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Lubov Fominskaja [6]
3 years ago
15

You started writing a paper yesterday. You worked on it again today. After a few hours, you realized that you have introduced so

me major errors and decide that it would be better to go back to yesterday’s work and start from there. Which of these will be most helpful to you?
Track Changes

Permissions

Macros

Manage Document
Computers and Technology
2 answers:
svp [43]3 years ago
6 0

Answer:

Manage Document

Explanation:

mihalych1998 [28]3 years ago
3 0

Answer:

I think it is manage document.

Explanation:

managing helps us to organize things and write things with ease.

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Answer:

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Explanation:

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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>

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