Make the following use case Sequence Diagram Use case: login ID: UC004 Actors: Students, professors, Director of graduate studies Preconditions: Actors must have valid account Flow of events: 1. Actors enter login page 2. Actors fill all required fields 3. Actors submit login form 4. System validates and check the user information Postconditions: System redirect the actor to the homepage Exception flow : validation failed: 1. The system displays the error message on the from 2. step from 3-4, will be repeated again

Answers

Answer 1

Login ID UC004: Actors enter login page, fill required fields, submit login form; system validates user information, redirects to homepage; if validation fails, display error and repeat steps.

What are the steps involved in the login process for actors in the system?

Title: Login Process

Actors: Students, Professors, Director of Graduate Studies

Preconditions: Actors must have a valid account

Main Flow:

1. Actors navigate to the login page.

2. Actors enter their login credentials (username and password).

3. Actors submit the login form.

4. The system validates the entered user information.

   a. If the validation fails:

      i. The system displays an error message on the form.

      ii. Actors are prompted to fill in the required fields again.

      iii. Steps 2-3 are repeated.

   b. If the validation succeeds:

      i. The system redirects the actor to the homepage.

Postconditions: Actors are redirected to the homepage.

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Related Questions

How do you explain the application of regulations in locations containing baths, showers and electric floor heating, including the requirements needed?

Answers

Answer:

The application of regulations in locations are very important.

Explanation:

The application of regulations in locations are very important in order to gain more benefit from it because people choose those places that are well regulated and having more facilities. If the location has baths, showers, electric floor heaters and other necessities so the people prefer the place over another and increase of clients occurs which give more benefits to the place owners.

An insurance campany offers four different deductible levels-none ,low, medium, and high for its homeowners policyholder and

Answers

The insurance company offers four different deductible levels for its homeowners policyholders and the insured.

What are the deductible levels offered by the insurance company?

The level means an amount of money that the policyholder must pay out of pocket before their insurance coverage kicks in. The 4 different deductible levels offered by the insurance company are none, low, medium, and high.

The policyholder can choose the deductible level based on their budget and the level of risk are willing to assume. A higher deductible level typically results in a lower premium payment and lower deductible level typically results in a higher premium payment.

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for single-sideband phone emissions, what would be the bandwidth of a good crystal lattice filter?

Answers

The bandwidth of a good crystal lattice filter for single-sideband phone emissions would typically be around 2.1 kHz.


The bandwidth of the filter is determined by the number of poles (or stages) in the filter and the cutoff frequency of each stage. A good crystal lattice filter for single-sideband phone emissions would typically have a cutoff frequency of around 2.7 kHz and 8-10 poles, resulting in a bandwidth of around 2.1 kHz.

Crystal lattice filters are used in SSB communication systems to narrow down the bandwidth and provide a better signal-to-noise ratio. The ideal bandwidth for SSB phone emissions varies depending on the specific application and desired audio quality. A range of 2.1 kHz to 2.9 kHz is commonly used, with 2.4 kHz being a typical value for many systems.

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17 Which is a key factor that has contributed to the growth and popularity of big data wered urol Select one: a. Mobile and wireless technology b. Implosion in data growth c. Brick and mortar businesses d. Exponential decay of organizational data

Answers

The key factor that has contributed to the growth and popularity of big data is the implosion in data growth.

The growth and popularity of big data can be largely attributed to the implosion in data growth. The continuous advancement of technology, particularly mobile and wireless technology, has led to an exponential increase in the amount of data being generated and collected.

Mobile devices, such as smartphones and tablets, have become ubiquitous in today's society, enabling people to create and consume vast amounts of data on a daily basis. These devices are equipped with various sensors, cameras, and applications that generate data related to users' activities, preferences, locations, and more. Additionally, the widespread adoption of wireless connectivity has made it easier to capture and transmit data in real-time.

The implosion in data growth has revolutionized the way organizations operate and make decisions. The availability of large volumes of data has opened up new possibilities for data-driven insights, predictive analytics, and business intelligence. Companies can now analyze vast datasets to uncover patterns, trends, and correlations that were previously hidden. This has led to improvements in customer experiences, targeted marketing strategies, operational efficiencies, and innovation in various industries.

In summary, the implosion in data growth, driven by mobile and wireless technology, has played a significant role in the growth and popularity of big data, enabling organizations to harness the power of data for decision-making and competitive advantage.

