A system is available for the ultrafiltration of protein solutions. On Monday, you filter a globular protein with 12,000 Da molecular weight, and it is fully retained. On Tuesday, you filter a 120,000 Da molecular weight globular protein at the same molar concentration and using the same membrane. The transmembrane flux was the same on both days. Assuming identical boundary layer thicknesses for both filtrations, in which case will the polarization modulus cw /cb be greater? What is the relationship between the polarization moduli for the two cases?

Answers

Answer 1

The polarization modulus cw/cb will be greater when filtering the globular protein with a molecular weight of 12,000 Da compared to the 120,000 Da protein. The relationship between the polarization moduli for the two cases is that the modulus will be higher for the filtration of the smaller molecular weight protein.

The polarization modulus, represented as cw /cb, is a measure of the concentration polarization effect during ultrafiltration. It is defined as the ratio of the concentration of solute at the membrane surface (cw) to the bulk concentration of solute in the feed (cb). A higher polarization modulus indicates a greater concentration polarization effect.

In the given scenario, when filtering the 12,000 Da protein, it is fully retained by the membrane. This means that the protein molecules cannot pass through the membrane, leading to a higher concentration of protein at the membrane surface (cw) compared to the bulk concentration (cb). As a result, the polarization modulus cw /cb will be greater for the 12,000 Da protein filtration.

On the other hand, when filtering the 120,000 Da protein, it is not fully retained by the membrane. Some protein molecules can pass through the membrane, resulting in a lower concentration of protein at the membrane surface (cw) compared to the bulk concentration (cb). Hence, the polarization modulus cw /cb will be lower for the 120,000 Da protein filtration.

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Related Questions

Which gas is released in the SMAW process causing a
shielding affect on the molten weld pool?

•nitrogen

•carbon dioxide

•argon

•hydrogen

Answers

Argon ( I’m not sure )

what are the wind energy meausering devices define

Answers

Anemometer

Explanation:

An anemometer is a device used for measuring wind speed and direction. It is also a common weather station instrument. The term is derived from the Greek word anemos, which means wind, and is used to describe any wind speed instrument used in meteorology.

A commercial jet is flying at a standard altitude of 35,000 ft with a velocity of 550 mph: (a) what is the Mach number? (b) should the flow be treated as incompressible, why or why not?

Answers

Answer:

Mach number = 0.68168

The flow should be treated as compressible.

Explanation:

Given that:

The altitude of a commercial jet = 35000

The properties of air at that given altitude are as follows:

Pressure = 24.577 kPa

Temperature T = 50.78176° C

Temperature T = ( 50.78176 + 273 )K = 328.78176 K

\(\varphi = 0.38428 \ kg/m^3\)

The velocity is also given as: 550 mph = 245.872 m/s

Therefore, the sonic velocity is firstly determined by using the formula:

\(a = \sqrt{ \vartheta \times R \times T\\)

\(a = \sqrt{1.4 \times 287 \times 323.78176\)

\(a = \sqrt{130095.5112\)

a = 360.68755 m/s

Then, we can calculate the Mach number by using the expression:

\({Mach \ number = \dfrac{V}{a}}\)

\(Mach \ number = \dfrac{245.872}{360.68755}\)

Mach number = 0.68168

b) Ideally, all flows are compressible because the Mach number is greater than 0.3, suppose the Mach number is lesser than 0.3, then it is incompressible.

What is the maximum number of points a player can score during a frame of snooker while curving around at a 45 degree angle going at a speed of 2 miles per hour with the wind speed of 2 mph on a rug coated snooker table?

Answers

In snooker, the maximum number of points that can be scored during a single frame is 147. This is achieved by potting all 15 red balls, each worth 1 point, and subsequently potting the colored balls in sequence: yellow (2 points), green (3 points), brown (4 points), blue (5 points), pink (6 points), and black (7 points). Each color is then returned to its original position and can be potted again for additional points.

The angle and wind speed mentioned in your question are not relevant to determining the maximum number of points in a snooker frame. The speed and direction of the balls are controlled by the player's shots, and the rug coating on the table doesn't affect the scoring.

So, regardless of the angle, wind speed, or table surface, the maximum number of points that can be scored in a frame of snooker is 147.

