in what century was plastic invented ?​

Answer:

Explanation:

XIX°

1862 : the  Parkésine  (Alexander Parkes )

Answer: 19th century

Explanation:

Plastic was invented by Alexander Parkes in Birmingham, England, with the name "Parkesin", a mixture of nitrocellulose, camphor and alcohol. At that time, rubber was used for materials to be shaped with molds instead of plastic. Parkes showed his invention to the world in 1862 at the Great International Fair. His invention won a bronze medal. Due to the high cost of rubber, Alexander Parkes' invention attracted great attention.

Possibly the largest number of different polymeric materials come under the plastic  classification. Plastics are materials that have some structural rigidity under load,  and are used in general-purpose applications.Polyethylene, polypropylene, poly(vinyl  chloride), polystyrene, and the fluorocarbons, epoxies, phenolics, and polyesters may  all be classified as plastics. They have a wide variety of combinations of properties.

Some plastics are very rigid and brittle (Figure 15.1, curve A). Others are flexible,  exhibiting both elastic and plastic deformations when stressed, and sometimes experiencing considerable deformation before fractureThere are many different polymeric materials that are familiar to us and find a wide  variety of applications; in fact, one way of classifying them is according to their enduse.

D I,II and III is the answer i think

The reasons to use simulation software in this context are I, II, and III. The correct option is D.

The process of simulating a genuine phenomenon with a set of mathematical formulas is the foundation of simulation software. It is essentially a program that allows the user to simulate an operation and view it without really conducting it.

Simulation is a decision-making and decision-support tool. You can use simulation software to assess, compare, and optimize different designs, programs, and policies. As such, it can be used to explain and defend decisions to multiple stakeholders.

By allowing the corporation to evaluate concepts early in the process before prototype automobiles are constructed, simulation software can save the company money.

Therefore, the correct option is D, I, II, and III.

To learn more about simulation software, refer to the link:

https://brainly.com/question/16192324

#SPJ2

Answer:

A and B

Explanation:

A. The CPU is bad

B. the CPU is not supported by the BIOS

Answer:

The formula to enter in E14 is as follows:

=DAYS(D14,$E$10)

Explanation:

Required

Formula to calculate the number of days between E10 and D14

The syntax to do this is:

=DAYS(end_date,start_date)

So, we have:

=DAYS(D14,E10)

The question requires a mix of relative and mixed references because cell E10 will be constant in calculating the difference for dates in other cells.

In other words, the initial date is constant for all

So, the update formula is:

=DAYS(D14,$E$10)

Notice the $ between in E10; this represents mixed referencing

When dragged to E15 till E68, the formulas in the respective cells will be:

=DAYS(D15,$E$10) .............................. =DAYS(D68,$E$10)

Answer:

The C++ statement for the given algebraic expression 5x^2 + 15k + y^-2 is ( ( 5 * ( x * x ) ) + ( 15 * k ) + ( 1 / ( y * y ) ).

Explanation:

To convert the given algebraic expression 5x^2 + 15k + y^-2 into the C++ statement without using the pow function is:

In the given algebraic expression, there are three expressions combined using the + operator.

The first algebraic expression is 5x^2.

Here, x has a power of 2, and 5 is multiplied by the result of x^2. x having the power of 2 means x is multiplied itself twice. The C++ statement for this algebraic expression is (5 * ( x * x)).

The second algebraic expression is 15k.

Here, 15 is multiplied by k. The C++ statement for this algebraic expression is (15 * k).

The third algebraic expression is y^-2.

Here, x has a power of -2. it means [tex]1/y^{2}[/tex].  The C++ statement for this algebraic expression is (1/ (y * y).

The combination of all the three C++ statement is (5 * ( x * x)) + (15 * k) + (1/ (y * y).

Answer:

overflow error

Explanation:

Sometimes, when adding two binary numbers we can end up with an extra digit that doesn't fit.

