue the automobile at a constant acceleration of 1.96 m/s2 . The motorist noticed the police car in his rear view mirror 12 s after the police car started the pursuit and applied his brakes and decelerates at 3.05 m/s2
Find the total time required for the police car to over take the automobile.
Answer:
15.02 sec
Explanation:
The total time required for the police car to overtake the automobile is related to the distance covered by both cars which is equal from instant point of abreast.
So; we can say :
\(D_{pursuit} =D_{police}\)
By using the second equation of motion to find the distance S;
\(S= ut + \dfrac{1}{2}at^2\)
\(D_{pursuit} = (15.65 *12 )+(15.65 (t)+ (\dfrac{1}{2}*(-3.05)t^2)\)
\(D_{pursuit} = (187.8)+(15.65 \ t)-0.5*(3.05)t^2)\)
\(D_{pursuit} = (187.8+15.65 \ t-1.525 t^2)\)
\(D_{police} = ut _P + \dfrac{1}{2}at_p^2\)
where ;
u = 0
\(D_{police} = \dfrac{1}{2}at_p^2\)
\(D_{police} = \dfrac{1}{2}*(1.96)*(t+12)^2\)
\(D_{police} = 0.98*(t+12)^2\)
\(D_{police} = 0.98*(t^2 + 144 + 24t)\)
\(D_{police} = 0.98t^2 + 141.12 + 23.52t\)
Recall that:
\(D_{pursuit} =D_{police}\)
\((187.8+15.65 \ t-1.525 t^2)= 0.98t^2 + 141.12 + 23.52t\)
\((187.8 - 141.12) + (15.65 \ t - 23.52t) -( 1.525 t^2 - 0.98t^2) = 0\)
= 46.68 - 7.85 t -2.505 t² = 0
Solving by using quadratic equation;
t = -6.16 OR t = 3.02
Since we can only take consideration of the value with a positive integer only; then t = 3.02 secs
From the question; The motorist noticed the police car in his rear view mirror 12 s after the police car started the pursuit;
Therefore ; the total time required for the police car to over take the automobile = 12 s + 3.02 s
Total time required for the police car to over take the automobile = 15.02 sec
1 a) b) question If you create a new empty stack and push the values 3, 2, and 1 in that order, and call pop on the stack once, Which value will be returned? a. 1 b. 2 C. 3 correct answer correct answer correct answer Leave blank 1/10 Next> Close
Answers
the value returned by the pop operation in this case is 1.
What value will be returned if you create a new empty stack, push the values 3, 2, and 1 in that order, and call pop on the stack once?Sure! In this scenario, when you create a new empty stack and push the values 3, 2, and 1 in that order, the stack will look like this:
Stack: [1, 2, 3]
Now, when you call the pop operation on the stack, it removes and returns the topmost element. Since 1 is the topmost element in the stack, it will be returned by the pop operation.
After the pop operation, the stack will look like this:
Stack: [2, 3]
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Can you think of a product that you love even though it may not work perfectly? Why do you love it?
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Yes, I can think of a product that I love even though it may not work perfectly.
That product is my old laptop. Even though it may not be as fast as the newer models and it may have some technical difficulties, I still love it because it holds a lot of memories for me. It is the first laptop I ever owned and I used it throughout my college years. It is also the laptop that I used to start my first business and it helped me to achieve a lot of success.
So, even though it may not work perfectly, I still love it because of the sentimental value it holds for me.
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Yes, I can think of a product that I love even though it may not work perfectly.
That product is my old laptop. Even though it may not be as fast as the newer models and it may have some technical difficulties, I still love it because it holds a lot of memories for me. It is the first laptop I ever owned and I used it throughout my college years. It is also the laptop that I used to start my first business and it helped me to achieve a lot of success.
So, even though it may not work perfectly, I still love it because of the sentimental value it holds for me.