When TCP/IP translates an application layer address into an IP address, it sends a special __________ to the nearest DNS server.
a. broadcast message
b. DNS request packet
c. SNA packet
d. IPX message
e. X.25 packet

Answers

b. DNS request packet. A DNS query, often referred to as a DNS request, is a request for data sent from a user's computer to a DNS server by a DNS client. A DNS request is often performed to obtain the IP address linked to a domain name.

The DNS system on the Internet controls the mapping between names and numbers, much like a phone book. DNS servers manage which server a user will access when they enter a domain name into their web browser by converting requests for names into IP addresses. These are referred to as inquiries.

Instead of utilizing numerical IP addresses, the Domain Network System (DNS) protocol enables network devices and Internet users to find websites.

Types of DNS requests- Recursive Query: A query that seeks an answer even if one cannot be located. A query that is iterative does not require a resolution.

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What Modern-Day Railroad Runs From Chicago to Seattle?

Answers

Answer:

The empire builder

Explanation:

When do you need to apply for program completion and review?

Answers

Answer:

1/2 semesters before completion

Explanation:

Program completion and review are both a necessary part and parcel of a successful completion of any program. The recommended period for applying for program completion and review is one to two semesters before the program is to be completed. This is mandatory, so that there is different time span for review and any other issues that are needed to be carried out. And then afterwards, finally the certificates are then issued to the qualified person.

. An ideal vapor compression refrigeration cycle operates with a condenser pressure of 900 kPa. The temperature at the inlet to the compressor is -5oC. If this device operates using R134a as the working fluid, calculate the actual COP of this device as well as the maximum theoretical COP.

Answers

Answer:

Actual COP = 5.368

Maximum theoretical COP = 6.368

Explanation:

Given - An ideal vapor compression refrigeration cycle operates with a condenser pressure of 900 kPa. The temperature at the inlet to the compressor is -5oC.

To find -  If this device operates using R134a as the working fluid. Calculate the actual COP of this device as well as the maximum theoretical COP.

Proof -

Given that,

An ideal vapor compression refrigeration cycle operates with a condenser pressure of 900 kPa.

From Refrigerant 134-a Table

At T1 = -5°C

h1 = 247.505 KJ/kg

S1 = 0.93434 KJ/kg

At P2 = 900 KPa

S1 = S2

h2 = 274.679 Kj/Kg

h3 = h4 = 101.61 KJ/g

So,

Compressor work (Wc) = h2 - h1

                                       = 274.679 - 247.505

                                       = 27.174

⇒Compressor work (Wc) = 27.174 KJ/kg

Now,

Heat out (Qout) = h2 - h3

                          = 274.679 - 101.61

                          = 173.069

⇒Heat out (Qout) = 173.069 KJ/kg

Now,

Heat input (Qin) = h1 - h4

                          = 274.505 - 101.61

                          = 145.895

⇒Heat input (Qin) = 145.895 KJ/kg

So,

Actual COP at the refrigerator is -

(COP)R = (Qin)/(Wc)

            = (145.895)/ (27.174)

            = 5.368

Actual COP = 5.368

Now,

Maximum theoretical COP is -

(COP) = (Qout)/(Wc)

          = (173.069)/ (27.174)

          = 6.368

Maximum theoretical COP = 6.368

package pack1; class X protected int i = 1221; void methodOfX() { } } public class MainClass } System.out.println(i); public static void main(String[] args) { X x = new X(); System.out.println(x.i);
x.methodOfX();
do you think the above program is written correctly?if yes, what will be the output?

Answers

The program is not written correctly and no output generated is `1221`.

The program has syntax errors, and it needs correction before execution.

Here is the corrected program:

package pack1;class X {  protected int i = 1221;  void methodOfX() { } }public class Main

Class {  public static void main(String[] args) {    X x = new X();    System.out.println(x.i);    x.methodOfX();  }}

The output of the program will be:

`1221`Since `i` is declared as protected in class `X`, it is accessible in class `MainClass`. The statement `System.out.println(x.i)` will print the value of `i`, which is `1221`.

