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xxTIMURxx [149]
3 years ago
6

When the primary key of one relation is placed in a second relation to represent a relationship, the attribute in the second rel

ation is called a(n) ________ key?
Computers and Technology
1 answer:
s2008m [1.1K]3 years ago
6 0
It is called a foreign key
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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
Write a function that receives a StaticArray where the elements are already in sorted order, and returns a new StaticArray with
Allisa [31]

The code that remove duplicate is as follows:

def remove_duplicate(mylist):

    mylist = list(dict.fromkeys(mylist))

    return mylist

print(remove_duplicate([1, 1, 2, 3, 3, 5, 6, 7]))

<h3>Code explanation</h3>

The code is written in python.

  • we defined a function named "remove_duplicate" and it accept the parameter "mylist".
  • The variable "mylist" is used to store the new value after the duplicate vallues has been removed.
  • Then, wed returned mylist.
  • Finally, we call the function with the print statement . The function takes the required parameter.

learn more on python here: brainly.com/question/21126936

7 0
3 years ago
2) List three (3) negative impact of Technology on society
Nataly [62]

Answer:

1. social media and mobile devices may lead to psychological.

2. They may contribute to more serious health conditions such as depression.

3. The overuse of technology may have a more significant impact on developing children and teenagers.

Explanation:

may this help you have a good day

5 0
3 years ago
Which soft skill involves the ability to work harmoniously with your colleagues and improve productivity?
Lina20 [59]
B.Teamwork is a soft skill involves the ability to work harmoniously with your colleagues and improve productivity. It is the collaborative effort of a team to complete a task or to achieve a common goal in the most effective and efficient way.  

 


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3 years ago
How can anger cause workplace accidents?
Umnica [9.8K]
I think the corect answer is c
8 0
3 years ago
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