The bottom of a pan is made of a 4-mm-thick aluminum layer. In order to increase the rate of heat transfer through the bottom of the pan, a design was proposed for the bottom that consists of a 3-mm-thick copper layer sandwiched between two 2-mm-thick aluminum layers. Assume a perfect contact between the layers. Will the new design conduct heat better

Answers

Answer 1

Answer:

Yes, the new product will not conduct heat better

Explanation:

The bottom of the former product is made up of a 4mm thick aluminum layer

The new design is made up of two 2mm thick aluminum layer with a 3mm thick copper layer sandwiched in between.

These two materials are great conductors of heat.

As for copper, if one end is heated , the other ends rapidly reaches the same temperature, Copper is known as the best conductor of heat, that is, allows quick heat transfer. This ability of copper makes it highly used in applications where quick heat transfer is important, like the saucepans where rapid heat transfer is required.

As for aluminum, it is also a great heat conductor and twice as good as copper.

But the heat conductivity of copper is greater than aluminum and this will allow  a faster heat transfer between the layers.


Related Questions

Draw a FBD of the beam with reactions at A & B. A is a pin, B is a roller. Try to guess intuitively which way the vertical components of A & B are pointing. Do not show the 6 kN forces in your FBD. Only show the couple moment, or pure moment

Answers

Answer:

kindly check the drawing of the  FBD of the beam with reactions at A & B. A is a pin, B is a roller in the attached picture.

Explanation:

Without further ado, let's dive straight into the solution to the question above. From the diagram of the FBD of the beam with reactions at A & B it can be shown that the reaction moment is anticlockwise while the moment is clockwise.

The system is at equilibrium and the it does not matter where you place the couple (pure) moment.

The distance from A to C can either be equal or not. If AY = 2.15 kN and M = 25.8. Then, the distance between A and B = 25.8/2.15 = 12m.

Rigid bar ABC is supported by three symmetrically-positioned vertical rods, which are initially unstrained. After load P is applied, the normal strain in rods (2) is 0.0010 mm/mm. Determine the normal strain in rod (1) if there is a gap of 1.0 mm in the connection between rod (1) and the rigid bar at B. Report the strain in mm/mm

Answers

Answer:

The answer is below

Explanation:

The lengths of the rods are not given.

Let us assume the length of rod 1 = 1500 mm and the length of rod 2 = 800 mm

Solution:

The normal strain is defined as the change in member length δ divided by the initial member length L. The normal strain (ε) is:

ε = δ / L

δ = εL

For rod 1:

[tex]\delta_2=\epsilon_2 L_2\\\\\delta_2=0.0010\ mm/mm*1500\ mm=1.5\ mm[/tex]

The axial elongation of rod 2 is 1.5 mm. Since rigid bar ABC is attached to rod 2, the rigid bar move down by same amount.

The rigid bar moves down 1.8 mm but rods 1 will not be stretched by this amount. Because there is a gap between rod (1) and the rigid bar at B, the first deflection of 1 mm would not cause an elongation in rod 1. Therefore, the elongation in rods (1) is:

[tex]\delta_1=1.5\ mm-1\ mm=0.5\ mm[/tex]

The normal strain in rod 1 is:

[tex]\epsilon_1=\frac{\delta_1}{L_1} =\frac{0.5\ mm}{800\ mm} \\\\\epsilon_1=0.000625\ mm/mm[/tex]

Calculate the percentage of recyclables in high socioeconomic localities.

Answers

Answer:

The percentage of recycling in high socioeconomic localities is 11.02%.

Explanation:

Since in high socioeconomic localities, 10% of paper is recycled, 12% of plastic, 1.7% of fabrics, 1.2% of rubbers, 0.9% of metals, 3.5% of glass, 33% of food wastes, 35% soil and 1.9% miscellaneous, to determine the average recycling percentage the following calculation must be performed:

(10 + 12 + 1.7 + 1.2 + 0.9 + 3.5 + 33 + 35 + 1.9) / 9 = X

99.2 / 9 = X

11.02 = X

Therefore, the percentage of recycling in high socioeconomic localities is 11.02%.

What is "Engineering"?

Answers

Engineering is when both the application of science and math are used to solve problems. An engineer is a person who designs, builds, or maintains engines, machines, or public works. There are six large branches of engineering such as Mechanical, Chemical, Civil, Electrical, Management, and Geotechnical, they all have hundreds of subcategories of engineering under each different branch.