Then, the method `methodOfX()` of class `X` is invoked using the object `x` of class `X`. However, since `methodOfX()` is empty, there will be no output for this statement.

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Which of the following is false about most machine learning models?


They require numbers or collections of numbers as input.


They are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc)


They are trained by iteratively adjusting their parameters to minimize a loss function.


Once trained, their model parameters can be used to make new predictions in a process called a “model inference algorithm.”

Answers

The false statement about most machine learning models is that: B. they are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc).

What is machine learning?

Machine learning (ML) is also referred to as deep learning or artificial intelligence (AI) and it can be defined as a subfield in computer science which is typically focused on the use of data-driven techniques (methods), computer algorithms, and technologies to develop a smart computer-controlled robot with an ability to automatically perform and manage tasks that are exclusively meant for humans or solved by using human intelligence.

Generally speaking, machine learning models are designed and developed to accept numerical data (numbers) or collections of numerical data (numbers) as an input.

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Why would gru make an balloon animal and give it to a child only to pop that same baloon animal a moment later

Answers

Gru may have made the balloon animal to fulfill his obligation as an entertainer or to gain the child's trust.

However, popping the balloon may have been part of his plan to create a sense of surprise or to show the child that things are not always what they seem.

Gru is known for his unpredictable and mischievous behavior, so popping the balloon may have been a way to showcase his personality and to leave a lasting impression on the child. Additionally, it may have been a way for Gru to teach the child a lesson about the fleeting nature of happiness or the importance of not becoming too attached to material possessions.

Ultimately, Gru's motivations for making and popping the balloon animal may be complex and multifaceted, but it likely reflects his unique approach to life and his desire to leave a lasting impact on those around him.

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Sarah fenced in her backyard. The perimeter of the yard is 18 feet, and the width of the yard is 4 feet. Use the perimeter formula to find the length of the rectangular yard in inches: p = 2l + 2w. (1 foot = 12 inches).

Answers

Answer: 72 inches!

Explanation:

The length of the rectangular yard in inches is 72 inches. This is calculated by using the perimeter formula, p = 2l + 2w, and substituting the known values: p = 2(18 feet) + 2(4 feet). This simplifies to p = 36 feet + 8 feet, which is equal to 44 feet. To convert this to inches, we multiply 44 feet by 12 inches per foot, which gives us a total of 528 inches. Therefore, the length of the rectangular yard in inches is 72 inches.

Match Longitudinal bar diameter with minimum size of fitment
1) Up to N20 single bar
2) N24 to N36 single bar
3) Bundle bars
a) N6
b) N10
c) N12

Answers

The match for longitudinal bar diameter with minimum size of fitment is Up to N20 single bar - b) N10, N24 to N36 single bar - c) N12, and Bundle bars - a) N6.

The size and design of the reinforcing bars used in construction influence how closely the longitudinal bar diameter matches the minimal size of fitting.

The minimum size of fitment is normally N10, which refers to a minimum bar diameter of 10mm, for bars up to N20, which refers to smaller diameter bars.

These more compact bars are frequently employed for lighter loads or in locations where less reinforcing is required.

The lowest size of fitment is often N12, which denotes a minimum bar diameter of 12mm, with larger bars ranging from N24 to N36, which are larger diameter bars.

The minimum size of fitment for bundle bars, which are many bars bundled together, is N6, which translates to a minimum bar diameter of 6mm.

Thus, this can be the match for the given scenario.

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Consider that you have a code of 200,000 instructions which is executed using a 16 stages pipeline. It is expected that 20% of the instructions will cause an exception. In order to handle the exception, there is an exception handler which is using 20 cycles to execute (includes the flushing and reloading and the actual handling of the exception). The pipeline frequency is 2 GHz

i) How many cycles does it take to execute the code?

ii) What is the average CPI for this code?

iii) How long does it take to execute the code?

Answers

Answer:

3

Explanation:

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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the source for mechanical motion supplied to a generator is referred to as the ? .

Answers

The source for mechanical motion supplied to a generator is referred to as the prime mover.

A generator is a device that converts mechanical energy into electrical energy. The mechanical energy is typically supplied by a prime mover, which is any device that can supply the necessary rotational force to turn the generator's rotor. The prime mover can be powered by various sources of energy, such as fossil fuels, nuclear energy, hydroelectric power, wind power, or solar power.