Answer:

It all depends on what you are prepared to spend and what sort of system you install. I have both grid tie and stand alone systems installed at my home, and both work really well, although we initially had some inverter problems with the grid tie system until we decided to only use top shelf gear.

We have 6.6 kW grid tie system on the roof of the house which supplies around 3 times our requirements, and a 1.5 kW stand alone system that supplies the backyard workshop and pool pump. The grid tie system cost around $6500 to install, and the small stand alone system cost $4500 although this was designed and built by myself, so a purchased system may well be more (batteries are still expensive, but this price is coming down).

In the current configuration (top tier panels, Fronius grid tie inverter and Victron stand alone inverter and charge regulator), we have had no failures in several years, and power bills are something that happen to other people.

My advice is look at what your requirements are, then double that when you spec out your system and don’t go for the cheapest price. Buy your components based on the quality and reputation of the manufacturer, it will be expensive, but you will save money in the long run. A good manufacturer will guarantee their products for at least 12 years and you should expect to get at least 20 years of life out of them.

Explanation:

Solar energy is more than enough for any business or home, but if you want to know if it is cost effective, you need to run the numbers. It does have to be grid-tied though to provide electricity at night or when cloudy for multiple days. In most cases, batteries are not cost-effective at this time.

#keep learning!!

Answer:

Fields are the components that provide structure for a table. Fields in a table store the same category of data in the same data type. For example, if you have a NAME field in a table of customers, the entries for this field are all customer names and are stored as text.

A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one

primary key.

The primary key of this table is the ISBN, which uniquely identifies a book. The title column relates to the book; this is the title of the book. Each row of this table is about one book.

Answer:

if you a student..then you need it for sure

Explanation:

Microsoft Office

Doing assignment

doing report

answer online test/quiz

movie

make money

typing

play game

Answer: Amazon Aurora

Explanation:

Amazon Aurora is a fully managed service which is vital in saving time through the automation of time consuming tasks like recovery, backup, provisioning, patching, repair, and failure detection.

Amazon Aurora also allows the encryption of databases through the use of keys that are managed through the AWS Key Management Service. Therefore, based on the information given the question, type of database service that the Architect should use is Amazon Aurora.

Answer:

The correct answer is option C (UPS).

Explanation:

Since brownouts are reduced voltages that might not be good enough for the required electricity capacity for your company, fearing that your computers (especially the servers) could be damaged, it is best to use UPS for your computer protection.

A UPS also called (Uninterruptable Power Supply) can function as a Surge suppressor when the voltages entering your company might be higher than normal, it can also function too in protecting your computers (especially the servers) in the case of a brownout when voltage required by your computers dropped below the required level. In the case of a brownout, the  UPS supplies energy stored in its batteries to make the computers keep working without going off from lack of electricity.

Answer:

Algorithm

Explanation:

Answer:

import turtle  

turtle.speed(2)

#shape

turtle.forward(100)

turtle.left(90)

turtle.forward(100)

turtle.left(45)

turtle.forward(100)

turtle.left(90)

turtle.forward(100)

turtle.left(45)

turtle.forward(100)

turtle.left(90)

turtle.forward(100)

#door

turtle.left(90)

turtle.forward(50)

turtle.left(90)

turtle.forward(25)

turtle.left(90)

turtle.forward(50)

#windows

turtle.penup()

turtle.right(90)

turtle.forward(20)

turtle.right(90)

turtle.forward(20)

turtle.pendown()

turtle.forward(25)

turtle.left(90)

turtle.forward(40)

turtle.left(90)

turtle.forward(25)

turtle.left(90)

turtle.forward(40)

Explanation:

here :)

The [tex]\boxed{sort}[/tex] feature is responsible for controlling the sequence, or order, of the records.

