The statement that is correct about the relation between the velocity boundary layer and heat transfer for flow over a flat plate that is uniform in temperature is

Answers

Answer 1

Answer: the heat flux increases as the velocity boundary layer transitions to laminar to turbulent.

Explanation:

The correct statement about the relation between the velocity boundary layer and heat transfer for flow over a flat plate that is uniform in temperature is that the heat flux increases as the velocity boundary layer transitions to laminar to turbulent.

It should be noted that the heat goes in a streamline direction in a laminar flow, thereby the molecules less collide with each other. On the other hand, the direction is zig zag in a turbulent heat flux and this will bring about more collision of the molecules which leads to a rise in the heat flux.


Related Questions

The pyramids in Egypt are cited as an ancient world wonder. What is the main
reason that the pyramids are important to the study of engineering?

Answers

The pyramids are important to the study of engineering because they were some of the first structures built using engineering principles. The pyramids are an example of how engineering can be used to create amazing structures.

What is pyramid?

A pyramid is a structure with triangular exterior surfaces that converge to a single step at the summit, giving the shape the shape of a pyramid in the geometric sense. A pyramid's base can be trilateral, quadrilateral, or any polygon shape. A pyramid, as a result, has at least three exterior triangle surfaces. A typical variant is the square pyramid, which has a square base and four triangular exterior surfaces. The design of a pyramid, with the majority of the weight closer to the bottom and the pyramidion at the apex, means that less material will be pushed down from above. This weight distribution enabled early civilizations to build stable massive constructions.

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] A Maxwell's capacitance bridge shown in Fig.4 is used to measure an unknown inductance in comparison with capacitance. The various values at balance: R2=400Ω; R3=600Ω; R4=1000Ω; C4=0.5μF. Calculate values of R1 and L1. Calculate also the value of storage (Q) factor of coil if frequency is 1000Hz.

Answers

The value of the quality factor of the coil is given as 14.01/Rcoil.

Given parameters for Maxwell's capacitance bridge are as follows:R2=400Ω; R3=600Ω; R4=1000Ω; C4=0.5μF.The formula for calculating R1 and L1 in the given Maxwell's capacitance bridge is, R1 = (R2R3)/R4L1 = 1/(4π²C4R3²)The value of R1 is calculated as follows;R1 = (R2R3)/R4 = (400 x 600)/1000 = 240 Ω.

The value of L1 is calculated as follows;L1 = 1/(4π²C4R3²) = 1/(4π² x 0.5 x 10^-6 x 600²) = 2.213 mHNow, let's calculate the quality factor, Q factor of coil. The formula to calculate the quality factor is given as,Q = 2πfL/RHere, f is the frequency of the signal, L is the inductance and R is the equivalent series resistance (ESR) of the coil.

The value of frequency is given as 1000Hz. We have calculated the value of L1 as 2.213 mH.The equivalent series resistance (ESR) of the coil is the resistance of the coil when it is measured by a device that passes an AC current through it. Let's say that the equivalent series resistance of the coil is Rcoil.

Hence,Q = 2πfL1/RcoilQ = 2π x 1000 x 2.213 x 10^-3/RcoilQ = 14.01/Rcoil.

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a. Draw the circuit of an 8-bit Digital to Anlog (DAC) convetr. (5-points) b. Find its resolution if the refrence volatge Vref is 8V. (3-points) c. Find the output if the input is (11000011)2-(3-points)

Answers

The output of the DAC when the input is (11000011)2 is 6.1451V.

a. Circuit diagram of an 8-bit Digital to Analog Converter (DAC): The circuit diagram of an 8-bit Digital to Analog Converter (DAC) is as follows:

b. Resolution of an 8-bit DAC with a reference voltage of 8V: The resolution of a DAC is given by the formula, Resolution = Vref / (2^n-1) where n is the number of bits in the DAC, and Vref is the reference voltage.

So, the resolution of an 8-bit DAC with a reference voltage of 8V is, Resolution = 8 / (2^8-1)= 8 / 255= 0.0314 V (rounded to 4 decimal places)

c. Output if input is (11000011)2: To find the output of the DAC, we need to convert the binary input into its corresponding analog voltage.

The input given is (11000011)2, which is an 8-bit binary number. To convert it to an analog voltage, we use the following formula, Analog Voltage = (Digital Value / (2^n-1)) x Vrefwhere n is the number of bits in the DAC, and Vref is the reference voltage.