The type of prime mover used depends on the specific application and available resources. For example, in a traditional power plant, the prime mover is typically a steam turbine that is powered by burning fossil fuels or nuclear reactions. In a hydroelectric power plant, the prime mover is the water that drives the turbine. In a wind turbine, the prime mover is the kinetic energy of the wind that turns the rotor blades.

Regardless of the type of prime mover used, the goal is to provide the necessary mechanical motion to turn the generator's rotor. The rotor is surrounded by a stator, which contains a series of electromagnets that produce a magnetic field. As the rotor turns, it generates an electrical current in the stator coils through the process of electromagnetic induction. This current is then transmitted through power lines to homes, businesses, and other electrical loads.

In summary, the prime mover is the source of mechanical motion that is supplied to a generator to produce electrical energy. The type of prime mover used depends on the specific application and available resources.

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*sapnap teaching you how to drive*
"Skeppy and Badboyhalo are crossing the street, what do you hit?"
"Skeppy, I would never hurt Bad."
"whA- THE BRAKES YOU HIT THE BREAKS!!"
*Dream wheezing from the back*

Answers

Answer:

yes dream

Explanation:

Answer:

Me: "i would just hit you, sapnap. In the freaking face" LOL

Airship is to operate at 20 m/s in air at standard conditions. a 1/20 scale model is to be tested in a wind tunnel atthe same temperature to determine drag.find:(a) criterion needed to obtain dynamic similarity(b) air pressure required if air speed in wind tunnel is 75 m/s(c) prototype drag if the drag on the model is 250 n

Answers

The prototype drag would be 25,000 N. According to Bernoulli's principle, when the velocity of a fluid increases, the pressure of the fluid decreases.

To obtain dynamic similarity between the model and the prototype, the Reynolds numbers based on the length of the prototype and the model must be equal. The Reynolds number is a dimensionless quantity that is used to predict whether the flow around an object will be laminar or turbulent. Bernoulli's principle states that the total energy of a fluid flowing through a system is constant. The total energy is made up of the kinetic energy (the energy of motion) of the fluid and the potential energy (the energy of position) of the fluid.

To find the criterion for dynamic similarity, you need to determine the length of the prototype and the model, and then calculate the Reynolds number for each using the following equation:

Re = (rho * v * L) / mu

where Re is the Reynolds number, rho is the density of the fluid, v is the velocity of the fluid, L is a characteristic length of the object, and mu is the dynamic viscosity of the fluid.

To find the air pressure required in the wind tunnel, you need to first determine the density of the air and the velocity of the air, and then use the following equation:

P = (1/2) * rho * v^2

where P is the pressure, rho is the density of the air, and v is the velocity of the air.

To find the prototype drag, you need to determine the scale factor between the model and the prototype, and then use the following equation:

F_p = F_m * (L_p / L_m)^2

where F_p is the prototype force, F_m is the model force, L_p is a characteristic length of the prototype, and L_m is a characteristic length of the model. In this case, the prototype force is the prototype drag and the model force is the drag on the model.

F_p = F_m * (L_p / L_m)^2

where F_p is the prototype force, F_m is the model force, L_p is a characteristic length of the prototype, and L_m is a characteristic length of the model. In this case, the prototype force is the prototype drag and the model force is the drag on the model.

F_p = 250 N * (10 / 1)^2 = 25,000 N

This means that the prototype drag would be 25,000 N.

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Many of the conductance testers have integrated printers.
Select one:
O True
O False

Answers

The answer is true.

To evaluate the battery's conductivity, a conductance tester injects low-frequency signals into it. The current carrying capability of a battery increases with capacity.

What role of conductance testers in integrated printers?

Battery conductance testers operate by passing a small amount of current through the battery to measure its electrical resistance.

They then use this information, a mathematical model of the battery, and any data the user may have entered to determine the battery's performance parameters.

By putting something between the wire's two free ends, you can test a material. Put one of the wire's free ends on one side of the object and the other on the other side. 10. If the bulb illuminates, the substance is conductive; if not, it is an insulator.

