how telecommunications works?​

Answers

Answer 1

Answer:

Telecommunications are the means of electronic transmission of information over distances. The information may be in the form of voice telephone calls, data, text, images, or video. Today, telecommunications are used to organize more or less remote computer systems into telecommunications networks.

Explanation:


Related Questions

What percentage of teens say they have witnessed cyberbullying?

50

95

70

35

Answers

A Majority of Teens Have Experienced Some Form of Cyberbullying. 59% of U.S. teens have been bullied or harassed online, and a similar share says it's a major problem for people their age

254 × (×) igual 20×()682883993

If someone said to you, “Pseudocode is a waste of time! It’s just more work because you end up writing the same program twice,” how would you explain the benefits of pseudocode?

Answers

Answer:

It allows the designer to focus on main logic without being distracted by programming languages syntax.

* Since it is language independent, it can be translated to any computer language code.

* It allows designer to express logic in plain natural language.

* It is easier to write actual code using pseudocode.

* Unlike algorithms, pseudocodes are concise so pseudocodes are more readable and easier to modify.

Explanation:

The shapes of AND, OR, and NOR gates have something in common. What is it and why do you think they share that feature?

Answers

There're all conjunctions.

You can seperate them in sentences after a comma for a run-on sentence.

I need help writing the algorithm I know how to do the flow chart for the first one but I’m not sure if the second question is a for loop

Answers

Answer:

The algorithm is as follows:

(a) Sales and commission

1. Start

2. Input Sales

3. Commission = 0.30 * Sales

3. If sales >= 4000.00 then

3.1   Commission = 0.60 * Sales

4. End If

5. Print Commission

6. Stop

(b) Amount of Rainfall

1. Start

2. Days = 1

3. Total = 0.0

4. While Days <= 31

4.1. Input Rainfall

4.2. Total = Total + Rainfall

4.3. Days = Days + 1

4.4. End If

5. Print Total

6. Stop

See attachment for flowchart

Explanation:

(a) Sales and commission

This begins the algorithm

1. Start

This gets sales from the user

2. Input Sales

This calculates the commission based on 30% (i.e. for sales < 4000)

3. Commission = 0.30 * Sales

This checks if sales is greater than or equal to 4000

3. If sales >= 4000.00 then

This calculates the commission as 60% of Sales

3.1   Commission = 0.60 * Sales

This ends the if condition

4. End If

This prints the calculated commission

5. Print Commission

This ends the algorithm

6. Stop

(b) Amount of Rainfall

This begins the algorithm

1. Start

This initializes the number of days to 1

2. Days = 1

This initializes total rainfall to 0

3. Total = 0.0

The following while loop is repeated until day 31st

4. While Days <= 31

This gets input for Rainfall from the user

4.1. Input Rainfall

This calculates the total rainfall

4.2. Total = Total + Rainfall

This increments the number of days

4.3. Days = Days + 1

This ends the if statement

4.4. End If

This prints the total rainfall

5. Print Total

This ends the algorithm

6. Stop

Please answer these computer fill in the blanks
1) operators are the _______________ used in formulas to perform a particular calculation
2) the____________feature of Excelhelps to copy the formula quickly
3) Excel provides over ________________used to perform calculations
4) ____________ category of functions includes functions for calculation, and tracking principal and interest
5) ___________ functions returns one of two results you specify based on whether the value is TRUE or FALSE

Answers

Answer:

best

cool

Explanation:

Which of these best represents a call to action?
O A. Bright colors on a billboard
O B. "Buy 1 Get One Free!"
O C. Loud background music to a commercial
O D. "Come in today!"

Answers

Answer:

d

Explanation:

d just did it

"Come in today!" best represents a call to action. Thus, option D is correct.

What is a call to action?

This is an instruction on a webpage or a house call that directs the customer to execute an action. Traditionally, a call to action is expressed as a directive and deed that a person needs to come in soon. Any layout intended to elicit an instant answer or promote an entrepreneurship culture is referred to in promotion as a "call to action."

The shop represents or says that come in today, they were for the customer to come in today and help the people to come in and get the product that is needed.

This suggests that the part there will be a change in the want of the people and the command of the people that the people should immediately want them to come in, it is a strategy to attract the customers. Therefore, option D is the correct option.