Substituting the given values, we get, Analog Voltage = ((11000011)2 / (2^8-1)) x 8= (195 / 255) x 8= 6.1451 V (rounded to 4 decimal places)

Therefore, the output of the DAC when the input is (11000011)2 is 6.1451V.

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The vertical force F acts downward at A on the twomembered frame. Determine the magnitudes of the two components of F directed along the axes of AB and AC. Set F = 500 N. Solve problem 4 with F = 350 lb.

Answers

Vector addition parallelogram law :If a force F needs to be broken down into its component parts along the axes b and c, one should start at the head of the force and build lines parallel to the axes until a parallelogram is formed.

Solve the  problem ?

Vector addition parallelogram law :If a force F needs to be broken down into its component parts along the axes b and c, one should start at the head of the force and build lines parallel to the axes until a parallelogram is formed.

The parallelogram's sides are represented by Fb and Fc.

Finding the force component F AB and F AC applied at diagram point A is our task.

We can employ the law of sines, as shown in the diagram.

The query is unfinished.

The entire question is included as an image in the attachment, and an explanation is given below.

F AB / sin 60  = 500/ sin 75

F AB = 500/0.965*0.866

F AB =  448.7 N

To find F AC

F AC /sin 45 =500 /sin 75

F AC = 500/0.965* 0.7071

F AC = 366.3 N

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What
IS
a
3-phase system.

Answers

Answer:

Explanation: Three-phase power is a three-wire ac power circuit with each phase ac signal 120 electrical degrees apart

Why weren’t car produced during world war 2

Answers

Answer:

Auto production stopped on Feb. 9, 1942, as factories switched over to making munitions for World War II. The industry retooled plants that could be adapted.

Answer:

9, 1942, as factories switched over to making munitions for World War II. The industry retooled plants that could be adapted. Car manufacturing equipment was replaced with what was needed to make planes and tanks, and floors were reinforced to carry the load of heavier machinery, according to Life magazine

Explanation:

How to write an essay of informative speaking

Answers

Answer:

Do not use I me my we. Less exclamation points, bigger words like "Pompous" Lots of uptight language, as if you are at an interview. structure should be precise and sharp, sharper than Angelina Jolie's cheekbones

Explanation:

The change in resistance of an electrical resistance strain gauge with a gauge factor of 2.0 and a resistance of 100 when subject to a strain of 0.001 is: O 2.00 O 0.20 O 0.050 O 0.1

Answers

The change in resistance of an electrical resistance strain gauge with a gauge factor of 2.0 and a resistance of 100 when subject to a strain of 0.001 is 0.20. Option B is the answer.

The resistance of an electrical conductor is affected by the external factors such as temperature, pressure, or mechanical stress. Electrical resistance strain gauge is an instrument that is utilized to measure the small changes in resistance of a conductor subjected to the external force or strain.

To calculate the change in resistance of an electrical resistance strain gauge with a gauge factor of 2.0 and a resistance of 100 when subject to a strain of 0.001, we will use the following formula:

ΔR = R( GF × ε)

Where:

ΔR = Change in resistance

R = Resistance

GF = Gauge factor

ε = Strain of the conductor

Given,GF = 2.0R = 100ε = 0.001

By substituting these values in the above formula, we get:

ΔR = R( GF × ε)ΔR = 100 (2.0 x 0.001)ΔR = 0.2Ohm

Hence, the change in resistance of an electrical resistance strain gauge with a gauge factor of 2.0 and a resistance of 100 when subject to a strain of 0.001 is 0.20 (option B).

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A paper mill processes rolls of paper having a density of 984 kg/m3. the paper roll is 1.50-m outside dia. (od) x 0.22-m inside diameter (id) x 3.23-m long and is on a simply supported, hollow, steel shaft with sy

Answers

The shaft has an OD of 22 cm and an interior diameter of 21.8 cm. Paper rolls with a density of 984 kg/m3 are processed in a paper mill. The paper roll measures 0.22 m interior diameter by 1.50 m outer diameter.

The bearing width, the outer diameter (OD), and the bore diameter (also known as inner diameter, or ID). While all three metrics are significant, the bore diameter is given particular attention because it is solely based on shaft size. One thing to keep in mind is that the shaft diameter and bore diameter aren't usually the same. The cylindrical part that emerges from a motor's housing and the motor itself is called a shaft. The shafts' function is to transform the energy coming from the motor.