Consider one-dimensional heat conduction through a large plane wall with no heat generation that is perfectly insulated on one side and is subjected to convection and radiation on the other side. It is claimed that under steady conditions, the temperature in a plane wall must be uniform (the same everywhere). Is this claim reasonable

Answers

Answer:

YES, this claim reasonable

Explanation:

the temperature in a plane wall is uniform since no heat is penetrating into the large plane wall and therefore, there is no heat transfer from the wall under steady conditions,  

This condition will be met only when there are no temperature differences within the wall and the the outer surface temperature of the wall is equal to the temperature of its surrounding.

Therefore, Yes, this claim is reasonable

Time management is a learned behavior.
True
False

Answers

Answer:

true

Explanation:

The answer is True.

Considering how likely the risk is to affect the company’s profits is part of which component of risk management?
Risk identification
Risk assessment
Risk control
Risk mitigation

Answers

risk identification is the answer

Bob would like to run his house off the grid, therefore he needs to find out how many solar panels and batteries he needs to buy.

The power output of a 250 W solar panel is p=250−10(t−5)2 watts for the average 10 hour day. He plans on using 12 V, 120 A⋅h batteries and would like to able to store 3 days worth of energy. Bob's house uses 1100 kW⋅h per month (30 days).

Answers

Answer:

stink

Explanation:

what is a car that self driving

Answers

Answer:

It is when a person don't have to drive, the car can move by itself. (That's what I think it is) Hopes it help :)

Explanation:

2 Describe the four major disciplines of engineering and identify problems or projects that an engineer in each discipline might encounter. Chemical engineering Civil engineering . Electrical engineering Mechanical engineering

Answers

Answer: Starting of with Chemical Engineering something that they may encounter is a lack of adeptness man puissance. People that are working there are not much adept or having cognizance regarding to chemical industry. Something someone with a Civil engineering might encounter is the quandary of sustainable construction, and amendment construction site safety. To go on , something that Electrical engineering might encounter is a Non technical , Virtually an electrical engineer has to deal with an astronomical range of machines , control panels,instruments. For example you are working with circuit breakers,as anon as you’ll have expertise on any particular type of circuit breaker, there's a transmutation in trend and the CB you are working with is already obsolete. And last but no least , Something someone might encounter while doing Mechanical engineering is there toxic substances because their work environment is susceptible to fires, explosions, structural failures and equipment malfunctions.

Answer:

 Chemical engineering

Uses chemical processes to find new ways to produce goods. Making antibiotics, pesticides, safe clothes, and foods.

·         Civil engineering

Builds structures to try and make them efficient. Makes a tornado-proof house, explosion-proof bunker, or easily navigable subway system.

·         Electrical engineering

Develops the electrical components for things. Game systems, keyboards, projectors, or hard drives.  

·         Mechanical engineering

Mechanical engineers work with things with mechanical processes and moving parts. Drills, wheels, elevators, or cranes.  

·        

·    

·      

Rigid bar ACB is supported by an elastic cir-cular strut DC having an outer diameter of 15 in. and inner diameter of 14.4 in. The strut is made of steel with a modulus elasticity of load P 5kips5 E 5 29,000 ksi. Point is applied at B. Calculate the change in length of the circular strut DC. What is the vertical displacement of the rigid bar at point B

Answers

Answer:

The change in length of the circular strut DC = 0.0028 in.

The vertical displacement of the rigid bar at point B = 0.00378 in.

Explanation:

We have the following parameters or information in the question given above:

=> The outer diameter = 15 in., the inner diameter = 14.4 in., the modulus elasticity of E = 29,000 ksi, and the Point load P = 5kips.

The diagram showing the rigid bar ACB is supported by an elastic cir-cular strut DC  is given in  the attached picture below.

According to Newton's law of motion, it can be seen that the force on CD, that is FCD is equal and opposite to ACD. Hence, FCD = ACD.

Where FCD = p × [4 + 5] ÷ [sin Ф × 4].

kindly note that from the diagram sin Ф = 3/5, cos Ф = 4/5 and tan Ф = 3/4. Also p =5.

Hence, FCD =[ 5 × 9] ÷ [3/5 × 4] = 18.75 kip. So FCD = ACD.

The next thing here is to determine the area and length of CD, say the area of CD is G, thus, G = π/4 × [ 15² - 14.4²] = 13.854 in².

The lenght of CD is = √[4² + 3²] = √[16 + 9] = 5ft. Thus, 5 × 12 = 60in.

Hence, the change in length of the circular strut DC = [18.75 × 60] ÷ 13.854 × 29000 = 0.0028 in.

