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2 years ago

Monitors display images by using a grid made up of millions of tiny dots, called ________.

Computers and Technology

1 answer:

goldfiish [28.3K]2 years ago

8 0

Answer:

Pixels

Explanation:

In computing the term pixels is actually a short for picture element. It refers to a single point (a dot) in an image. Computer monitors display images by dividing the screen into several pixels (dots) which are arranged in an x,y axis (rows and columns). The arrangement of the dots are so close to each other that they will appear as though the are connected.

It is important to note that on color monitors (which are by far the commonest), every pixel is made of three dots (red, blue and green) otherwise called the RBG all converging at same point.

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You are having trouble closing a program. You have tried to hit the Close button, the keyboard shortcut to close the program, an

vladimir2022 [97]

Answer:

You can open the version of your computer or device from the task manager to see the running programs and close the application

Explanation:

Right-click on the Windows Start menu and choose Task Manager (another way to open it is to press the keyboard shortcut Ctrl + Alt + Delete and select it from the options that appear).

NOTE: Click here if you don't know how to display Windows 8 Start.

You will see the main Administrator window (as in the image above). Displays a list of the programs that are currently running.

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4 0

3 years ago

Find the propagation delay for a signal traversing the in a metropolitan area through 200 km, at the speed of light in cable (2.

Ede4ka [16]

Answer:

t= 8.7*10⁻⁴ sec.

Explanation:

If the signal were able to traverse this distance at an infinite speed, the propagation delay would be zero.

As this is not possible, (the maximum speed of interactions in the universe is equal to the speed of light), there will be a finite propagation delay.

Assuming that the signal propagates at a constant speed, which is equal to 2.3*10⁸ m/s (due to the characteristics of the cable, it is not the same as if it were propagating in vaccum, at 3.0*10⁸ m/s), the time taken to the signal to traverse the 200 km, which is equal to the propagation delay, can be found applying the average velocity definition:

$v = \frac{(xf-xo)}{(t-to)}$

If we choose x₀ = 0 and t₀ =0, and replace v= 2.3*10⁸ m/s, and xf=2*10⁵ m, we can solve for t:

$t =\frac{xf}{v} =\frac{2e5 m}{2.3e8 m/s} =8.7e-4 sec.$

⇒ t = 8.7*10⁻⁴ sec.

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3 years ago