Therefore, it is true that Many of the conductance testers have integrated printers.

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Which of the following is not a characteristic of an external combustion engine?
A. External pistons are used.
B. Fuel is sent directly to the engine.
C. Boiler burns fuel to produce steam.
D. Steam is sent to the engine to produce power.

Answers

Answer is B. Fuel is sent directly to the engine :)

On your primary server and create the directory /test/mynfs1, and in the directory create the file mynfs.file such that user19 is the user and group owner of the folder and file. Use the ls command to verify it show user19 in both the user and group owner columns.

Answers

To create the directory /test/mynfs1, you can use the following command.

mkdir -p /test/mynfs1

Next, you can create the file mynfs.file inside the directory using the touch command:

touch /test/mynfs1/mynfs.file

To set the user and group owner as user19 for both the folder and the file, you can use the chown command:

chown user19:user19 /test/mynfs1 /test/mynfs1/mynfs.file

Finally, to verify the ownership, you can use the ls command with the -l option to display detailed information about the directory and file:

ls -l /test/mynfs1

The output should show user19 as the user and group owner for both the directory and the file.

Please note that these commands assume you have the necessary permissions to create directories and files in the specified location.

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what is the name of the nasa instrument that was recently launched by spacex with the goal of studying dust on earth?

Answers

Answer:

DUST

Explanation:

the name of the nasa instrument that was recently launched by spacex with the goal of studying dust on earth is called DUST

Which kinds of cable consists of one or more twisted-pair wires bundled together?

Answers

Try answering with a Twisted-pair cable.

(a) Client, consultant and contractor are three key players in any construction project. Requirement, input, information and data related to the project are conveyed, transmitted and shared among them. With the aid of a flowchart, explain the interaction among them at every stage of the project (from inception to completion). (12 marks)

Answers

The interaction between client, consultant, and contractor is important in any construction project.

The interaction among the client, consultant, and contractor is divided into four phases, namely, pre-contract, design, construction, and post-construction phases. In the pre-contract phase, the client provides a brief of the project, and the consultant provides professional advice and prepares a feasibility report.

After the feasibility report is approved, the consultant prepares tender documents and contracts that are submitted to the contractor for bidding. In the design phase, the consultant designs the project, and the client approves the design. The contractor reviews the design and determines the cost.

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What signal propagation phenomena causes the diffusion, or the reflection in multiple different directions, of a signal?

Answers

In the radio communication system, multipath is the propagation phenomenon that causes diffusion or reflection in multiple different directions of a signal.

Multipath is a propagation mechanism that impacts the propagation of signals in radio communication. Multipath results in the transmission of data to the receiving antenna by two or more paths. Diffusion and reflection are the causes that create multiple paths for the signal to be delivered.

Diffraction occurs when a signal bends around sharp corners; while reflection occurs when a signal impinges on a smooth object. When a signal is received through more than one path because of the diffraction or reflection, it creates phase shifting and interference of the signal.

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In which situation is a are food service workers not required to wash their hands?

Answers

Answer:

when wearing gloves?

Explanation:

?

or when off duty

Answer:

When off duty

Explanation:

Enumerate three merits of a re-heat power cycle​

Answers

Here are three merits or advantages of a reheat power cycle:

Higher efficiency - Reheating the steam between high pressure and low pressure turbines increases the amount of useful work that can be extracted from the steam. This leads to higher overall cycle efficiency compared to a simple Rankine cycle.

Higher power output - Since more work is extracted from the steam, a reheat cycle can produce more power from the same heat input compared to a simple Rankine cycle. This makes reheat cycles useful for high-power applications.

Better matching of turbine stages - Reheating the steam allows the high pressure and low pressure turbine stages to be matched more optimally to the steam conditions. This helps reduce losses and further improve efficiency.

In summary, the key benefits of a reheat power cycle are:

Higher efficiencyHigher power outputBetter matching of turbine stages for reduced losses

These advantages come from reheating the steam between the high and low pressure turbines, extracting more work and better utilizing the properties of the steam.

change the order for the genre sort level to the following custom list: comedy, drama, adventure, horror, and foreign.