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A hydraulic press was installed 10 years ago at a capital investment cost of $70,000. This press presently has a market value of $14,000. If kept the press as an economic life of 3 years, operating expenses of $14,000 and a market value of $10,000 at the of year three. The existing press is being depreciated by the straight-line method using a 15 year write of period with an estimated salvage value for depreciation purposes of $10,000. As an alternative, the currently owned press can be replaced with an improved challenger press which will cost $65,000, to install, have operating expenses of $9,000 per year and have a final market value of $10,000 at the end of its 20-year economic life. If the replacement is made, the challenger press will be depreciated with the straight-line method over a 20 year life with an estimated salvage value of $10,000 at EOY 20. It is thought that a hydraulic press will be needed indefinitely. If the after-tax MARR is 10% per year and the effective income tax rate is 40%, should the defender or the challenger be recommended (30 Points)
Answers
The expanse saved is $5000 and the net present value is $6946.
What is hydraulic press?Hydraulic press is defined as a press machine that produces compressive force with the help of a hydraulic cylinder. The Pascal's law, which states that when pressure is applied to a confined fluid, the pressure changes across the entire fluid, underlies the operation of a hydraulic press.
20 years make up the term.
Since the MARR is 10% after taxes, the discount rate already takes taxes into account.
The initial cost is $51,000 (installment cost of $65,000 minus $14,000 market value of the defender).
Salvage is worth $10,000.
The annual operational expense savings are 14,000 - 9,000, = $5,000.
Differences in depreciation are irrelevant because only cash flows are taken into account by net present value.
The net present value = 42,568 + 1,486 - 51,000 =-$6,946
The present value of the net is negative.
Thus, the expanse saved is $5000 and the net present value is $6946.
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Dynamics of Rigid Bodies:
Problem 1) A car is moving with constant acceleration covers 450 m in a 5 second interval and further it covers 700 m in a 10 second interval. What is the acceleration of the car?
Given:
D/S1= 450 m Total Distance = 450+700 = 1150
T1= 5 seconds
Distance/S2=700m
T2= 10 seconds
when car covers 450m
Formula: ( S=ut + 1/2 at^2)
450m = 5u + 1/2 x a x (5)^2
450m = 5(-5a+1150)+1/2 a (25)
450m = -25+ 575 + 25/2
-575+450=-25/2 a
-125 = -12.5 a
a = +10 m/s^2
Get the value of u :
1150 = 10u + 1/2 x a x (10)^2
1150 = 10u + 1/2 x a x 100
1150 = 10u + 50a
-10u= 50 a - 1150
10u/50a= -1150
u = -5 +1150
Answers
Answer:
The acceleration of the car is +10 m/s^2.
Explanation:
Using the formula S = ut + 1/2at^2, we can calculate the acceleration of the car.
When the car covers 450 m in 5 seconds, we have:
450 = 5u + 1/2 x a x 5^2
Simplifying this equation gives us:
450 = 5u + 12.5a
Next, when the car covers a total distance of 1150 m in 15 seconds, we have:
1150 = 10u + 1/2 x a x 10^2
Simplifying this equation gives us:
1150 = 10u + 50a
We can now solve for u in terms of a using the first equation:
5u = 450 - 12.5a
u = (450 - 12.5a)/5
Substituting this expression for u into the second equation gives:
1150 = 2(450 - 12.5a) + 50a
Simplifying and solving for a gives:
a = 10 m/s^2
Therefore, the acceleration of the car is +10 m/s^2.
Discuss two (2) points related to the importance of Health and
Safety Standards in the wood processing industry.
Answers
Health and safety standards in the wood processing industry are crucial for the safety and protection of workers in the industry. They must follow strict procedures to ensure that they are not exposed to harmful elements, and that their health and well-being are not compromised.
Following are the two points related to the importance of Health and Safety Standards in the wood processing industry.
