3. An underground copper pipe is used to transport oil under a factory. It is very important that this pipe does not oxidize, so engineers use impressed current cathodic protection. a. Would zinc be an appropriate metal to use for cathodic protection? Why or why not? (4 points) b. Engineers attach a sacrificial anode to the copper pipe. To use impressed current cathodic protection, they must attach a battery between the cathode and anode. Which material should the positive side of the battery be attached to? Explain how you know. (4 points)

Answers

Answer 1

Answer:

a) Copper corrosion is prevented by an external current source that provides a condition around the copper that halts the rust through current cathodic protection

Due to the location of the pipeline, an material such as graphite, titanium, or niobium can be used which lasts longer that zinc can be used for longevity of the protection

b) The positive side of the output DC terminals are attached to the anodes such as graphite, while the negative terminals are connected to the copper pipe to be protected

Explanation:

Making the protected metal the cathode will make the metal be the source of electrons into the reaction taking place such that the release of the positive metal ions that results in disintegration takes place at the anode and as such the protected metal made the cathode, to which the negative terminal of the battery is attached is protected.


Related Questions

what kind of line is used to indicate the supporting beam

Answers

Answer:horizontal

Explanation: because it is supporting it

Built-up roofing, also called BUR, is the most common roofing material used on low-slope roofs. It is composed of alternating layers of reinforcing fabric and bitumen (asphalt) and is finished with a top layer of aggregate, such as stone or gravel.

What is kinetic energy?

Answers

Answer:

kinetic energy means energy which a body possesses by virtue of being in motion

Answer:

Kinetic Energy is a type of energy which a body possesses by virtue of being in motion.

OR

It's the energy of mass in motion.

Hope it helps!!Please mark me as the brainliest!!!

Thanks!!!!

Tech A says never disconnect sensors before conducting resistance checks. Tech B says automotive test lamps should not be used on digital circuits because they draw too much current and can overload the circuit. Who is correct?

Answers

Answer:

12345263636636363663636e6ee66e6e6e63777e

Prescription eye protection suitable for an electrician should always include a. a safety strap b. soft nose guards c. side shields d. tinted lenses

Answers

Answer:

The correct option is;

Side shields

Explanation:

Electricians working at a construction site are exposed to arc flashes and sparks which can enter into the eyes causing painful sensation as such a prescription eye protection suitable for an electrician according to OSHA regulations the employer should ensure that the electrician makes use of eye protection that has side protection in situations that include hazards from flying objects.

Explain orthographic
and multi-view
projection​

Answers

Answer:

Orthographic projection is a projection method to present three-dimensional shapes in two-dimensional format in which the projection lines are drawn to be orthogonal to the plane of projection, such that each view of the three-dimensional object is translated to a view of the orthographic projection and orthogonal to the view

A multiview projection is the representation of a three-dimensional projection by two or more two-dimensional views

Explanation:

how many types of engineering specialist are there?

Answers

There are now six major branches of engineering: Mechanical, Chemical, Civil, Electrical, Management, and Geotechnical, and literally hundreds of different subcategories of engineering under each branch.

There are about 40 types of engineering specialists

A ____ is marked by two sets of double yellow lines, with each set having a broken line on the inside, and a solid line on the outside. white arrows appear in this lane as well.

Answers

Answer:

  center left-turn lane

Explanation:

A center left turn lane will be marked as described. The arrows, if present, generally indicate that left turns are permitted from the lane with these markings.

__

If the double yellow lines are solid, they are considered to be a "barrier" and are not to be crossed.

Answer:

 center left-turn lane

Explanation:

what is your favorite generation of the mustang?

Answers

Answer:

6TH AKA THE 2015-PRESENT

Explanation:

Answer:

I like them all except '74ish all the way up to '93.

Your friend wears earbuds while driving to school each day. Is this safe? Is it legal? Explain why or why not.

Answers

Answer:

Its not safe but it isn't illegal. Its not safe because if their volume was up they wouldn't be able to hear if someone is honking at them or listen to emergency vehicles. They would be oblivious to what's going on around them.

Explanation:

im an amazing guy <3

Which of the following is the last step in creating a budget?
A. Identify income
B. Identify variable expenses
C. Identify fixed expenses
D. Determine savings or debt

Answers

Answer:

D. Determine saving or debt

Explanation:

If you think a hazard is serious, what is the best way to ensure that OSHA will
conduct a site inspection?
Help

Answers

Answer:

The best way to ensure that OSHA will conduct a site inspection is by the submission a signed (by a current employee or employee representative) Formal Written complaints following OSHA guidelines (which can be found in the  Council of Safety and Health (COSH) website) which will enable the commencement of process for an on site inspection

As such it is advisable to go through the following procedure before, filing a complaint

1) Talk to your workers union about the hazard

2) If you do not belong to a union, talk to your co-workers

3) Inform your employer who has responsibility for on the job safety

4) Speak or have a meeting with OSHA so as to receive guidance before filing a complaint

Explanation:

If you think a hazard is serious, the best way to ensure that OSHA will conduct a site inspection is to file a complaint.

