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Natalka [10]
3 years ago
14

Please help! ;(

Computers and Technology
2 answers:
Art [367]3 years ago
8 0
Okay u have to use my teqnieq and search it up because i said so and it wil get u the right answer
aleksandrvk [35]3 years ago
3 0

Answer:

For each of the following file extensions, select the correct file format from the drop-down menu.

avi  

✔ Audio video interleave

bmp  

✔ Bitmap image

docx  

✔ Microsoft Word Open XML

epub  

✔ Open eBook

.ibooks  

✔ Multi-Touch iBook

.rtf  

✔ Rich text format

.pdf  

✔ Portable document format

.txt  

✔ Plain text

Explanation:

<em>IM A DIFFERENT BREEED!</em>

<em></em>

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A. Calculate the diffusion coefficient for magnesium in aluminum at 450°C.
SIZIF [17.4K]

Answer:

a) D = 4.88 * 10^(-14) m^2 / s

b)   <em>t </em>= 1.1 hr

Solution:

a) Magnesium in Aluminum diffusion:

D = Do * exp(-Qd / RT)

  =  (1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15)

  = 4.88 * 10^(-14) m^2 / s

D = 4.88 * 10^(-14) m^2 / s

b) The composition remains same at say the distance Xo:

(Cx - Co) / (Cs - Co) = Constant

Xo^2 / D_{550} * <em>t </em>= Xo^2 / D_{450} * 15

D_{550} * <em>t </em>= D_{450} * 15

(1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15) * <em>t</em>

(4.88 * 10^(-14) m^2 / s) * 15

by, solving for <em>t </em>we get:

 <em>t </em>= 1.1 hr

So, the time required is 1.1 hr.

5 0
3 years ago
Protecting data security, privacy, and integrity are important database functions. What activities are required in the DBA's man
Mrrafil [7]

Answer:

Coordinating, monitoring, and allocating database administration resources

Explanation:

people and data. Defining goals and formulating strategic plans for the database administration function.

Separate database servers and web servers.  

Use web application and database firewalls.  

Secure database user access.  

Regularly update your operating system and patches.  

Audit and continuously monitor database activity.  

Test your database security.  

Encrypt data and backups.

The DBA are responsible to authorizing access the database, coordinate and monitor, and acquiring software/ hardware resources. The database designers are responsible to identify the data that to be stored in the database and choose suitable structures to store this data.

Software installation and Maintenance.

Data Extraction, Transformation, and Loading.

Specialized Data Handling.

Database Backup and Recovery.

Security.

Authentication.

Capacity Planning.

Performance Monitoring.

7 0
3 years ago
(ATRCKALLB) __________is an input device that contains a movable ball on the top.​
nikitadnepr [17]

Answer:

trackball

Explanation:

A trackball can be seen on a mouse.

3 0
2 years ago
You're the sole IT employee at your company, and you don't know how many users or computers are in your organization. Uh oh! Wha
Neporo4naja [7]

Answer

Directory Services

<u></u>

<u>Definition</u>

It is a type of software that is used to unify and customize the resources available at the network.

<u>Explanation</u>

This software is used to gather the information and addresses of all computers connected on the network.

It is a type of information store, where all the information related to resources (computer) and services of network has been stored. It also gives administrator rights to the single point to manage whole network resources.

This is the reason, Option "D" is the best choice for me as sole IT employ in a company. I will prefer directory services software to gather the information of all computers of organization and manage users in company.  

4 0
4 years ago
Calculate the number of telephone
olchik [2.2K]

Answer:

yho

Explanation:

hayi no ntwana.... lala boy

6 0
3 years ago
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