Learn more about call to action, here:

https://brainly.com/question/12170995

#SPJ2

Enumerate the steps on how to set-up the CD-ROM as the first boot device.​

Answers

Answer:

Explanation:

1)Press boot key ( Del or specified key)

to enter BIOS setup utility.

2) using the direction keys, make selection of "Advanced BIOS Features"

3)then access Advanced BIOS setting by pressing Enter key

4. Using up/ down arrow keys Select "First Boot

Device"

.

5) Using up and down keys, select "CD-ROM "

6. go back to "BIOS setting screen" by Pressing ESC key

7. Select " Save & Exit Setup"

.

Find the cost of 2m 20cm at 25p per metre​

Answers

Answer: 55 meters.

Explanation:

First convert the 20 cm to meters so the entire number is in meters.

1 meter = 100 cm

20 in cm is:

= 20/100

= 0.2 meters.

2.2 meters.

One meter costs 25p so 2.2 meters will cost:

= 2.2 * 25

= 55 meters

Which finger is used to press SHIFT key while typing!
A. Little finger
B. Thumb
C. Index finger
D. Ring Finger ​

Answers

Answer:

Little Finger (A)

Explanation:

it would be A. little finger i’m pretty sure

The equipment that makes sewing easier and faster is ________​

Answers

Answer:

its a sewing machine

Explanation:

The equipment that makes sewing easier and faster is a sewing machine

What line of code would you edit if you wanted a bigger sprite?This is computer science.Pick branliest if right


A.3

B.4

C.5

D.You have to edit the picture itself

Answers

pretty sure the answer is a-3

Answer:

C. 5

Explanation:

Line 3 refers to the positioning of the sprite.

Line 4 refers to the animation preset of the sprite.

Line 5 is the correct choice because in the code it references scale and a value which can be modified to make the sprite bigger. For example, from 0.3 to 0.5

If I'm right please give brainliest, thanks


What is programming?​

Answers

Answer:

using code etc to change how something works out make it work how you want it to. mostly code but sometimes circuit boards and stuff like that.

Explanation:

see above

Answer:

Programming is the process of creating a set of instructions that tell a computer how to perform a task.

In French class, Blue puts on a visor and the environment changes to that of a café in Paris. Which of the following terms describes this kind of technology?

Answers

Answer:

virtual reality

Explanation:

Answer:

virtual

Explanation:

virtual and realyty

Need help ASAP

Thankss + BRAINLIST only for correct answers

Answers

Why visit it?
For entertainment, purely for the user to enjoy the content that has been produced for them.

Why was it made?
Netflix is a subscription based service that has been made to allow users to stream TV shows and other entertainment sources. It was made for leisure.

PLS HELP ASAP suppose you want to find pages that contain the word German but not the word shepherd. which search would achieve this?
German OR shepherd
German- shepherd
"GERMAN shepherd"
"German"+"shepherd"

Answers

Answer: German- shepherd

Explanation:

If I want to find pages that contain the word German but not the word shepherd, the search would achieve this would be German- shepherd.

It should be noted that other options such as German OR shepherd, "GERMAN shepherd" and "German"+"shepherd" all mean that pages containing the words German and also shepherd will be found.

The (-) sign simply means that not. Therefore, the correct option is German - shepherd which means German but not shepherd.

Answer:

German- shepherd

Explanation:

PLEASE HELP ITS TIMED Ishmael would like to capture a selected portion of his screen and then capture actions he performs on that selected portion. What should he do?


Use the Video from My PC command.

Use the Insert Screen Recording control.

Create a poster frame.

Use an embed code.

Answers

Answer:

Option B

Hope this Helps!!! :)

Which option is the default when creating appointments and meetings in a user’s own calendar as it relates to Free/Busy information that others will see when looking at the user’s calendar?

a. Free
b. Working Elsewhere
c. Busy
d. Tentative
I only have 10 minutes left so please help fast!

Answers

Answer:

C !

Explanation:

Answer:

Busy

Explanation:

The schematic diagram below shows three machines in a production unit connected to a 240 volt supply.
The layout uses different types of wire for the main wire, wire 1, wire 2, and wire 3.
Calculate the maximum current that can flow through each type of wire. The diameter of a wire is related to the maximum amount of current it
can safely carry. Use Internet resources to find the most suitable gauge of wire for each part of the wiring in the circuit. List the highest American
Wire Gauge (AWG) number that you can use for each type of wire. (Hint: For the main wire, consider how the current through it relates to the
currents through each of the machines.)
Also, state how you can protect the wiring from damage If any of the machines exceeds its maximum power rating because of a malfunction.