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HELP QUICK THIS IS TIMED!
Which option justifies using the resource described in the following scenario?
Tyler has designed a cell phone that is made completely of aluminum.
This resource is nonrenewable and must be recycled.
This resource is renewable and can be used forever.
This resource can be recycled to provide parts only once.
This resource contains parts that can be reused forever.

Answers

This resource can be recycled to provide parts only once.

Answer:

This resource is renewable and can be used forever.

Explanation:

HELP QUICK THIS IS TIMED! Which option justifies using the resource described in the following scenario?Tyler

Summary of Possible Weather and Associated Aviation Impacts for Geographic/Topographic Categories Common in the Western United States.
Geographic/Topographic Descriptive Summary of Potential Aviation Impacts
Category of a Possible Weather That Could Impact Based on Weather
of Airport Location Aviation Operations
Along the US West coast,
with steep mountains to the east
(An example of this category is
Santa Barbara Airport, located
on the Southern California Coast,
at an elevation of 10 feet).
Within a valley in elevated terrain
surrounded by high mountains
(An example of this category is
Friedman Memorial Airport, located
in Central Idaho, at an elevation of 5300 feet).
In elevated terrain on the leeside of
high mountains
(An example of this category is Northern Colorado
Regional Airport, located in northern Colorado,
at an elevation of 5000 feet, on the leeside
of the Rocky mountains).

Answers

Answer: answer provided in the explanation section.

Explanation:

Weather phenomenons that would impart Aviation Operations in Santa Barbara -

1. Although winters are cold, wet, and partly cloudy here. It is in general favorable for flying. But sometimes strong winds damage this pleasant weather.

2.  The Sundowner winds cause rapid warming and a decrease in relative humidity. The wind speed is very high surrounding this area for this type of wind.  

3. Cloud is an important factor that affects aviation operations. Starting from April, here the sky is clouded up to November. The sky is overcast (80 to 100 percent cloud cover) or mostly cloudy (60 to 80 percent) 44% on a yearly basis. Thus extra cloud cover can trouble aviation operations.

4. The average hourly wind speed can also be a factor. This also experiences seasonal variations, these variations are studied carefully in the aviation industry. The windier part of the year starts in January and ends in June. In April, the wind speed can reach 9.5 miles per hour.

This and more are some factors to look into when considering wheather conditions that would affect aviation operations.

I hope this was a bit helpful. cheers

A ___ is a device that has a stand leg piped to the top and bottom of a boiler or other pressure vessel.

Answers

A bridle is a device that has a stand leg piped to the top and bottom of a boiler or other pressure vessel.

The force delivered perpendicularly to an object's surface per unit area across which that force is dispersed is known as pressure. In comparison to the surrounding pressure, gauge pressure is the pressure. Pressure is expressed using a variety of units. Usually, pressure is expressed as a force per unit of surface area. The SI unit for measuring pressure is the pascal, and the sign for pressure in physical science is pa. One Newton per square meter of force exerted perpendicularly on a surface is equal to one pascal. In order to assess the product's consistency and quality, it's critical to collect precise data. For these reasons, precise sensors are essential for gathering this data.

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What does the nec section 420. 6 (a) state that the tables are not used for?

Answers

Section 420.6(a) of the National Electrical Code (NEC) states that the tables should not be used for calculating the maximum number of conductors that can be installed in various raceway and cable types.

It is a standard of practice for the safe installation of electrical wiring and equipment in the United States. The NEC is updated every three years to reflect the most up-to-date electrical safety practices.In 2020, the latest NEC was released. The NEC contains regulations for everything from electrical wire size to electrical panel installation. Its goal is to ensure the safe installation of electrical systems in both residential and commercial settings.

Section 420.6(a) is part of Article 420 of the NEC, which covers installation standards for electrical equipment used in a hazardous (classified) location. Hazardous locations are areas where combustible gases, vapors, dusts, or fibers exist in concentrations that could cause a fire or explosion if a source of ignition were present. Section 420.6(a) of the NEC states that the tables used to determine the maximum number of conductors that can be installed in various raceway and cable types should not be used for calculating.

The tables are not a substitute for proper engineering calculations when designing an electrical system. This means that the tables should be used as a general guide, but not as the only means of determining the maximum number of conductors that can be installed.

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A combinational circuit is defined by the following two Boolean functions: F₁ (A, B, C, D) = ABC' + A'BC' + BC'D' + B'CD' F2 (A, B, C, D) = A'B'C' + ABC'D + A'BCD Design the circuit with a decoder and two external OR gates.