Employee Safety: Wood processing can be dangerous work, and the workers involved are at risk of injury or illness if the proper health and safety precautions are not taken. Employee safety is a top priority in the industry, and the introduction of health and safety standards helps to ensure that workers are protected from potential hazards such as chemical exposure, dust inhalation, and fire hazards. By following these standards, employers can reduce the likelihood of accidents occurring and minimize the risk of injuries or illnesses to their workers.Compliance: Another important aspect of health and safety standards is compliance. Employers who do not follow these standards can face legal action, fines, and even criminal charges in some cases. Compliance ensures that companies are held accountable for their actions and that they take the necessary steps to protect their workers. In addition, companies that follow health and safety standards are seen as more reputable and trustworthy, which can help to attract and retain employees, and maintain good relationships with clients and customers.In conclusion, health and safety standards in the wood processing industry are essential for the protection of workers and the success of companies in the industry. By prioritizing employee safety and compliance with regulations, employers can minimize the risks associated with wood processing and maintain a safe and healthy work environment.
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Select the option below that contains the correct order or sequence of events. A) 1) Add host to subscription, 2) Use host as report source, 3) Scan hostB) 1) Use host as report source, 2) Add host to subscription, 3) Scan hostC) 1) Add host to subscription, 2) Scan host, 3) Use host as report sourceD) 1) Scan host, 2) Add host to subscription, 3) Use host as report source
Answers
The option that has the correct order or sequence of events are;
1) Scan host.
2) Add host to subscription.
3) Use host as report source.
What are host assets?Host assets are known to be a kind of IP addresses in a person's account. This type of assets is one that can be used as a kind of scan, map and also to report targets.
A person can view the hosts in their account by going the Assets panel to the Host Assets. One can add new hosts by the use of the New menu. The person can also only carry out actions like scanning, mapping and reporting on one's hosts.
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An engineer spends all of his free time (outside of work) gambling illegally. is this a violation of ethical standards?
Answers
Answer: yes
Explanation:
A series RL low pass filter with a cut-off frequency of 4 kHz is needed. Using R-10 kOhm, Compute (a) L. (b)) at 25 kHz and (c) 870) at 25 kHz Oa 0 20 H, 0 158 and 2-30.50 Ob 525 H, 0.158 and 2-30 5 O 025 H, 0.158 and 2-80 5 Od 225 H, 1.158 and -80 5
Answers
Answer:
(a) L ≈ 0.397 H
(b) Z ≈ 52.5 kOhm
(c) θ ≈ 0.025 radians
Step-by-step explanation:
To calculate the values for an RL low pass filter with a cut-off frequency of 4 kHz and using an R-value of 10 kOhm, we can use the following formulas:
(a) L = R / (2 * π * f_c)
(b) Z = √(R^2 + (2 * π * f)^2)
(c) θ = atan((2 * π * f) / R)
Given:
R = 10 kOhm
f = 25 kHz
f_c = 4 kHz
(a) L = R / (2 * π * f_c)
L = 10 kOhm / (2 * π * 4 kHz)
L ≈ 0.397 H
(b) Z = √(R^2 + (2 * π * f)^2)
Z = √((10 kOhm)^2 + (2 * π * 25 kHz)^2)
Z ≈ 52.5 kOhm
(c) θ = atan((2 * π * f) / R)
θ = atan((2 * π * 25 kHz) / 10 kOhm)
θ ≈ 0.025 radians
Therefore, the calculated values are:
(a) L ≈ 0.397 H
(b) Z ≈ 52.5 kOhm
(c) θ ≈ 0.025 radians
how can you add an angle to all extruded faces of a feature
Answers
Stretching a flat, 2D shape vertically to produce a 3D item in a scene is called extrusion. For instance, extruding building polygons by a height value can result in three-dimensional building shapes.
By applying a force that causes the material to flow through an opening or die, a process known as extrusion allows a material to be plastically deformed. If the substance possesses the necessary qualities, it will adopt the cross-sectional profile of the die and keep that form in the final extrudate. The playdough toys used when playing with it are a straightforward illustration of extrusion. Playdough is forced through the die to form a certain shape, and the procedure is known as extrusion. The substance must be forced through the die firmly in order for it to produce the correct form.
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What is the main use of this type of time line
Answers
Answer:
The main use of a timeline in engineering is for project management, product development, and historical analysis. It helps engineers to plan and track progress, ensure requirements are met, and understand the context and history of their field.
Describe the different methods that mine-owners used to remove water from their mines in the 18th century. Explain why the mine-owners were always looking for new methods to remove this water.