Answers

Answer:

[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\Main \ Wire&16\frac{5}{6} &9\\&&\\Wire \ 1&9\frac{1}{6} &12\\&&\\Wire \ 2&5&14\\&&\\Wire \ 3&2.5&17\end{array}[/tex]

Explanation:

The given parameters of the circuit are;

The voltage applied to the circuit = 240 volt

The types of wire in the circuit are Main wire, wire 1, wire 2, and wire 3

The maximum current that can flow through each type of wire is given by the max power of the machine powered by the wire

Power, P = Voltage, V × Current, I

∴ I = P/V

The maximum power of the machine powered by wire 1 = 2,200 W

The current flowing through wire 1, I₁ = 2,200 W/(240 V) = 55/6 A = [tex]9\dfrac{1}{6} \, A[/tex]

The maximum power of the machine powered by wire 2 = 1,200 W

The current flowing through wire 2, I₂ = 1,200 W/(240 V) = 5 A

The maximum power of the machine powered by wire 3 = 600 W

The current flowing through wire 3, I₃ = 600 W/(240 V) = 2.5 A

Therefore, Kirchhoff's current law, we have;

The current that the main wire can carry, I = I₁ + I₂ + I₃

∴ I = 55/6 A + 5 A + 2.5 A = 50/3 A = 16.[tex]\overline 6[/tex] A

The current that the main wire can carry, I = 16.[tex]\overline 6[/tex] A

The highest American Wire Gauge (AWG) that can be used for each type of wire are listed as follows;

[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\I&16\frac{5}{6} &9\\&&\\I_1&9\frac{1}{6} &12\\&&\\I_2&5&14\\&&\\I_3&2.5&17\end{array}[/tex]

Therefore, we have;

[tex]\begin{array}{ccc}Wire \ Number &Maximum\ \ Current \ (A)& AWG\\&&\\Main \ Wire&16\frac{5}{6} &9\\&&\\Wire \ 1&9\frac{1}{6} &12\\&&\\Wire \ 2&5&14\\&&\\Wire \ 3&2.5&17\end{array}[/tex]

what is a defult? pls help if you wouldn't mind

Answers

Answer:

a beginner or a novice

Explanation:

failure to fulfill an obligation, especially to repay a loan or appear in a court of law.

Choose all items that are true about the two example of HTML shown on the right.

Example 1 will display differently than example 2 in a web browser.

They are styled differently, but will look the same in a web browser.

Example 2 is easier to analyze and repair.

The styling in example 2 is required by modern web browsers.

Answers

Answer:

2

Explanation:

Answer:

B and C

Explanation:

Frida has been given the task of creating a database to store all her company's records and sales records. She is going to produce a relational database. The customers records will have the fields Customer_id, Name, Contact_Phone, and card Number. The sales records will have the fields Invoice_number, Item_number, Item_description, Item_cost and Customer_ref.

Complete the diagram below to show how the tables will be combined.

Answers

Answer:

A value that's used to identify a record from a linked table is called a ______. ... A database administrator is setting up a new table that will contain customer ... The fields include name, address, company, phone, email, and customer ID. ... Gina does not know how to write SQL commands and no forms have been created.

Explanation:

What are some other projects or things you do in your life (other than writing an essay) where you use an iterative process?

Answers

Answer:The iterative design process occurs in a continuous cycle involving three unique stages: formulate, test, evaluate. These core elements make up the basic progression in which the development of a game will follow. The rest is simply rinse and repeat

Explanation:

Answer:

Coke has experimented with different formulations of its popular Coca Cola product, including the failed New Coke iteration. The aim is to achieve the best tasting product that customers like.

A company that is operating a factory or assembly line may experiment with different methods of arranging the assembly line or with different production methods. Each time the production process is changed, this is a different iteration. Each time the order of operations and procedures are changed, this is a different iteration. The goal is to achieve the fastest, best and most optimal method of creating a product.

A musician may start with one version of a song and refine it, making changes to a note here and there or changing the tempo and speed. Many different iterations of a song may be created this way until the optimal finished product has been created that sounds and works the best.