The vertical deflection of CD = 0.0028 × 3/5 = 0.00168 in.

We have that; 4 /CV = 9BV. Hence, BV = 9/4× CV.

(CV = vertical deflection of CD).

The vertical displacement of the rigid bar at point B = 9/ 4 × 0.00168 in = 0.00378 in.  

A three-phase transformer connection has a delta-connected secondary, and one of the transformers has been center-tapped to form a neutral conductor. The phase-to-neutral value of the center-tapped secondary winding is 120V. If the high leg is connected to a single-phase load, how much voltage will be applied to that load

Answers

Answer:

207.84 V will be applied to that load.

Explanation:

Given that;

The phase-to-neutral value of the center-tapped secondary winding is 120V

the high leg is connected to a single-phase load

voltage that will be applied to that load = ?

Now, the the high leg voltage will be 1.732 times the single phase center tapped voltage .

so

Load Voltage = 1.732 × 120V

Load Voltage = 207.84 V

Therefore, 207.84 V will be applied to that load.

A brake caliper is considered a suspension item.
True
False

Answers

True


Suspension is the system of tires, tire air, springs, shock absorbers and linkages that connects a vehicle to its wheels and allows relative motion between the two.[1] Suspension systems must support both road holding/handling and ride quality

Were you surprised by the “pie data”? Is it true for you, your family, and your friends? Why or why not?

this is a coding question, and pie data is a misprint. It is actulaly big data.

Answers

Answer:

No because it is something to gain knowledge of peoples lives.

Answer: i was not suprised because, it is something all people need to know to gai  knowledege about it.

Assume that 50,000 yd3 of the soil from a local borrow pit in Rhode Island, with a water content of 13% and dry unit weight of 87 pcf, is to be delivered to a construction site for some repairs of highway in I-95. By the time it reaches the site, the water content is 9%. It will be compacted to a minimum of 90% of the modified Proctor maximum dry density. Determine the total amount of water (in pounds), that must be added to the soil to increase the moisture content to the optimum level. Assume a Gs

Answers

Answer:3000 yd3

Explanation:

so i got the 50000 divided it by 100 times that by 13 and got 4500 yd3

so now the soil is at 9 so i need to get the 4 percent back up so i yet again got 50000 yd3 and divided by 100 and times it by 9 to get 1500 yd3 to then minus my 1500 and 4500 yd3 and got 3000 yd3 i hope it is right.

(25%) A well-insulated compressor operating at steady state takes in air at 70 oF and 15 psi, with a volumetric flow rate of 500 ft3 /min, and compresses it to 60 psi. The power input to the compressor is 80 horsepower. Kinetic and potential energy changes from the inlet to exit can be neglected. Determine the exit temperature, in oR.

Answers

Answer:

You can look it up

Explanation: if you don't know what it is look it up on .

The answer is all income (&) expenses

Answers

Answer:

NICE

Explanation:

what is an unit resistance

Answers

Answer: Ohm Ω

Explanation:

The resistance can be defined as the hindrance offered to the flow of current. Lower the current the higher is the resistance. The SI unit of resistance is ohm Ω. When one ampere current flows from an object or wire the application of one volt of potential difference on it the resistance so produce is one ohm. Resistance can be achieved by the application of the certain gadgets in the circuit which can prevent the flow of excess current from devices and can prevent shock circuit.

Who developed the process of blueprinting?
A.
Michelangelo Buonerotti
B.
Raphael Sanzio
C.
Sir John Herschel
D.
Vitruvius

Answers

Answer: C.) John Herschel

what are material engineers trying to discover when they study different materials

Answers

Answer:

The Material engineers trying to discover when they study different materials is described below in complete detail.

Explanation:

Material engineers analyze various elements to discover the purpose and explanation of its existence, the chemical characteristics, how long it has stood there, and how it influences human life. The material engineer is an engineering exercise that concentrates to enhance human activity by investigating the environment and the diverse elements or elements it holds.

what car has autopilot?

Answers

tesla lol how did you not know that?

Answer:

Tesla is a car that is able to drive automatically.

Convenience items like liquid egg are a lot more expensive?
True
Or False

Answers

It’s true because convenience stores are more expensive so that means overall the items would be more expensive.

Answer:

True

Explanation:

It's just because of the processing

PLEASE HELP THIS IS A TEST I WAS SUPPOSE TO DO 8 HOURS AGO.