The inner diameter of the shaft is

M/I = sigma/y

55430.344/(pi/64*(0.22^4- di^4) = (5*300*10^5)/0.22/2

di = 0.218m

di = 21.8cm

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The complete question is-

A paper mill processes rolls of paper having a density of 984 kg/m^3. The paper roll is 1.50-m outside diameter (OD) times 0.22 m inside diameter (ID) times 3.23-m long and is on a simply supported, hollow, steel shaft with S_y = 300 MPa. Find the shaft ID needed to obtain a static safety factor of 5 if the shaft OD is 22 cm.

give the compound suffix form meaning an instrument for examining.

Answers

The suffix comes from the Greek skopos, meaning "to look at" or "to examine." It is often used in medical and scientific terms, but it can also be found in everyday language.

The compound suffix form meaning an instrument for examining is -scope. A suffix is a group of letters that can be attached to the end of a word to change its meaning or create a new word. In the case of -scope, it means an instrument for examining.

The most common examples include: Microscope - an instrument for examining small objects such as cells, bacteria, and other microorganisms.Telescope - an instrument for examining objects that are far away, such as stars and planets.Stethoscope - an instrument used to listen to sounds inside the body, such as the heart or lungs.

Otoscope - an instrument used to examine the ear.Endoscope - an instrument used to examine internal organs or cavities of the body like the colon or stomach. This suffix comes from the Greek skopos, meaning "to look at" or "to examine." It is often used in medical and scientific terms, but it can also be found in everyday language.

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A second-degree burn may develop blisters

Answers

Answer:

A second degree burn would have reddened, swollen skin, with blisters. So yes, your statement would be true.

On a 'wear indicator type ball Joint, what does it mean when the grease fitting boss is flush with the base?

OA. The ball Joint requires lubrication

OB. The ball joint should be replaced

OC. The steering knuckle has loosened from the ball Joint

OD. Nothing, this is how they are when new

Answers

For a wear indicator type ball joint, when the grease fitting boss is flush with the base: B. The ball joint should be replaced.

What is a wear indicator?

A wear indicator can be defined as a type of technology that is designed to alert and warn a car owner or driver that the car's brake pad is needs a replacement.

Generally, a wear indicator is designed and fitted with a small boss. Thus, this small boss would continuously recede into its housing as wear occurs. However, when it recedes into the cover plate or flush with the base, it simply means that the ball joint should be replaced.

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Footing size 3'-6" ×3 ′−6 ′′×2 ′ −0 ′′, has reinforcement 5-#4 E.W., T\&B, total length LF is: 26, 36ft, 70ft ,18ft. Most common frame in residential building is: Wood light framing, Heavy timber, Precast prestressed, funcrete fug ,Structural steel Framing type. which best used in high rises and bridges is: Cast-In-Place Reinforced Concrete, Structural Steel ,Wood Light Framing ,Heavy Timber

Answers

The most common frame in residential buildings is wood light framing. Cast-in-place reinforced concrete is commonly used in high rises and bridges.

Wood light framing is the most common frame used in residential buildings due to its cost-effectiveness, versatility, and ease of construction. It involves using wooden members, such as studs, joists, and beams, to create a structural framework for the building. This type of framing is lightweight yet sturdy, making it suitable for low to mid-rise residential structures. Wood light framing provides flexibility in design and allows for efficient insulation and soundproofing.

Wood light framing offers numerous advantages in residential construction, including its renewable and sustainable nature. Wood is a readily available and renewable resource, making it an environmentally friendly choice. Additionally, wood light framing allows for faster construction compared to other framing methods, reducing overall project timelines and costs. It is also a popular choice for its aesthetic appeal and the warmth it adds to residential interiors.

Cast-in-place reinforced concrete, on the other hand, is commonly used in high rises and bridges due to its exceptional strength and durability. This construction method involves pouring concrete into formwork on-site and reinforcing it with steel bars or mesh. The combination of concrete's compressive strength and steel's tensile strength results in a robust and resilient structural system.

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it is not recommended that idler pulleys be used to add tension because _________.

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It is not recommended that idler pulleys be used to add tension because it can result in reduced belt life, increased power consumption, and reduced efficiency.

An idler pulley is a small wheel that guides a belt. Tension can be added to the belt by increasing the force applied to the idler pulley. However, it is not recommended to use idler pulleys for this purpose because of the following reasons:

1. Reduced belt life: If the idler pulley is used to add tension, it can cause excessive wear and tear on the belt. This can result in a shorter lifespan for the belt.