A cook may experiment with a recipe, tweaking the ingredients or changing different steps of the process slightly until the food tastes as good as it possibly can.

Microsoft has released multiple versions of the Windows operating system to add functionality for users and to correct bugs. Each different version is a different iteration of its operating system and the goal is for the next iteration to be better than the last.

Explanation:

Pick an example, and put it in your own words.

pls answer i need to turn it in today!!

In computing flowcharts how are decisions represented?

What is the command used most for decisions?

Answers

Answer:

See Explanation

Explanation:

How decisions are represented?

In flowcharts, decisions are represented using diamond shapes (see attachment)

Decisions could be conditional statement or repetition operations which may have the form of loops or iterations.

Either of theses are represented using the diamond shapes.

Take for instance:

To check if a is greater than b... Simply write if a > b i the diamond box

Command used for most decisions

Most decisions are conditional statements; hence, the if command is often used for decisions.

What is the name of the function below?

function go(){
alert("hello everybody");
}

Answers

Answer:

It’s Java script I think and it makes something say hello everybody

Explanation:

The answer is not border

Answers

Answer:

#footer {

   border-top: 1px solid rgba(0, 0, 0, 0.3);

   background: rgba(0, 0, 0, 0.25);

   box-shadow: inset 0 1px rgba(255, 255, 255, 0.3);

   height: 40px;

}

Explanation:

hope this helps,

Have a great day

What is the output of this Python code?
def guess(a, b, c):
if a > b and a < c:
print(True)
else:
print(false)
X = 45
y = 31
z = 78
guess(x, y, z)

Answers

Answer:

True

Explanation:

in function guess:- a = x; b = y; c = z

so 45 > 31 AND 45 < 38

since both the stements are true

True is printed

# input a mark in a subject of a student and
Check if the student is pass or not pass [pass mark=30]​

Answers

Answer:

mark = int(input("Enter mark: "))

if (mark >= 30):

 print("Pass")

else:

 print("Not pass")

1. ¿Dónde emergieron los Bancos Centrales? 2. ¿En qué siglo los Bancos Centrales se potenciaron? 3. ¿El Banco de Suecia en qué siglo fue fundado? 4. ¿En el año de 1694 qué Banco se creó? 5. ¿Quién creo en 1800 el Banco Francés? 6. ¿En qué siglo y años Estados Unidos creó el Banco Estados Unidos? 7. Entre 1861 -1865 Abraham Lincoln creo el primer Banco y único Banco Central ¿Cuál erasu objetivo? 8. ¿Cuál otras funciones cumplían los Bancos en el siglo XIX?

Answers

Answer:

. ¿Dónde emergieron los Bancos Centrales?

El primer banco central fue creado por el Parlamento Sueco en 1668, siendo su principal acreedor la Corona Sueca. Esto generó inflación y crisis financieras. Después de un siglo, en 1779, la ley fue modificada, obligando al Banco a que la masa monetaria fuese respaldada por oro en una proporción fija. Sin embargo, comenzó la guerra con Rusia y se regresó a su origen violando el precepto de estabilidad que confería ese patrón oro.

2. ¿En qué siglo los Bancos Centrales se potenciaron?

La historia de la banca central se remonta al menos al siglo XVII, con la fundación de la primera institución reconocida como un banco central, el Banco de Suecia.

3. ¿El Banco de Suecia en qué siglo fue fundado?

El primer banco central fue creado por el Parlamento Sueco en 1668.

4. ¿En el año de 1694 qué Banco se creó?

En 1694, se creó el Banco de Inglaterra, que sería el más famoso banco central durante casi 300 años.

5. ¿Quién creo en 1800 el Banco Francés?

Fue creado por Napoleón en 1800 para estabilizar la moneda después de la hiperinflación del papel moneda generado durante la Revolución Francesa y las conquistas napoleónicas.

6. ¿En qué siglo y años Estados Unidos creó el Banco Estados Unidos?

A principios del siglo XIX, Estados Unidos creó el Banco de los Estados Unidos (1791-1811) y luego un segundo Banco de los Estados Unidos (1816-1836) tras el cierre del primero. Ambos bancos se establecieron siguiendo el modelo del Banco de Inglaterra. Pero a diferencia de los británicos, los estadounidenses tuvieron una desconfianza profunda de cualquier concentración de poder financiero en general, y de los bancos centrales, en particular.

