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Tatiana [17]
3 years ago
5

How will you identify a file type on your computer?

Computers and Technology
1 answer:
Andru [333]3 years ago
5 0

You use the extension on the end of the file to tell you the type of a file

The extension is the .whatever in the name of the file

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¿Cuál es la potencia de una lámpara de incandescencia que se conecta a la red de 220 V, sabiendo que tiene una resistencia de 50
Juliette [100K]

Answer:

  • <u>1,000W</u> (rounded to one significant figure)

Explanation:

I will answer in English.

The question is:

  • <em>What is the power of a filament lamp that connects to the 220 V network, knowing that it has a resistance of 50 ohms?</em>

<em />

<h2>Solution</h2>

<em />

<em>Power</em>, <em>voltage</em>, <em>resistance</em>, and current, are related by either of the following equations:

  • P = V × I
  • P = R × I²
  • P = V² / R

Where:

  • P is power in watts (W)
  • R is resistance in ohms (Ω)
  • V is voltage in volts (V), and
  • I is current in amperes (A)

Since you know the voltage (<em>220V</em>) and the resistance (<em>50Ω</em>), you can use the last equation:

  • P = V² / R
  • P = (220v)² / (50Ω)
  • P = 968 W

Since the magnitude 50Ω has one significant figure, your answer should be rounded to one significant figure. That is <u>1,000W.</u>

7 0
3 years ago
How can volunteering to help plan a fundraiser for your team or club be a way to develop your strengths?
marshall27 [118]
It can help you develop your leadership trait
5 0
3 years ago
Read 2 more answers
Give a big-O estimate for the number additions used in this segment of an algorithm.
rjkz [21]
Big-O notation is a way to describe a function that represents the n amount of times a program/function needs to be executed. 

(I'm assuming that := is a typo and you mean just =, by the way) 

In your case, you have two loops, nested within each other, and both loop to n (inclusive, meaning, that you loop for when i or j is equal to n), and both loops iterate by 1 each loop.

This means that both loops will therefore execute an n amount of times. Now, if the loops were NOT nested, our big-O would be O(2n), because 2 loops would run an n amount of times.

HOWEVER, since the j-loop is nested within i-loop, the j-loop executes every time the i-loop <span>ITERATES. 
</span>
As previously mentioned, for every i-loop, there would be an n amount of executions. So if the i-loop is called an n amount of times by the j loop (which executes n times), the big-O notation would be O(n*n), or O(n^2). 

(tl;dr) In basic, it is O(n^2) because the loops are nested, meaning that the i-loop would be called n times, and for each iteration, it would call the j-loop n times, resulting in n*n runs.

A way to verify this is to write and test program the above. I sometimes find it easier to wrap my head around concepts after testing them myself.
3 0
3 years ago
Points on how will successfully submit quizzes in ICT correctly?
jeka94

Answer:

I am sorry but I don't understand your question. Can you edit it and explain it more briefly?

Explanation:

6 0
3 years ago
Does single quote and double quote work same in javascript
Lemur [1.5K]

Answer:

yes!

Explanation:

the only difference is that some companies prefer one over the other as a standard

https://stackoverflow.com/questions/242813/when-should-i-use-double-or-single-quotes-in-javascript

but they work the same

5 0
2 years ago
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