Answers

To design the circuit using a decoder and two external OR gates for the given To design the circuit using a decoder and two external OR gates for the given Boolean  functions F₁ and F₂, follow these steps:Start by analyzing each Boolean function and identifying the number of inputs and outputs.

F₁ has four inputs (A, B, C, D) and one output.F₂ also has four inputs (A, B, C, D) and one output.Use a 4-to-16 decoder, which has four inputs and sixteen outputs. Connect the inputs (A, B, C, D) to the decoder inputs.The decoder outputs will be sixteen individual lines. Assign each output line to a unique combination of input values according to the decoder's truth table.For F₁, connect the decoder outputs corresponding to the minterms ABC', A'BC', BC'D', and B'CD' to the inputs of the first OR gate.For F₂, connect the decoder outputs corresponding to the minterms A'B'C', ABC'D, and A'BCD to the inputs of the second OR gate.The outputs of the two OR gates will be the outputs for the Boolean functions F₁ and F₂, respectively.By following these steps and appropriately connecting the decoder outputs to the OR gates, you can design the combinational circuit that implements the given Boolean functions using a decoder and two external OR gates.

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in the same circuit if w/l of the transistor is set so that the transistor drain current is 3 ma, what rd value keeps the transistor at the edge of the ohmic region?

Answers

To keep the transistor at the edge of the ohmic region, the value of RD is calculated using Ohm's law, which states that current is equal to voltage divided by resistance.The equation that determines the RD value of a transistor in saturation mode is the following:

RD = (VDSQ - VDSsat)/ IDQ, where VDSQ is the DC voltage between the drain and the source terminals, VDSsat is the saturation voltage, IDQ is the DC current flowing through the transistor, and RD is the resistor connected to the drain terminal that limits the current through the transistor.In this case, the transistor's drain current is set at 3 mA, which is equal to the IDQ value. Therefore, the equation becomes:

RD = (VDSQ - VDSsat)/3 mAIf we assume that the transistor is operating in the ohmic region, then VDSQ is the supply voltage VDD, and VDSsat is zero. Thus, the equation simplifies to:RD = VDD/3 mAIf we set the drain current at 3 mA and assume that the transistor is operating in the ohmic region, then the RD value that keeps the transistor at the edge of the ohmic region is VDD/3 mA. This value depends on the supply voltage VDD and the physical properties of the transistor. The transistor's W/L ratio can be adjusted to achieve the desired value of IDQ and the corresponding RD value.

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10.16.1: LAB: Interstate highway numbers (Python)


Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the 5 or 95) go north/south, and evens (like the 10 or 90) go east/west. Auxiliary highways are numbered 100-999, and service the primary highway indicated by the rightmost two digits. Thus, I-405 services I-5, and I-290 services I-90.


Given a highway number, indicate whether it is a primary or auxiliary highway. If auxiliary, indicate what primary highway it serves. Also, indicate if the (primary) highway runs north/south or east/west.


Ex: If the input is:


90


the output is:


I-90 is primary, going east/west.


Ex: If the input is:


290


the output is:


I-290 is auxiliary, serving I-90, going east/west.


Ex: If the input is:


0


the output is:


0 is not a valid interstate highway number.


----------------------------------------------------------------------------

The code I have is:


highway_number = int(input())


if 1 <= highway_number <= 999:

if highway_number <= 99:

if highway_number % 2 == 0:

print("I-" + str(highway_number) + " is primary, going east/west.")

else:

print("I-" + str(highway_number) + " is primary, going north/south.")


else:

primary_number = highway_number

highway_number %= 100

if highway_number % 2 == 0:

print("I-" + str(primary_number) + " is auxiliary, serving I-" + str(highway_number) + ", going east/west.")

else:

print("I-" + str(primary_number) + " is auxiliary, serving I-" + str(highway_number) + ", going north/south.")

else:

print(str(highway_number) + " is not a valid interstate highway number.")

--------------------------------------------------------------------------------------------------------------

How do I get 200 to say it is not a valid interstate highway number?

Answers

Hope it helps. Thanks
10.16.1: LAB: Interstate highway numbers (Python)Primary U.S. interstate highways are numbered 1-99.

The program is an illustration of conditional statements.

The program in Python where comments are used to explain each line is as follows:

highwayNumber = int(input("Highway number: "))

#This checks if the highwayNumber is not between 1 and 999 (inclusive)

if (highwayNumber <1 or highwayNumber > 999):

   #If yes, the highwayNumber is invalid

   print(str(highwayNumber)+" is not a valid interstate highwayNumber number.")