Hazard simply means a potential source of harm. It should be noted that hazards can have detrimental effect on the health of an individual.

If you think a hazard is serious, the best way to ensure that OSHA will conduct a site inspection is to file a complaint asking OSHA to inspect the workplace. In a situation whereby OSHA finds a serious hazard, it'll be kept confidential.

Read related link on:

https://brainly.com/question/25604446

You should continuously work to enhance your skills and knowledge .

Answers

Answer:

Improve Your Writing

You may need to improve your ability to express yourself in writing.

To some degree, most organisations rely on the accurate transfer of information and that calls for the accurate use of language. When speaking, most people make multiple errors of grammar and vocabulary, and nobody seems to mind. But when you are doing business at work, then the business agreement is usually in the form of a written document; and that document has to be worded properly.

How would you rate your ability to express yourself properly in writing? Are you a good writer or do you lack knowledge of grammar, punctuation, logic and rhetoric?

If you are not as good at writing as you need to be, then study grammar, study punctuation, logic and rhetoric.

Start by buying a copy of a book called 'Rex Barks' by Phyllis Davenport.

This book is the gateway to grammar - and Phyllis is phenomenal.

Explanation:

Question 6: Which of the following is NOT true if you are changing into a
turning lane?
You should activate your signals 100 feet beforehand
You should activate your signals when you get into the turn lane
You should activate your signals before you get into the turn lane
You should use your hands to signal if your lights do not work

Answers

Answer:

You should activate your signals 100 feet before you turn, becuase of that you should not wait until you are turning to turn on your signals. If you do not have working lights use your hands. So the answer that is inccorect is B.

You should activate your signals when you get into the turn lane is NOT true

Because you are supposed to single beforhand not while you're in the lane.

Im taking my drivers ed too. :)

When you arrive at an intersection with a stop sign in your direction, if there is no marked stop
line, you must
A: Stop within 10 feet of the intersecting roadway, on top of the pedestrian crosswalk if there is one.
B: Wait for pedestrians in the crosswalk to cross, then stop on the pedestrian crosswalk.
C: Stop before entering the pedestrian crosswalk.

Answers

Answer:

The answer is B. Wait for the pedestrians in the crosswalk to cross, then stop on the pedestrian crosswalk.

Based on the concept of road usage, and the available options, when you arrive at an intersection with a stop sign in your direction, if there is no marked stop line, you must Stop before entering the pedestrian crosswalk.

What is Pedestrian Crosswalk?

Pedestrian Crosswalk is a term that is used to describe a place designated for pedestrians to cross a road, street, or avenue.

Generally, the term "pedestrian crosswalk" is also used in the Vienna and Geneva Conventions, both of which pertain to road signs and road traffic.

In this case, it is expected that when you arrive at an intersection with a stop sign in your direction, if there is no marked stop line, you must stop at the edge of the intersection just before entering the crosswalk or intersection.

It's important to come to a complete stop to ensure that it is safe to proceed before proceeding through the intersection. Be careful and aware of your surroundings to ensure a safe and steady flow of traffic.

Hence, in this case, it is concluded that the correct answer is option C. Stop before entering the pedestrian crosswalk.

Learn more about Pedestrian Crosswalks here: https://brainly.com/question/30752570

#SPJ2

Which type of engineering design uses an already existing design?
A. top-down design
B. spiral design
C. bottom-up design
D.
incremental design​

Answers

Answer:

The correct option is;

C. Bottom-up design

Explanation:

The bottom-up design is meant for system redesign or re-engineering of an existing design involving component upgrading or legacy systems replacement

The bottom-up design approach is also meant for applications where there is a new interface requirement for the original system in order to determine the functionality of the newly combined systems and also where a novel component is incorporated into the existing design.

The bottom-up approach starts with the analysis of the interoperability of the components to the modules and eventually the analysis of the system requirements.

The ramp in the railway station has rough surface .why?

Answers

Answer:

To increase the friction so we do not slip while walking.

Explanation:

If the surface is smooth then the frictional force between the ramp and the feet becomes less and the chances of slipping are greater.

The ramp on a railway station has a rough surface to increase friction so that we do not slip while walking on it. If the surface is smooth, then the frictional force between the ramp and the feet becomes less and the chances of slipping are greater.

if you experience brake failure...

Answers

Answer:

If your brakes go out, you want to do three things.

Explanation:

First, downshift to a lower gear. Second, if you have regular brakes pump the brake pedal fast and hard to build up brake fluid pressure.  Gradually apply the parking brake and be prepared for the car to skid. hope this helps you :)

If it is in a car, then try to safely come to a stop somehow. If there are no cars around, you can just let your car roll to a stop. Or try to stop the car using the hand brake.

If there are cars around, then try to drive off the road if it is safe.

What is version control?

Answers

Answer:

version control are a category of software tool that help a software team manage changes to source code over time.

If sail boats A and B are approaching each other with the wind on different sides, why is vessel A considered the give-way vessel (vessel that must take early and substantial action to avoid a collision)?