Answers
Which of the following best describes the relationship between classes and objects?
A class is an instance of an object.
An object is an instance of a class.
A class is a method of an object.
An object is a method of a class.
Answers
The correct answer is: An object is an instance of a class.
In object-oriented programming, a class is a blueprint or template that defines the properties (attributes) and behaviors (methods) of objects. An object, on the other hand, is a specific instance of a class that can hold its own state and behavior.
Think of a class as a general concept or category, while an object is a specific realization or instantiation of that concept.
For example, you can have a class called "Car" that defines the properties and methods common to all cars. An object of the "Car" class would be a specific car with its own unique characteristics and behavior.
Therefore, the relationship between classes and objects is that a class defines the structure and behavior, while objects are created based on that class to represent specific instances or entities.
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A cantilever beam 2m long carrie a load of 10kn/m over 1m portion from fixed end and a point load of 20kn at free end. Calculate the maximum deflection of the cantilever beam. Take EI=2 x 10^9 KNmm^2
Answers
Answer:
The maximum deflection of a cantilever beam can be found using the equation for a cantilever beam under a point load and a distributed load:
δ = (PL^3)/(3 * EI) + (wl^2)/8 * (2L - wl)
where δ is the maximum deflection, P is the point load (20 kN), L is the length of the beam (2 m), w is the distributed load (10 kN/m), E is the Young's modulus of the material, I is the moment of inertia, and l is the length of the distributed load (1 m).
First, let's convert the loads to N and the length to mm:
P = 20 kN * 1000 N/kN = 20000 N
L = 2 m * 1000 mm/m = 2000 mm
w = 10 kN/m * 1000 N/kN * 1000 mm/m = 10000 N/mm
l = 1 m * 1000 mm/m = 1000 mm
EI = 2 x 10^9 KNmm^2
Next, let's plug the values into the equation for maximum deflection:
δ = (P * L^3)/(3 * EI) + (w * l^2)/8 * (2L - l)
δ = (20000 N * 2000^3 mm^3)/(3 * 2 x 10^9 KNmm^2) + (10000 N/mm * 1000^2 mm^2)/8 * (2 * 2000 mm - 1000 mm)
δ = (20000 * 8 x 10^9 mm^3)/(3 * 2 x 10^9 KNmm^2) + (10000 * 10^6 mm^2)/8 * (4000 mm - 1000 mm)
δ = 1.6 x 10^3 mm + 6.25 x 10^4 mm
δ = 6.41 x 10^4 mm = 64.1 mm
So the maximum deflection of the cantilever beam is 64.1 mm.
Explanation:
What is wrong with the following code?
6
print (what is your name?)
Answers
Answer:
pakipic na lang po question nyo para masagot po
Explanation:
please po di ko masyado gets po e
it is simple the title name after all it is just asking your name
Draw the megnetization current or circut of generatpr characterstistics and explian the shape
Answers
1. When choosing a respirator for your job, you must conduct a
test.
A) Weight
B) Practice
Co Fit
haz
D) Breathing
Answers
Answer:
D
Explanation:
One of the requirements for tennis balls to be used in official competition is that, when dropped onto a rigid surface from a height of 120 in., the height of the first bounce of the ball must be in the range 55 in. <= h <= 60 in. Determine the range of the coefficients of restitution of the tennis balls satisfying this requirement. Any ideas on this?
Answers
Answer:
At temperature is and relative humidity is 86% therefore, the humidity ratio is 0.0223 and the specific volume is 14.289
At temperature is and Relative humidity is 40% therefore, the humidity ratio is 0.0066 and the specific volume is 13.535.
To calculate the mass of air can be calculated as follows:
Now , we going to calculate the volume,
The time which is required to fill the cistern can be calculated as follows:
Now, putting the value in above formula we get,
Therefore, the hours required to fill the cistern is 4.65 hours.
Explanation:
Based on the results of each group records which group makes the most precise measurements of the object
Answers
Answer: Group A: 28.5 g, 28.4 g, 28.5 g
Explanation: They are repeated measurements that give values that are very close together.