7. Entre 1861 -1865 Abraham Lincoln creo el primer Banco y único Banco Central ¿Cuál erasu objetivo?

Abraham Lincoln creó el primer y único Banco Central público del país, con el objetivo de garantizar los pagos de guerra.

8. ¿Cuál otras funciones cumplían los Bancos en el siglo XIX?

Se exigió la creación de una estructura crediticia flexible que fuera capaz de dar respuestas a las empresas de ferrocarril y a los barcos de vapor,

Explanation:

. ¿Dónde emergieron los Bancos Centrales?

El primer banco central fue creado por el Parlamento Sueco en 1668, siendo su principal acreedor la Corona Sueca. Esto generó inflación y crisis financieras. Después de un siglo, en 1779, la ley fue modificada, obligando al Banco a que la masa monetaria fuese respaldada por oro en una proporción fija. Sin embargo, comenzó la guerra con Rusia y se regresó a su origen violando el precepto de estabilidad que confería ese patrón oro.

2. ¿En qué siglo los Bancos Centrales se potenciaron?

La historia de la banca central se remonta al menos al siglo XVII, con la fundación de la primera institución reconocida como un banco central, el Banco de Suecia.

3. ¿El Banco de Suecia en qué siglo fue fundado?

El primer banco central fue creado por el Parlamento Sueco en 1668.

4. ¿En el año de 1694 qué Banco se creó?

En 1694, se creó el Banco de Inglaterra, que sería el más famoso banco central durante casi 300 años.

5. ¿Quién creo en 1800 el Banco Francés?

Fue creado por Napoleón en 1800 para estabilizar la moneda después de la hiperinflación del papel moneda generado durante la Revolución Francesa y las conquistas napoleónicas.

6. ¿En qué siglo y años Estados Unidos creó el Banco Estados Unidos?

A principios del siglo XIX, Estados Unidos creó el Banco de los Estados Unidos (1791-1811) y luego un segundo Banco de los Estados Unidos (1816-1836) tras el cierre del primero. Ambos bancos se establecieron siguiendo el modelo del Banco de Inglaterra. Pero a diferencia de los británicos, los estadounidenses tuvieron una desconfianza profunda de cualquier concentración de poder financiero en general, y de los bancos centrales, en particular.

7. Entre 1861 -1865 Abraham Lincoln creo el primer Banco y único Banco Central ¿Cuál erasu objetivo?

Abraham Lincoln creó el primer y único Banco Central público del país, con el objetivo de garantizar los pagos de guerra.

8. ¿Cuál otras funciones cumplían los Bancos en el siglo XIX?

Se exigió la creación de una estructura crediticia flexible que fuera capaz de dar respuestas a las empresas de ferrocarril y a los barcos de vapor,

When you click on what will happen?

The font will change back to the default setting.
The document will change back to the last time you saved it.
The last step will be undone.
The last step will be redone.

Answers

The last step is undone. The default font choices in Microsoft Word are one of the biggest sources of ongoing annoyance for legal users.

What is Default setting?

you can alter just two Styles (+Body and +Headings) permanently to give your papers a more professional typography.

There is a drop-down menu labeled Fonts over to the far right. You can view a list of preconfigured font sets by clicking on Fonts. You want to select Customize Fonts from here.

You can see the Body font and the Heading font on the left. Here is where you control the two Styles, +Body and +Headings, that I mentioned previously.

Therefore, The last step is undone.

To learn more about default font, refer to the link:

https://brainly.com/question/21104940

#SPJ1

Answer: C The last step will be undone. this is the Undo Icon

Explanation:

16
Mackenzie is the network administrator for a large security corporation. What task
might Mackenzie perform as part of her job?
O answering calls from customers who need help
9
developing a website for the corporation
12
connecting a new computer to the network
15
testing a new video game before its release

Answers

Answer:

Connecting a new computer to the network.

Answer:

C. Connecting a new computer to the network

Explanation:

That is part of the job and the test say it is correct.