#If otherwise

else:

   #This checks if highwayNumber is less than 100

   if (highwayNumber< 100):

       if (highwayNumber%2 == 0):

           #Even highwayNumber are primary going east/west

           print("I-"+str(highwayNumber)+" is primary, going east/west.")

       else:

           #Odd highwayNumber are primary going north/south

           print("I-"+str(highwayNumber)+" is primary, going north/south.")

   #Otherwise

   else:

       if ((highwayNumber%100) % 2 == 0):

           #Even highwayNumber are auxiliary going east/west

           print("I-"+str(highwayNumber)+" is auxiliary, going east/west.");

       else:

           #Even highwayNumber are auxiliary going north/south

           print("I-"+str(highwayNumber)+" is auxiliary, going north/south.");

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Truss ABC is changed by decreasing its height from H to 0.9 H. Width W and load P are kept the same. Which one of the following statements is true for the revised truss as compared to the original truss?
A. Force in all its members have decreased.
B. Force in all its members have increased.
C. Force in all its members have remained the same.
D. None of the above.

Truss ABC is changed by decreasing its height from H to 0.9 H. Width W and load P are kept the same.

Answers

Force in all its members have increased

Force Equation

The vector product of mass (m) and acceleration (a) expresses the quantity of force (a). The force equation or formula can be expressed mathematically as follows:

F = ma In which case,

m = mass a = velocity

It is expressed in Newtons (N) or kilogrammes per second.

The acceleration an is provided by

a = v/t

Where

v = acceleration

t = time spent

As a result, Force can be expressed as follows:

F = mv/t

The formula for inertia is p = mv, which can also be expressed as Momentum.

As a result, force can be defined as the rate of change of momentum.

dp/dt = F = p/t

Force formulas are useful for determining the force, mass, acceleration, momentum, and velocity in any given problem.

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write a complete java program called spikey that prints the following output:
1) Write a complete Java program in a class named Stewie that prints the following output: ////////////////////// || Victory is mine! || \\\\\\\\\\\\\\\\\\\\\\ 2) Write a complete Java program in a class named Spikey that prints the following output:
\/ \\//
\\\///
///\\\
//\\
/\ 3) Write a complete Java program in a class named MuchBetter that prints the following output:
A "quoted" String is 'much' better if you learn the rules of "escape sequences." Also, "" represents an empty String. Don't forget: use \" instead of " ! '' is not the same as "

Answers

The Spikey program in Java prints a pattern using escape sequences for special characters, the Stewie program in Java prints a victory message with a decorative border using backslashes, the MuchBetter program in Java demonstrates the use of escape sequences and quotes within a string.

1) The complete Java program in a class named Spikey that prints the following output is shown below:

class Spikey{    public static void main(String[] args) {        System.out.println("\/ \\\\//");        System.out.println("\\\\\\\///");        System.out.println("///\\\\\\");        System.out.println("//\\\\");        System.out.println("/\\");    } }

2) The complete Java program in a class named Stewie that prints the following output is shown below:

class Stewie{    public static void main(String[] args) {        System.out.println("//////////////////////");        System.out.println("|| Victory is mine! ||");        System.out.println("\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\");    } }

3) The complete Java program in a class named MuchBetter that prints the following output is shown below:

class MuchBetter{    public static void main(String[] args) {        System.out.println("A \"quoted\" String is 'much' better if you learn the rules of \"escape sequences.\" Also, \"\" represents an empty String. Don't forget: use \\\" instead of \" ! '' is not the same as \"");    }}

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while viewing a site plan, you notice that the contour lines have elevation numbers that increase toward the middle. this would indicate a

Answers

while viewing a site plan, you notice that the contour lines have elevation numbers that increase toward the middle. this would indicate a hill

On your map, contour lines indicate the height above sea level at various locations. On a map, the relief depicts the elevational difference between two places. You may calculate the relief or elevation change between two points by removing the elevation differences between them.

On a topographic map, a contour line is a line drawn to denote a dip or elevation of the ground. The vertical separation or elevation difference between contour lines is known as a contour interval. Every fifth contour line has an index contour, which is a bolder or thicker line.

