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nikdorinn [45]
3 years ago
13

Can change the tab colors of the worksheets in excel

Computers and Technology
1 answer:
grigory [225]3 years ago
3 0

Answer:

right-click the tab, point to Tab Color and pick a color that you want. Tip: Click away from the formatted tab to see the new tab color. If you want to remove the color, right-click the tab, point to Tab Color, and pick No Color

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1.Electromagnetic waves can carry more data at higher frequencies. Why would a scientist opt to transmit data at a lower frequen
skad [1K]
1)The reason as to why scientists opt to transmit data at lower frequency  instead of electromagnetic even if it can carry more data at a higher frequencies is because using higher frequencies of electromagnetic spectrum travel shorter distances but have higher data carrying capacity.So this physical characteristic of electromagnetic waves limits the range and availability of frequencies for sending information.
2) Limitations of using electromagnetic waves in sending communication
communication is a process of transmitting and receiving information in the form of signals.high technology communication use electromagnetic waves,there are various types of electromagnetic waves which are used in communication which include radio-waves,microwaves,infrared  e.t.c some of their limitations are
i)Because there is limited number of broadcast frequencies the use of transmitters must be restricted  in some way or they will seriously interfere with each other.
ii)Through the air signals can be distorted by atmospheric conditions and signals from space are sometimes distorted by solar activity
iii)physical activities such as mountains and buildings can prevent or interfere with some transmissions
iv)Through the air signals are not private,so any tuned receiver within the range can pick up them.
3)Differences between digital and analogue signals
Analogue and digital signal are used to transmit information usually through electric signals.
An analogue signal is continuous wave denoted by sine wave and may varry in signal strength (amplitude) or frequency(time) an example is sound from human voice is analogue because waves are continuous..
A digital signal is a signal in which the original information is converted into a string of bits before being transmitted .example a must for computer processing where is described as using (0s and 1s)and therefore can not take any fractional value.
4)Advantages of using digital signals over analogue signals
one advantage of digital signals are inherently less susceptible than analog signals to interference caused by noise because with digital signal it is not necessary to evaluate precise amplitude,frequency or phase.
Another advantage based in capacity is that digital signals carry more information per second than analogue signals.
Digital signals maintain their quality over long distances better than analogue signals.
5)How we use digital and analogue signals in our everyday live
digital signal processing is the way of life of current generation 
example is mobile phones do alot of digital signal processing .they process our our speech digitally to remove background noise,echo  e.t.c
Television also do a lot of digital processing of video,audio signal to present them in a better way.
How radio telescopes are used to explore space
A radio telescope is a specialized antenna and radio receiver used to receive radio waves from astronomical radio sources in the sky in radio astronomy.It has several main parts, a dish and antenna,a receiver,a detector and an analyzer.The dish collects the radio signals from space ad focuses them on the antenna.
6)How radio waves are used on earth
Radio waves are used to transmit television and radio programs They have longer wave lengths and are reflected by the ionosphere
7) Reasons why telescopes convert radio waves (analog) to electrical(digital) signals for analysis
This is because signals can be easily stored and transmitted in digital form.The analog is continuous in time and it is necessary to convert this to a flow of digital values.
7 0
3 years ago
Which type of password would be considered secure?
Annette [7]
A strong password obeys some password rules, such as:
- minimum length
- using characters from different classes (uppercase, lowercase, numbers, typographic characters)

Your safest bet these days is to use a password manager and have it generate one for you, so that hackers can not guess it by understanding humans' predictable mind. ;-)
6 0
3 years ago
Re:
aksik [14]

Answer:

A) create new records

B) open and close forms

C) open database forms

F) navigate through records

G) import and export data

Explanation:

5 0
3 years ago
A company needs to store its documents in one place, share news and information with all staff, and allow access for employees w
Alenkasestr [34]
C - An Intranet will give access to all employees within the company, whether they work from home or at the office.
4 0
3 years ago
Read 2 more answers
Discribe two ways you can zoom in and out from an image
krek1111 [17]

Answer:

Select the Zoom tool, and then do any of the following:

<h2>#1. </h2>

Click and hold in the image to zoom in. Press Alt (Windows) or Option (Mac OS) to zoom out.

<h2>#2!</h2>

In the options bar, select Scrubby Zoom. Then drag to the left in the image to zoom out, or to the right to zoom in.

<h2>psst! pls, brailiest!</h2>
3 0
3 years ago
Read 2 more answers
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