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aniked [119]
3 years ago
12

Find the unknown quantities

Computers and Technology
1 answer:
MrMuchimi3 years ago
3 0

Answer:

I = 11/2 = 5.5

R = 60/11 ≈ 5.5Ω

Explanation:

You use V = I·R twice.

Entire circuit: 140 = I·(20+R)

Resistor: 30 = I·R

Solving this system of equations gives:

140 = I·(20+R) = 20I + IR

30 = I·R

140 = 20I + 30

20I = 110

I = 11/2 = 5.5

R = 60/11 ≈ 5.5Ω

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Which key retains its uniqueness even after you remove some of the fields?
Natasha_Volkova [10]

Answer:

Primary key retains its uniqueness even after you remove some of the fields.

Explanation:

I am assuming that this question is related to database. Therefore, I am answering it according to database context.

In database, you can have multiple rows and columns. Each column shows a specific attribute while each row plots the data according to the attributes. However, there is the first column of each of main table that has unique set of values. It is called the Primary Key. Some key features of primary key are:

  • It always contains the unique value.
  • Its value cannot be null.
  • A table can have at max one primary key.
  • It can be the combination of multiple columns but it must be unique.

Therefore, the primary key has the ability to retain its uniqueness even after you remove some of the fields.

8 0
4 years ago
Sentence Deobfuscate Name this file deobfuscate.cpp Hints: Don’t overthink this problem. Prompt the user to enter a collection o
nordsb [41]

Answer:

In C++:

#include <iostream>

using namespace std;

int main(){

   string text,lengt;

   cout<<"Please enter obfuscated sentence: ";    cin>>text;

   cout<<"Please enter deobfuscation details: ";    cin>>lengt;

   string t1, t2;

   int kount = 0;

   for(int i = 0;i<lengt.length();i++){

   kount+=(int)(lengt[i]-'0');

   t1 = text.substr(0, kount);

   t2 = text.substr(kount, text.length()-1);

   text = t1 +" "+ t2;

   kount++;   }

   cout<<"Deobfuscated sentence: "<<text;

   return 0; }

Explanation:

This declares the text and the deobfuscation details as string

   string text,lengt;

This prompts for the sentence

   cout<<"Please enter obfuscated sentence: ";     cin>>text;

This prompts for the details

   cout<<"Please enter deobfuscation details: ";     cin>>lengt;

t1 and t2 are declared as string. They are used to split the texts into 2 parts

   string t1, t2;

This declares and initializes a count variable to 0  

   int kount = 0;

This iterates through the deobfuscation details

for(int i = 0;i<lengt.length();i++){

This gets each deobfuscation character

   kount+=(int)(lengt[i]-'0');

The next two instructions splits the text into 2

This gets from 0 to kount.

   t1 = text.substr(0, kount);

This gets from kount to the last index

   t2 = text.substr(kount, text.length()-1);

The new string or sentence is calculated here

   text = t1 +" "+ t2;

The kount variable is incremented by 1

   kount++;   } The loop ends here

This prints the new sentence

   cout<<"Deobfuscated sentence: "<<text;

<em>See attachment for program file</em>

Download cpp
7 0
3 years ago
What is an icon or animation used to represent aparticipant in an internet chat referred to as?
Veronika [31]
Emoji is an icon or animation used to represent a participant in an internet chat.
8 0
3 years ago
Python's ____ mechanism allows the programmer to view an interface for an entire class or an individual method, at the shell pro
eduard

The question above has multiple choices as follows;

a. API

b. docstring

c. help

d. man

Well, I am stuck between B and C. I’ll however settle for (B) docstring.


Python docstrings provide an easier way to associate documentation with python classes, modules and functions. The interactive help function on the other is built in and is intended for interactive use. This function exists to view help interactively. With the help feature, you can quickly learn classes, modules, functions and many more.






8 0
3 years ago
What is full form of cpu ?​
topjm [15]

Answer:

central processing unit

7 0
3 years ago
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