2. Increased power consumption: If the idler pulley is used to add tension, it can increase the power consumption of the machine. This is because the added tension requires more power to operate the belt.

3. Reduced efficiency: If the idler pulley is used to add tension, it can reduce the efficiency of the machine. This is because the added tension requires more energy to operate the belt, which can lead to reduced overall efficiency.

It is not recommended that idler pulleys be used to add tension because it can result in reduced belt life, increased power consumption, and reduced efficiency. Idler pulleys are a common component of many machines and are used to guide belts. Tension can be added to the belt by increasing the force applied to the idler pulley.

However, this is not recommended because it can cause several problems that can impact the overall performance of the machine.One of the main problems with using an idler pulley to add tension is that it can result in reduced belt life. This is because the added tension can cause excessive wear and tear on the belt, which can lead to a shorter lifespan for the belt.

In addition, the added tension can increase the power consumption of the machine. This is because the added tension requires more power to operate the belt, which can lead to increased power consumption and higher energy costs. Furthermore, the added tension can also reduce the efficiency of the machine. This is because the added tension requires more energy to operate the belt, which can lead to reduced overall efficiency.

It is not recommended to use idler pulleys to add tension because of the negative impact it can have on the overall performance of the machine. It can result in reduced belt life, increased power consumption, and reduced efficiency. Therefore, it is best to use other methods to add tension to the belt.

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Training for the use of ladders is required:

A. Always; prior to use.

B. When appropriate.

C. Never, the use of ladders is obvious

D. None of the above

Answers

A. Always; prior to use. Training for the use of ladders is required always prior to use because it ensures that individuals understand proper ladder safety, inspection, and handling procedures, preventing accidents and injuries in the workplace.

Training for the use of ladders is crucial for the safety of the user and those around them. Using a ladder incorrectly can lead to serious injuries or even fatalities. Therefore, it is important to have a thorough understanding of ladder safety, including proper set-up, usage, and maintenance. Ladder training should be provided to all individuals who may need to use a ladder, whether it be at work or at home. Additionally, regular refreshers and updates on ladder safety should also be provided to ensure that individuals are up-to-date with the latest best practices.

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QUESTION 9 Which of the followings is true? For wideband FM, O A. Bessel function is always required. B. the complex envelope would need to be formulated. O C. the message should be sinusoidal. O D. the modulation index may be undefined.

Answers

For wideband FM, the complex envelope would need to be formulated. In wideband frequency modulation (FM).

To fully understand and analyze the FM signal, it is necessary to formulate the concept of a complex envelope. The complex envelope represents the underlying complex waveform that contains both the amplitude and phase information of the modulated signal. It is obtained by separating the carrier and modulating components from the FM signal The complex envelope formulation is particularly important in wideband FM because it allows for a simplified representation and analysis of the signal. By decomposing the FM signal into its complex envelope, various signal processing techniques, such as demodulation and modulation schemes, can be applied. Therefore, in wideband FM, the complex envelope needs to be formulated to accurately represent and analyze the FM signal. It provides a mathematical framework for understanding the signal's characteristics, allowing for efficient signal processing and communication system design.

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Ew Wakefield Hospital has only one portable X-ray machine. The emergency room staff claim to have the greatest need for the machine, but the surgeons in the operating room demand ready access to the machine. The conflict between these two groups is a result of Group of answer choices

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Ew Wakefield Hospital has only one portable X-ray machine. The emergency room staff claim to have the greatest need for the machine, but the surgeons in the operating room demand ready access to the machine. The conflict between these two groups is a result of scarcity.

Science and technology are the driving forces behind today's modern medicine, allowing us to identify and treat a range of medical problems. X-ray technology has had a significant impact on medicine, and it is commonly used to diagnose various diseases, making it an essential tool for hospitals.

Despite the advantages, the scarcity of portable X-ray machines creates difficulties for hospital employees, including a dispute between the emergency room and the operating room staff at Ew Wakefield Hospital. There is only one portable X-ray machine available at Ew Wakefield Hospital.

The conflict between the emergency room and the operating room staff is a result of scarcity. Both departments require ready access to the X-ray machine. Scarcity can generate rivalry, competition, and conflict when people and organizations compete for the same resource.

The staff's conflict is a direct result of the lack of accessibility to the X-ray machine. Thus, scarcity can be a significant factor contributing to interpersonal conflict.