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a risk that happens when populations severely overextend the carrying capacity of their environment.
A) RESOURCE GROWTH
B) CATASTROPHIC COLLAPSE
C)DEMOGRAPHIC TRANSITION
D)INCREASED POPULATION GROWTH

Answers

B is the right answer

PLEASE HELP! THIS IS ROTC QUESTION
What is a small flap on the wing for controlling turns?
A Aileron
B Crankshaft
C Pylons
D Wingspan

Answers

A) Aileron ..........
A) Aileron
The other answers are wrong

Some full-time 4WD sedans use a front engine and transaxle, with a drive shaft connected to drive the rear wheels.
Select one:
True
O False

Answers

Answer:true

Explanation:

Who is responsible for providing working conditions which are free from fall dangers?

Answers

Answer:

I am pretty confident it is the Employer!

Explanation:

They have the responsibility to provide a safe workplace that is free from serious hazards, according to the General Duty Clause of the OSH Act (OSHA Standards)

I hope this helped you!! :D

Answer:

Employers

Explanation:

OSHA requires employers to: Provide working conditions that are free of known dangers. Keep floors in work areas in a clean and, so far as possible, a dry condition. Select and provide required personal protective equipment at no cost to workers.

what documentation is required when a pilot has performed preventive maintenance on an aircraft?

Answers

The documents that is required when a pilot performs preventive maintenance is that

The above functions need to be carried out by the holder of at least one Part 61 Private Pilot Certificate and the person need to have been a registered owner (or co-owner) of the aircraft.

What is the preventive maintenance about?

Note that in the above case, an Authorization to carry out preventive maintenance and also authorization to restart is needed.

If a preventive maintenance is to be performed on an aircraft, the paperwork needs:

The signaturecertificate numberThe kind of certificate held by the individual  that is approving the work, A description of the work that needs to be entered in the aircraft maintenance records.

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Driving next to another vehicle can sometimes take away the option to _____.
A. steer around a hazard
B. improve your mileage
C. conduct your scan
D. manage your tire wear

Answers

Answer: A. steer around a hazard

Explanation: say there was a vehicle next to you on your left and there was a pile of rocks it would prevent you from steer from going straight but instead have you steer around the rocks and cross into another lane that’s what it said in the lesson

Driving next to another vehicle can sometimes take away the option to A. steer around a hazard

What are Traffic Rules?

This refers to the rules and regulations that guide road users and pedestrians to ensure their safety.

Hence, we can see that when driving on the road next to another vehicle, the option to steer around a hazard is taken away, and hence, it is not advisable to do this.

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in a work situation where an electrician’s hands get wet while operating a 120-volt, corded drill, which of the following would be true?

Answers

Where’s the awsers ?...

1)A wheel is used to turn a valve stem on a water valve. If the wheel radius is 1 foot and the stem, (axle), radius is .5 inches, what is the mechanical advantage of the wheel and axle? 2)How much resistance force can ideally be overcome when an effort of 80 lbs is applied to the wheel of the water valve in problem 1? 3)What is the linear distance traveled when a 2.5' diameter wheel makes one revolution? 4)A compressor motor has a 1.00 inch output shaft (axle) that drives a 4.00inch pulley (wheel). If the motor output shaft supplies 24 lbs of force, ideally how much force does the pulley apply to the drive belt wrapped around it? 5) If the belt pulley's force is measured to be 4 lbs, what is the AMA wheel and axle here?6) What is the efficiency of the compressor motor – belt pulley wheel and axle?

Answers

Answer:

for 13

Explanation:

''.''

Explain when single-stranded or multistranded wire should be used.

Answers

single stranded wires are best suited for products that won't encounter much movement;this type of wiring is often only used in smaller gauge wiring applications as it can be difficult to maneuver and utilize a heavy gauge, single conductor wire.

Leticia radio is getting interference whenever she uses it in her dining room. What's the most likely reason/s.

Answers

Answer: D. There is a dimmer switch

Explanation:

Dimmer switches have been known to cause radio interference especially the solid state ones. To counter this, dimmer switches usually come with a component to suppress radio interference, this doesn't work for all dimmers and the cheaper dimmers are usually more prone to this problem.

If Leticia's dining room makes use of a dimmer switch, it is the most probable reason for radio interference.  

A machine used to lift motorcycles consists of an electric winch pulling on one supporting cable of a block and tackle system. The winch can pull with a force of 75 lb. If the system can lift a maximum weight of 860 lb, what is the minimum number of supporting strands for this block and tackle system?