An object has a width of 1.0 in. if you were to create a 1:4 scaled drawing of this object, what would the dimensions of the drawing be?​

Answers

The only dimension you gave me is the width so I will work with that. If it’s asking for a smaller drawing than what is giving then the width will be 1/4 inch but if you’re saying the drawing is bigger then the width will be 4 inches

Please answer ASAP!!
Which statement correctly describes why the electric pole has bent?

A.) Tensile stress acting on the pole caused it to bend.

В.) Compressive stress acting on the pole caused it to bend

С.) The force acting on the pole exceeded its yield strength.

D.) The force acting on the pole exceeded its compressive strength.

Answers

Answer:

С.) The force acting on the pole exceeded its yield strength.

Explanation:

Answer:

The correct answer is C. The force acting on the pole exceeded its yield strength.

Explanation:

I got it right on the Plato test.

Consider a single crystal of some hypothetical metal that has an FCC crystal structure and is oriented such that a tensile stress is applied along a[102] direction. If slip occurs on a( 111) plane and in a [ 101] direction, compute the stress at which the crystal yields if its critical resolved shear stress is 12.76 MPa.
a. 13.96 MPa
b. 52.1 MPa
c. 0 MPa
d. 30.9 MPa
e. 3.1 MPa

Answers

I believe it’s B but I could be wrong

What is a kind of useful car?

Answers

Yes what he/she said a truck is a very useful car if you want to go to work with it many use it for that, it can vary many things:)
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Which act showed that Koblai Khan intended to make his mark as an emperor of China?He extended the borders of his empire eastward into Japan and Korea.He insisted that trade be open between the Eurasian steppe and China.He allowed the Chinese to keep their religion and culture.He moved the capital to the site of modern day Beijing (built a palace with a wall). -190*(x)483-913+342-4569-(y)94= Which letter identifies Sparta?ABCD 45% of the students at Mannion Middle School walk to school. If 234 students walk to school, how many students are at Mannion Middle School? if f (x) = -x - 7 what is f (-3)Plz help In the expression 85x - 99 what represents the coefficient? A cake recipe requires flour and sugar in a ratio of 4 to 3. Which table has been generated using this ratio? What is the name of the process happening in the picture? How do you know its that process? Explain your answer in 2 to 3 sentences complete help please How did ancient camels differ from those of today The clock ticked noisily as the students shuffled their exam papers andwaited for the bell to ring.If you had to determine a story's point of view from this sentence alone,which would you choose?A. Third-person omniscientB. Third-person objectiveC. First personO D. Third-person limited Mark collected 110 seashells from the beach. Courtney collected 124 seashells from the beach. How many total seashells did Mark and Courtney collect? A ladder is propped against the side of a building making a 30 degreeangle with the buildingIf the base of the ladder is 6 feet from the base of the building, howhigh will the ladder be resting against the building, in feet? Roundyour answer to the nearest whole number To go to the state park. Mary's family had to pay $3 for the car. plus $2 for each person in the car. Write an expression that could be used to find the cost for any number of people. Let x represent the number of people in the car. Herbert Spencer was which of thefollowing?A. an English scientistB. an English governorC. an English anarchist Hello, I need help on this question. I dont understand it and have been getting the answer incorrect. I am embarrassed to ask my teacher for help so please help Suppose we are writing a calculation to the right of 72,000 3,000 Which expression has a quotient of 24? Be prepared to explain your reasoning.A - 72,000 30,000B - 720,000 300,000C - 720,000 30,000D - 720,000 3,000 A store sells graph paper in packages of 100 sheets. During a sale, they offer a package that has 25% more sheets for no additional cost. How many sheets are in the sale package? inventa una novela gtica sobre un tema de tu predileccin porfa ayuda :c Read the short story. Noah spent three weeks working on his model of the Golden Gate Bridge. He designed it himself and built it completely out of toothpicks for the sixth-grade science fair. The purpose of Noah's project is to demonstrate how proper design is the key to the strength of a structure. Which conclusion would readers find most satisfying? An interested student decides to see how much weight Noah's bridge will hold. She places a pile of books on it, and it smashes to pieces. Noah wins a blue ribbon and gets his picture in the local newspaper. The headline reads, "Student's Model Holds Up to 'Pressure' of the Judges." Because he could not get away from the office, Noah's father is unable to deliver Noah's model to the school in time for judging. Noah's entry is marked as "Not Judged." Although the judges seem impressed with Noah's model, it does not earn a ribbon. Noah becomes very upset and regrets putting so much work into the science fair. I don't have time pls help pls pls pls plsEvaluate the expression for x = 9.7x =