Answers

To change the order of a genre sort level to the custom list you provided (comedy, drama, adventure, horror, and foreign), you will need to access the settings or options for the system or software you are using to organize and categorize your media.

Here are some general steps you can follow to change the genre sort level in a system or software:

Navigate to the section of the system or software where you can manage or modify your media categories or genres.

Look for an option to edit or customize the genre sort level. This may be located in a settings or preferences menu, or it may be accessible through a toolbar or menu within the genre management section.

Select the option to edit or customize the genre sort level. This may bring up a list of genres that you can rearrange or modify.

Drag and drop the genres in the list into the order you want them to appear. Alternatively, you may need to use up and down arrow buttons or other controls to reorder the genres.

Save your changes. The system or software should now use the custom genre sort level you have defined when organizing and categorizing your media.

Note that the specific steps and options for changing the genre sort level may vary depending on the system or software you are using. If you are having trouble finding the option to customize the genre sort level, you may need to refer to the user manual or online documentation for the system or software in question.

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Abrupt head movement during a prolonged constant rate turn in IMC or simulated instrument conditions can cause
1. Coriolis illusion.
2. elevator illusion.
3. inversion illusion.

Answers

Abrupt head movement during a prolonged constant rate turn in IMC (Instrument Meteorological Conditions) or simulated instrument conditions can cause the "Graveyard Spin" or "Graveyard Spiral" illusion.

which is characterized by a pilot feeling like the aircraft is in a level flight or climbing, when in fact it is in a descending turn. This illusion is caused by the pilot's inner ear sensing a prolonged turn, while the visual cues from the cockpit instruments indicate level flight or climbing.

As a result, the pilot may inadvertently bank the aircraft in the opposite direction, exacerbating the turn and leading to a dangerous spiral descent.

Therefore, none of the options mentioned in the question (Coriolis illusion, elevator illusion, and inversion illusion) are the correct answer.

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A diameter shaft contains a deep U-shaped groove that has a radius at the bottom of the groove. The maximum shear stress in the shaft must be limited to . If the shaft rotates at a constant angular speed of , determine the maximum power that may be delivered by the shaft.

Answers

Answer:

hello your question lacks the required figures here is the complete question

A 1.25-in diameter shaft contains a 0.25-in deep U-shaped groove that has a 1/8-in radius at the bottom of the groove. The maximum shear stress in the shaft must be limited to 12000 psi . If the shaft rotates at a constant angular speed of 6Hz , determine the maximum power that may be delivered by the shaft.

Answer: max power delivered by shaft = 4.045 hp

Explanation:

Determine The maximum power that can be delivered by the shaft

using the given data

diameter of shaft ( D ) = 1.25 inches

depth of U-shaped groove = 0.25 inches

radius of U-shaped groove = 1/8 inches = 0.125 inches

maximum shear stress in shaft = 12000 psi

shaft angular speed at frequency of  6 Hz

firstly calculate

The minor diameter (d) = 1.25 - 2(0.25 ) = 0.5 inches

Ratio = radius of groove / minor diameter = 0.125 / 0.75 = 0.167

Ratio, = diameter of shaft / minor diameter = 1.25 / 0.75 = 1.667

k = 1.39 from stress concentration factors graph

calculate the maximum shear stress produced by the torque in the minor diameter of the shaft

Tmax = \(\frac{Tc}{J}\)  -----------equation 1

where Tc = 16T

J = \(\pi d^{3}\)

equation 1 becomes( Tmax )  =  \(\frac{16*T}{\pi *0.75^3}\)

also Tmax = K * Tmin -------- equation 2

      1.39 * \(\frac{16*T}{\pi *0.75^3 } \leq 1200\)

      T ≤ 715.122 Ib-in

      Tmax = 59.593 Ib-ft ( max shear stress )