Answers

Answer: So you are dealing with maximum and minimum weights and you want to know what MINIMUM number of supporting strands for this block and tackle system are needed I believe. If so you are dealing with economic imbalances Though we are not worrying about money Right? Right we need physics which Physics study matter and how it moves You would need 8 STRANDS

Explanation: Step By Step

ShopKey Pro presents repair information in a/an _______________________ format or layout.

Answers

ShopKey Pro presents repair information in a customized email template as well as auto repair software format or layout.

What is the Repair Information?

In regards to auto repair information tools, the solution that is known to be made available is the use of ShopKey® Pro with 1Search.

This is know  to be a kind of an exclusive auto repair software that helps to streamlines the search acts to bring closer a special  combination of OEM data as well as experience-based Real Fixes.

Therefore, based on the above, one can say that ShopKey Pro presents repair information in a customized email template as well as auto repair software format or layout.

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IV. An annealed copper strip 9 inches wide and 2.2 inches thick, is rolled to its maximum possible draft in one pass. The following properties of annealed copper are given: strength coefficient is 90,000 psi; true strain at the onset of non-uniform deformation is 0.45; and, engineering strain at yield is 0.11. The coefficient of friction between strip and roll is 0.2. The roll radius is 14inches and the rolls rotate at 150 rpm. Calculate the roll-strip contact length. Calculate the absolute value of thetrue strain that the strip undergoes in this operation. Determine the average true stress of the strip in theroll gap. Calculate the roll force. Calculate the horsepower required.

Answers

Answer:

13.9357 horse power

Explanation:

Annealed copper

Given :

Width, b = 9 inches

Thickness, \($h_0=2.2$\) inches

K= 90,000 Psi

μ = 0.2, R = 14 inches, N = 150 rpm

For the maximum possible draft in one pass,

\($\Delta h = H_0-h_f=\mu^2R$\)

     \($=0.2^2 \times 14 = 0.56$\) inches

\($h_f = 2.2 - 0.56$\)

     = 1.64 inches

Roll strip contact length (L) = \($\sqrt{R(h_0-h_f)}$\)

                                             \($=\sqrt{14 \times 0.56}$\)

                                             = 2.8 inches

Absolute value of true strain, \($\epsilon_T$\)

\($\epsilon_T=\ln \left(\frac{2.2}{1.64}\right) = 0.2937$\)

Average true stress, \($\overline{\gamma}=\frac{K\sum_f}{1+n}= 31305.56$\) Psi

Roll force, \($L \times b \times \overline{\gamma} = 2.8 \times 9 \times 31305.56$\)

                                 = 788,900 lb

For SI units,

Power = \($\frac{2 \pi FLN}{60}$\)  

           \($=\frac{2 \pi 788900\times 2.8\times 150}{60\times 44.25\times 12}$\)

           = 10399.81168 W

Horse power = 13.9357

Which of the following is not a step in a building’s life cycle?


evaluation

maintenance

demolition

resource extraction

Answers

Answer:

resource extraction

Explanation:

common sense

A 1.96 in. diameter rod must be machined on a lathe to a smaller diameter for use as a specimen in a tension test. The rod material is expected to break at a normal stress of 68,787 psi. If the tensile testing machine can apply no more than 797 lb of force to the specimen, calculate the maximum rod diameter that should be used for the specimen.

Answers

Answer:

Explanation:

The maximum normal stress that can be applied to the specimen is given by the ratio of applied force to the area of the cross section of the specimen:

stress = force / area

The area of the cross section of a rod is given by the formula for the area of a circle:

area = πr^2

where r is the radius of the rod. We are given the diameter of the rod, which is 1.96 inches, so the radius is half of that, or 0.98 inches.

The maximum normal stress that the specimen can withstand is 68,787 psi, and the maximum force that can be applied is 797 lb. Substituting these values into the equation for stress gives:

68,787 psi = 797 lb / πr^2

Solving for the radius r gives:

r = √(797 lb / (68,787 psi × π))

Substituting in the value for π and calculating gives:

r ≈ 0.330 inches

The maximum diameter of the rod is twice the radius, so the maximum diameter is:

d = 2r ≈ 0.660 inches

Therefore, the maximum rod diameter that should be used for the specimen is approximately 0.660 inches.

A 1.2 newton block is dropped A 1.2 Newton block is dropped downward from a tall cliff. What is the magnitude and direction
of the force of air friction on the block when it reaches its terminal velocity?

1.2 newtons upward
1.2 newtons downward
0.12 newtons upward
0.12 newtons downward

Answers

Answer:

1.2 Newtons upwards

Explanation:

because the friction is opposite of the magnitude.

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