Other Questions
The pathway in which lipoproteins are transported from the liver to cells is referred toGroup of answer choicesEndogenous pathwayExogenous pathwayApolipoprotein pathwayChylomycorn distribution pathwayTriacylglycerol absorption pathway Which of the following protocols is an Exterior Gateway Protocol (EGP)? A. BGP B. OSPF C. RIP D. EIGRP. Mr. Heyden, 72, is brought to the emergency room after an accident at his farm. The paramedics report that his left side was pinned beneath his tractor, and that when he was freed, his left lower quadrant appeared to be compressed. His blood pressure is 90/50 mm Hg and falling, and his heart rate is 116 beats/min. His pulse is thready. Mr. Heyden complains of pain in his left side and then loses consciousness.1. Mr. Heyden's low blood pressure will trigger certain compensatory mechanisms. Which statement below best reflects the changes in hormone levels that will occur?Mr. Heyden's ADH, aldosterone, and renin will increase.Mr. Heyden's ADH and renin will decrease, and his aldosterone will increase.Mr. Heyden's ADH will decrease, his aldosterone will increase, and his renin will be unchanged.Mr. Heyden's ADH will increase, and his aldosterone and renin will decrease. An investigator collects a sample of a radioactive isotope with an activity of 490,000 Bq.48 hours later, the activity is 130,000 Bq.For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. What is the half-life of the sample? Write a paragraph explaining who you think primaries should be either open or closed for both firefox and internet explorer the menu bar is hidden until you press the ________ key. administrative law is a source of american law that is comprised of statutes. TRUE/FALSE the most consolidated wine industries dominated by a few large producers can be found in: why are mechanical interlocks included on dual-element heating contactors? Why Napoleon Bonaparte died alone on an island (and what island it was?) a client is taking spironolactone. which change in the diet should the nurse teach the client to make when taking this drug? S 41. If US$ 1 is equivalent to $ 47.50, the value of US$7 in Jamaican currency is? The sampling distribution of the quantity: (n-1)s^2 / sigma^2 A. a t distribution B. a normal distribution C. an F distribution D. a chi-square distribution which of the following market indexes is likely to be rebalanced most frequently? consider the function f(x)={xif x T/F: when a user interacts with his computer, he interacts directly with the kernel of the computers operating system. . Fill in the blanks using the terms provided:PolypCicatrixMaculaPruritisVesiclesNodulePustuleHeel fissureCellulitisPsoriasisEczemaKeloidFuruncleScabies1. Sarah has always suffered from dry hands and feet. Now she is concerned that the soles of her feet are cracked. She has a ___ Heel fissure_.2. Little Joey has a small whitish colored ________________ on his arm. The white color is due to the presence of pus.3. Jenny has had her ears pierced recently. Now, she has developed a significant amount of scar tissue, otherwise known as a _______________________ in each ear lobe.4. Alex had undergone major thoracic surgery as a child. He still has the scar or ___________________ to show for it.5. Tom has a vascular growth inside his ear. This is also known as a ______________________.6. Natalie has a large birthmark called a _______________ on her left leg.7. Sandra took off her new shoes to examine the blisters on her feet. Blisters are a collection of fluid-filled sacs called _____________________.8. Irene has a rounded mass of tissue called a ________________ on her arm.9. Philip has a massive boil or _________________ on his shoulder. His dermatologist has prescribed an antibiotic cream to treat it.10. Cindy was brought to the emergency room with redness on her arm accompanied by chills and fever. The attending physician diagnosed as an infection of the deeper layers of the skin otherwise known as ____________________.11. Peter returned from a camping trip with a skin problem. He was itching, which worsened at night. He also developed scabs over the most affected areas. His dermatologist suggested a topical antibiotic cream for an infection caused by a mite. This skin condition is called ___________________________.12. Little Murphy is six months old and his skin has erupted on his elbows, neck, knees and face. He is itchy and uncomfortable. Murphy suffers from __________________.13. Gary suffers from severe itching that has resulted in pink patches on his elbows, soles of his feet, arms, etc. He suffers from _____________________ a condition characterized by itching.14. The Latin word for severe itching is ______________________. Tanya flew 2,299 miles the first year on the job. She flew 3,831 miles the second year. Tanya flew 1,510 more miles the third year than the first and second years combined. How many miles did Tanya fly the third year?Please help me!! Nerve impulses are electrical signals produced by which structure? A. lipid sheath of Schwann cell. B. plasma membrane of neuron. C. synapse How many pounds make a gallon?