A continuous fiber-reinforced composite is to be produced by dispersing 60 vol% carbon fibers in a polycarbonate matrix. if the stress in the polycarbonate matrix when the carbon fibers fail is 45 mpa, the longitudinal elastic modulus of the composite using rule of mixture is
Answers
Answer:
Explanation:
A continuous fiber-reinforced composite is to be produced by dispersing 60 vol% carbon fibers in a polycarbonate matrix. if the stress in the polycarbonate matrix when the carbon fibers fail is 45 mpa, the longitudinal elastic modulus of the composite using rule of mixture
could you please answer this question clearly?
Answers
variable head permeability ?
Answers
Answer:
The variable head permeability test is one of various methods for determining soil permeability. It is used to determine the permeability of relatively new soil. Permeability refers to a soil's ability to enable water to pass through its pores or spaces.
Explanation:
Exercise 7.1.7: Car Inventory Spoints Let's Go A car company wants to keep a list of all the cars that they have in stock. The company has created a Car class that stores important information about each of their cars. Initialize an ArrayList called inventory that stores each Car that the company has in stock. Status: Not Submitted 7.1.7: Car Inventory Save Submit + Continue iii FILES о со Ол еш мн import java.util.ArrayList; 2 public class CarTracker 3- { public static void main(String[] args) 5 { 6 //Initialize your ArrayList here: 7 } CarTracker.java Car.java Status: Not Submitted 7.17: Car Inventory Save Submit + Continue !!! 2-{ FILES 1 public class Car 3 String name; String model; 5 int cost; public Car (String name, String model, int cost) { this.name 10 this.model = model; this.cost = cost; 12 } CarTracker.java Car.java 6 7 8- 9 = name; 11 13
Answers
Answer: To initialize an ArrayList called inventory that stores Car objects in Java, you can use the following code:
import java.util.ArrayList;
public class CarTracker
{
public static void main(String[] args)
{
// Initialize your ArrayList here:
ArrayList<Car> inventory = new ArrayList<>();
}
}
The ArrayList is initialized using the ArrayList<Car> syntax, where Car is the type of objects that will be stored in the ArrayList. The ArrayList is then instantiated using the new ArrayList<>() syntax. You can then add Car objects to the ArrayList using the add method. For example, the following code adds a Car object with the name "Ford", model "Fiesta", and cost $15,000 to the inventory ArrayList:
// Add a Car object to the inventory ArrayList
Car car1 = new Car("Ford", "Fiesta", 15000);
inventory.add(car1);
You can add as many Car objects to the inventory ArrayList as you need. To retrieve a Car object from the ArrayList, you can use the get method and specify the index of the Car object you want to retrieve. For example, the following code retrieves the first Car object in the inventory ArrayList:
// Get the first Car object in the inventory ArrayList
Car car = inventory.get(0);
You can then access the fields of the Car object using the dot notation, as shown in the following code:
// Print the name, model, and cost of the Car object
System.out.println("Name: " + car.name);
System.out.println("Model: " + car.model);
System.out.println("Cost: $" + car.cost);
This code would output the name, model, and cost of the Car object.
Two pipes on the same elevation convey water and oil specific gravity 0.88 respectively. They are connected by a U-tube manometer with a manometric liquid having a specific gravity of 1.25. If the manometric liquid in the limb connecting the water pipe is 2m higher than the other find the pressure difference in two pipes
Answers
The difference in pressure between the pipe will be 6.951 KN/m².
How to calculate the pressure?P1 will be:
= 2 X 9.81 X 1.25 X 1000 + (h-2) x 9.81 x .88 x 1000
P1 = 2 x 9.81 x 1.25 x 1000 + (5-2) x 9.81 x .88 x 1000 (where h =5)
= 50423.4 N/m2 = 50.423 KN/m²
Now on the right limb pressure at this level (A-A) is
P2 = h x 9.81 x .88 x1000 = 5 x 9.81 x .88 x 1000 (where h =5)
= 43472 N/m2 = 43.472 KN/m²
Thus pressure difference = P1- P2 will be:
= (50.423 - 43.472)
= 6.951 KN/m²
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