Answers

Answer:

The reason is because when the wind approaches each sailboat from a different side, the sailboat that the wind approaches from the port side, which is the left side is the give-way vessel.

Whereby the wind approaches the vessel A from the port (left) side then vessel A is considered the give-way vessel

The give-way vessel is the vessel that will have to take expeditious steps to create  access for the other vessels by either changing course, stopping, or moving with reduced speed

Explanation:

Steam enters an adiabatic turbine at 8 MPa and 500 C with a mass flow rate of 3 kg/s andleaves at 30 kPa.The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change of the steam, determine (a) the tem-perature at the turbine exit and (b) the power output of theturbine

Answers

Answer:

(a) The exit temperature = 69.1°C

(b)  The power output = 8.3 MW

Explanation:

(a) The enthalpy of steam at 8 MPa and 500°C is given (from online sources) as h₁ = 3399 kJ/kg

The exit temperature = The saturation temperature at 30 kPa = T₄ = 69.096 + 273.15 = 342.246 K

The exit temperature = 69.1°C

(b) The mass flow rate = 3 kg/s

The isentropic efficiency = 0.9 = (h₁ - h₂)/(h₁ - h₂[tex]_s[/tex])

s₁ = 6.727 kJ/kgK

h₂[tex]_s[/tex] = 289.229+ 2335.32* (6.8235 - 6.727 )/6.8235 = 322.26 kJ/kg

Therefore, h₂ = h₁ - (h₁ - h₂[tex]_s[/tex])*0.9

h₂ = 3399  - (3399  - 322.26 )*0.9 = 629.934 kJ/kg

The power output = [tex]\dot m[/tex](h₁ - h₂) = 3 *(3399 - 629.934) = 8307.2 kJ/s =

8.3 MW.

__is a mechanical force generated by a solid object moving through a fluid.

Answers

Answer:

Drag

Explanation:

Other Questions
Kitty buys hot chocolate sachets. There are 14 hot chocolate sachets in a small box. A small box costs 3.49. Kitty uses 3 hot chocolate sachets each day. Work out the how much Kitty spends on hot chocolate sachets in a four-week period. f(x) = x^2. What is g(x)? For how many positive integer values of N is the expression 36/N + 2 an integer? Find the area of the shaded region . RQ= 71.5 inches and PO=93.4 inches . Use 3.14 as necessary what amount is 10% more than RS. 90? An inactive student wants to follow his doctor's advice by becoming more physically active. What is the most effective thing he can do to start making physical fitness a priority? (1 point) a Schedule at least 60 minutes of physical activity every day b Purchase equipment for one activity he wants to try c Fit in physical activity if he has extra time at the end of the day d Tell others about his fitness goals and workout plans Erica can run 1 / 6 fraction of a kilometer in a minute. Her school is 3 / 4 of a kilometer away from her home. At this speed, how long would it take Erica to run home from school? answer quick plz The mean area of 7 halls is 55m.If the mean of 6 of them be 58m, find the area of the seventh all. 4. Mention any three ways of preserving our traditional technology andskills. Which Mean Absolute Deviation represents more consistency? 15.2 or 10.9 Which of the following is a true statement? Directors cannot change any lines from a text or script. Actors must interpret their characters as the author of the text intended them to. Directors have dramatic license to interpret a story in any way they choose. A director must use the same setting that is described in a novel or script. A coin is tossed. What is the theoretical probability of the coin NOT showing tails?P(Not tails) = 7.Which of the following factors does not cause weathering of rocks.A. lightB. temperatureC. waterD. wind what do you do when you are single ? A company completes construction of a $400 million offshore oil platform and places it into service on January 1. State law requires that the platform be dismantled and removed at the end of its useful life, which is estimated to be 10 years. The company estimates that the cost of dismantling the platform will be $20 million. The discounted value of the liability is $9 million using the company's credit-adjusted, risk-free rate. The company has already capitalized the $400 million construction cost of the platform. What amounts should the company record as liability and expense when the asset is placed into service Automotive air bags inflate when sodium azide decomposes explosively to its constituent elements: 2NaN3 (s) 2Na (s) + 3N2 (g) How many grams of sodium azide are required to produce 30.5 g of nitroge A middle school has 470 students. Regina surveys a random sample of 40 students and finds that 28 have cell phones. How many students at the school are likely to have cell phones? A. 132 students B. 188 students C. 329 students D. 338 students Please include ALL work! al apretar las tuerca despus de colocar una llanta de refaccin Cmo puedo asegurarse de que la llanta este alineada correctamente contra la superficie del montaje detrs de ella A die is rolled five times and the number of fours that come up is tallied. Find the probability of getting the given result. Exactly 3 fours. A. 0.161 B. 0.002 C. 0.116 D. 0.216 How were people who had not invested in the stock market affected by the crash? A. They found themselves as being much wealthier than before B. They were largely unaffected C. They were able to open up new businesses more easily D. Banks had invested, which lost most of their money