[tex]\red{\large\qquad \qquad \underline{ \pmb{{ \mathbb{ \maltese \: \: Mystique35☂}}}}}[/tex]

Answer:

Explanation:

Personal assistants are hired to work very closely and directly to an individual such as a manager or top ranking persons who are usually very busy and have lots of several different tasks to attend to. The personal assistant would be seen as a person who posses the right multitasking skill, good communication skill and good interpersonal relationship skills can p handle administrative duties, respond to calls and visitors who may need to see the boss, give savvy response to cliemts and visitors and a good fre of mind to ensure that all scheduled lettings, appointments, travels are clearly noted to avoid missing important schedules. Depending on the preference of the manager or boss, they may be need to make specific gender representation of the personal assistant required. Also, some have designated some jobs to suit a certain gender more than the other as the favouured gender gets considered ahead of the other during the application process for jobs of such nature.

Answer:

d. Test generators are faster than human testers

Explanation:

Test generators are automated testing applications used for testing by making use of artificial intelligence such as bots to take the place of actual users of the software or system to operate the software and detect bugs as well as other primary issues related to the functioning of the tested application

The test generators making use of automated testing are able to run through a developed application in much less time than human testers with the capability to give an analysis of the collected data

Test generators are however test generators are not adequate for carrying out a customer validation program which also include going over documentation and assessing product perception

Therefore, the correct option is test generators are more faster when testing than human testers.

Answer:

DESFRAGMENTAR

Explanation:

es el proceso de reorganizar los datos almacenados en el disco duro para que los datos relacionados se vuelvan a juntar, todos alineados de manera continua.

Answer:

option a

never heard of b, c would be called a virus and d a cookie

Explanation:

hope it is helpful to you

Answer:

import pandas as pd

pd.Dataframe(information)

Explanation:

Given :

Name Subject Marks

1 Anjan English 78

2 Shreya Science 87

3 Meena Science 81

4 Karan Maths 91

information = { 'Name' : ['Anjan', 'Shreya', 'Meena', 'Karan'], 'Subject' : ['English', 'Science', 'Science', 'Maths'], 'Marks' : [ 78, 87, 81, 91]}

The information in the table can be embedded in dictionary list as given above.

Using the pandas library in python :

The Dataframe method in pandas will create the table as shown by putting the variable as an argument in the DataFrame method.

Explanation:

A regional bank implemented an automated solution to streamline its operations for receiving and processing checks/cheques. They would like to further enhance the solution to recognize signs of potential check fraud and alert their security teams accordingly.

Which technology could be combined with the current solution to do this?​

Answer:

Machine learning

Explanation:

The technology that could be used in combining with the current solution to do this is known as MACHINE LEARNING

Given that Machine Learning is a form of Artificial Intelligence, which is designed to possess the ability to act or mimic human beings and their functional characteristics to solve human problems.

Hence, because the regional bank prefers to streamline their processes of receiving and carrying out checks/cheques while also enhancing the solution to recognize signs of potential check fraud, then the technology they could use is called MACHINE LEARNING.

This is because Machine Learning will operate like humans to solve human problems efficiently.

Answer:

Explanation:

[tex]{{hope it helps}}}[/tex]

Answer:

Use the HLL ( Java C++ ) code to fetch the commands of that program, then translate them using any translatory program such as Microsoft notepad.

Or:

Download any utility software such as Avast, thunderbird, Dr. Solomon, or Norton software

Then install it to memory.

Answer bobobobobobobobo

Answer:

1. Digital media coordinator.

2. Sound producer.

3. Digital media specialist.

4. Photographer.

Explanation:

1. Digital media coordinator: he or she is saddled with the responsibility of creating audio and video content for use on websites.

2. Sound producer: he or she records and modifies sound and music for video games and movies through the use of specialized software application such as fruity loops.

3. Digital media specialist: he or she is saddled with the responsibility of posting content such as news, pictures, graphic designs, etc., on the Internet.

4. Photographer: he or she captures images using a camera or camcorder and edits the images using a graphic design software such as Adobe Photoshop.