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Write a reflection on how you can use your knowledge of thermodynamics during this pandemic period of the Coronavirus to
help yourself, your family, the environment, and society

consider or reconsider your energy usage, needs, and conservation

Answers

Answer:

Plzzzz answer fast......

Which workplaces are common to both the Engineering and Technology pathway and the Science and Math pathway?


a) laboratories and ships
b) parks and radio stations
c) construction sites and zoos
d) offices and weather stations

Answers

Laboratories and ships are workplaces common to both the Engineering and Technology pathway and the Science and Math pathway.

The common workplace for both science and math pathways, with engineering and technology in laboratories and ships. Thus, option A is correct.

What is a workplace?

A workplace is given as the location or the place at which the employee are performing their jobs and tasks.

The science or technology-mediated employees are related to research where they perform the tests in laboratories, as well as the ships are the location for the engineering and the math candidates for the analysis of the studies and to perform the job.

Hence, the location in the workplace common for both engineering and technology candidates has been the laboratories and the ships. Thus, option A is correct.

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unitate de masura in SI pt F​

Answers

Answer:

Electrical Capacitance

Explanation:

To find - unit of measure in SI for F

Solution -

The answer is - Electrical Capacitance

Reason -

The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge.

Răspuns:

Capacitate electrică

Explicaţie:

Pentru a găsi - unitate de măsură în SI pentru F

Soluție -

Răspunsul este - Capacitate electrică

Motiv -

Farada (simbolul: F) este unitatea de capacitate electrică derivată din SI, capacitatea unui corp de a stoca o sarcină electrică.

For welding the most important reason to use jigs and fixtures in a welding shop is to

Answers

Answer:

Reduce manufacturing costs.

Explanation:

Hope This Helps

Have A Great Day

... is an actual sequence of interactions (i.e., an instance) describing one specific situation; a ... is a general sequence of interactions (i.e., a class) describing all possible ... associated with a situation. ... are used as examples and for clarifying details with the client. ... are used as complete descriptions to specify a user task or a set of related system features.

Answers

Answer:

ScenarioUse caseScenariosScenariosUse case

Explanation:

A scenario is an actual sequence of interactions (i.e., an instance) describing one specific situation; a use case is a general sequence of interactions (i.e., a class) describing all possible scenarios associated with a situation. Scenarios are used as examples and for clarifying details with the client. Use cases are used as complete descriptions to specify a user task or a set of related system features.

The cutting plane line indicates where the section is located with relation to the
view.

Answers

Diagonal lines drawn that are placed on section view to indicate the areas of thr object that came on contact with the cutting plane.

arrange the tasks in the correct sequence, based on the proper usage and maintenance of knives. store the clean knife in the knife block. clean the knife after use. select the proper knife for the job. purchase the required knives.

Answers

The correct sequence for proper usage and maintenance of knives is as follows:

1. Purchase the required knives. 2. Select the proper knife for the job. 3. Clean the knife after use. 4. Store the clean knife in the knife block.

Purchasing the required knives is the first step in the proper usage and maintenance of knives. It is important to select the right knives for the job, as different knives are designed for different tasks. After use, it is important to clean the knife to prevent the spread of bacteria and to keep the knife in good condition. Finally, the clean knife should be stored in a knife block to protect it from damage and to keep it organized.

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What is the purpose of specifications?

Answers

Answer:

The purpose of specifications is to provide a clear and detailed description of the requirements, parameters, and standards that a product or service must meet in order to be considered satisfactory and fit for its intended purpose. They serve as a guideline for the design, development, and production of a product or service, and ensure that all stakeholders have a clear understanding of the expectations and requirements for the final outcome. Additionally, specifications can also be used as a means of measuring and evaluating the performance and quality of a product or service, and can aid in the identification of potential issues or areas for improvement. Overall, specifications play a crucial role in ensuring that a product or service meets the needs and expectations of its intended users and stakeholders.

Let the function fun be defined as int fun(int *k) { *k += 4; return 3 * (*k) - 1; } Suppose fun is used in a program as follows: void main() { int i = 10, j = 10, sum1, sum2; sum1 = (i / 2) + fun(&i); sum2 = fun(&j) + (j / 2); } What are the values of sum1 and sum2 ? ( a. if the operands in the expressions are evaluated left to right? b. if the operands in the expressions are evaluated right to left?

Answers

The values of sum1 and sum2 if the operands in the expressions are evaluated left to right are; sum1 = 46 and sum2 = 48

How to use Operand in Programming?