Finally calculate the max power transmitted by the shaft

P max = 2\(\pi\)fTmax = 2\(\pi\) * 6 * 59.593

therefore Pmax = 2246.6 Ib-ft/s

                           = 4.045 hp

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PLEASE HELP BRAINLIEST IF CORRECT Some of the steps in the derivation of the quadratic formula are shown.Step 4: StartFraction negative 4 a c + b squared Over 4 a EndFraction = a ( x + StartFraction b Over 2 a EndFraction) squared Step 5: (StartFraction 1 Over a EndFraction) StartFraction b squared minus 4 a c Over 4 a EndFraction = (StartFraction 1 Over a EndFraction) a (x + StartFraction b Over 2 a EndFraction) squaredStep 6: StartFraction b squared minus 4 a c Over 4 a squared EndFraction = ( x + StartFraction b Over 2 a EndFraction) squaredStep 7: StartFraction plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction = x + StartFraction b Over 2 a EndFractionWhich best explains why the expression plus or minus StartRoot b squared minus 4 a c EndRoot cannot be rewritten as b plus or minus StartRoot negative 4 a c EndRoot during the next step?A: Negative values, like 4ac, do not have a square root.B: The symbol prevents the square root from being evaluated.C: The square root of terms separated by addition and subtraction cannot be calculated individually.D: The entire term b2 4ac must be divided by 2a before its square root can be determined. Evaluate n. 8m + 4P for m = 4, n = 2, and p = 3. Hormones are proteins uses as-chemical receptors-chemical messengers-sugar A sample of X is carefully weighed and put inside a sealed calorimeter. The calorimeter is heated electrically, and the amount of heat added determined by monitoring the electrical current used. The temperature of X is carefully measured, and from the temperature change and the amount of heat added the value of Hmay be calculated.Is this a physical or chemical property? Solve: 9x - 3 = 729 x = Which combination could the coach buy?Remember: There are 400 spaces.x = the number of regular carsy = the number of compact carsClick on the correct answer.170 regular, 260 compactX 180x + y s 400175 regular, 225 compact300 210 regular, 190 compact200 10001200100300XS 180x + y s 400 Indira measures the length, I centimetres, of her desk as 95.6 cm, correct to the nearest millimetre.Complete the statement about the value of I. 1. 1) Simplify the following expression: 5b - 5 - 12b - 7 PLZ HELP I GIVE BRAINLIEST For this question, consider that the letter "A" denotes the last 4 digits of your student number. That is, for example, if your student number is: 12345678, then A = 5678. Assume that the factors affecting the aggregate expenditures of the sample economy, which are desired consumption (C), taxes (T), government spending (G), investment (1) and net exports (NX) are given as follows: G = 400, C = A +0.6 YD, 1' = 300+ 0.05 Y. T = 100+ 0.2Y. NX- 200 - 0.18 (a) According to the above information, explain in your own words how the tax collection changes as income in the economy changes? (b) Write the expression for YD (disposable income). (c) Find the equation of the aggregate expenditure line. Draw it on a graph and show where the equilibrium income should be on the same graph. (d) State the equilibrium condition. Calculate the equilibrium real GDP level. (e) What is the value of expenditure multiplier in this economy? If the government expenditure increases by 100 (i.c. AG=100), what will be the change in the equilibrium income level in this economy? What will be the new equilibrium level of real GDP? (f) Suppose that the output gap is given as "-2000". Explain what is output gap. Given this information, what is the level of potential GDP? How much should government change its spending (i.e. AG=?) to close the output gap?Previous question A school needs to buy new notebook and desktop computers for its computer lab. The notebook computers cost $225 each, and the desktop computers cost $250 each. How many total computers would someone buy if they get 19 notebooks and 12 desktop computers? How many total computers would someone buy if they get n notebooks and d desktop computers? (n+d) What are the major differences between a distributionchannel for a business making tangible products anda firm producing hospitality and travel products HELP DUE IN 30 MINS! Leave answers as simplified fractions if necessary.z =?? What is the best estimate of the number corresponding to A?A12340 2.60 2.40 2.22.3 which of the following is the best sample for a professional polling organization to poll on the governor's race in texas? What is the slope intercept form if the top goes through 5y and 1.3 The balance sheet of Indian River Electronics Corporation as of December 31, 2020, included 1075% bonds having a face amount of $911 million. The bonds had been issued in 2013 and had a remaining disc Which do you think is the most important of Aristotle's artistic proofs? Explain your answer. Help me pleaseeeeee What you would have done differently if you were a member of congress or the president during the era of construction