In computer programming, the term operand is defined as the object of a mathematical operation or it is the object or quantity that is operated on.

A) If the operands in the expressions are evaluated left to right, then the values of sum1 and sum2 are;

sum1 = (10/2) + 41 = 46

sum2 = 41 + (14/2) = 48

B) If the operands in the expressions are evaluated right to left, then the values of sum1 and sum2 are;

sum1 = (14/2) + 41 = 48

sum2 = 41 + (10/2) = 46

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which of the following is a function of a safety device

Answers

Answer:

what are the options available?

Can you list the comments in the comment section so I can answer your question?

navigate to the project directory: (type this into your cmd window, you're aiming to navigate the cmd window to the repository you just downloaded)

Answers

To navigate to the project directory in the cmd window, you can use the "cd" command followed by the path to the repository you just downloaded.

For example, if the repository is located on your desktop, you can type "cd C:\Users\YourUserName\Desktop\RepositoryName" and press enter. This will change the current directory in the cmd window to the project directory.

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Consider a sphere with diameter of 10 mm, rho=3000 kg/m3 , k=20 w/mo C, C=1 kJ/Kg- o C and α=6.66*10-6 m2 /s, which is initially at 400o C. Then it is quenched in an air stream of 20 o C. Convection heat transfer coefficient, between air and the surface of the sphere, is h=10 W/m2 - o C. • Calculate the time required for the center of the sphere to reach 335 o C? • Now the sphere is moved to a large bath of water at 20 o C. The heat transfer coefficient between water and the surface of sphere is assumed to be 6000 W/m2 - o C. Estimate the time required for the center of the sphere to reach 50o C?

Answers

To calculate the time required for the center of the sphere to reach 335 o C, we need to use the following formula:

()=∞+(0−∞)−ℎ/

where T(t) is the temperature at time t, T0 is the initial temperature, T∞ is the temperature of the surrounding fluid, h is the convective heat transfer coefficient, A is the surface area of the sphere, m is the mass of the sphere, c is the specific heat of the sphere material, and t is time.

Using the given values, we can calculate the time required for the center of the sphere to reach 335 o C:

A = πd^2/4 = 7.85x10^-5 m^2

m = ρV = (4/3)π(d/2)^3ρ = 1.178 kg

t = (1/α) ln[(T0 - T∞)/(T(t) - T∞)] = 79.26 seconds

To estimate the time required for the center of the sphere to reach 50 o C in the water bath, we use the same formula, but with a different value of h:

h = 6000 W/m^2-°C

T∞ = 20 °C

T0 = 335 °C

m = 1.178 kg

c = 1000 J/kg-°C (since C = 1 kJ/kg-°C)

T(t) = 50 °C

t = (1/α) ln[(T0 - T∞)/(T(t) - T∞)] = 242.18 seconds

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Amdahl’s LAW Question:
Suppose that we want to enhance the execution time used for web serving, two designs have been proposed, show which one is better
Design 1: Use a new processor 15 times faster than the original processor, assuming that the original processor is busy with computation 50% of the time and waiting for the I/O 50% of the time.
Design 2: Use a new Processor 20 time faster. While the processor is 30% of the time busy with the computation and 70% waiting for the IO

Answers

Answer:

Explanation:

As per Amdahl's law :

\(\text {Speedup} = {\frac{\text{Old Execution time}}{\text {New Execution time} }\)

\(\text {Speedup} = \frac{1}{( (1- \text {FractionEnhanced}) + (\text {FractionEnhanced} / \text {SpeedupEnhanced}) )}\)

Here :

Design 1:

FractionEnhanced = 0.5 (50% of computation )

[ Note that I/O wait has nothing to do with speed ]

 

SpeedupEnhanced = 15 times

\(\text {Overall speedup} =\frac{1}{( ( 1- 0.5) + (0.5/ 15) )}\)

\(\text {overall Speedup} = \frac{1}{(0.5 + 0.033)}\)

\(\text {overall Speedup} = \frac{1}{ 0.533} = 1.876\)

========

Design 2:

FractionEnhanced = 0.3 (30% of computation )

SpeedupEnhanced = 20 times

\(\text {overall speedup} = 1 / ( ( 1- 0.3) + (0.3/ 20) )\\\\\text {overall speedup} = 1/ (0.7 + 0.015)\\\\\text {overall speedup} = 1/ 0.715 \\\\\text {overall speedup}= 1.398\)

========

So as we can see Design 1 is better with overall speedup of 1.876 times the original processor.

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