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pychu [463]
3 years ago
5

1. Light of wavelength 900x10-9 m is emitted by a source. What is its frequency?​

Computers and Technology
1 answer:
andrezito [222]3 years ago
7 0

therefore the frequency = 6×10^14

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Why we can not see objects around us in the dark​
malfutka [58]

Answer:

We see an object when light falls on it and gets reflected from its surface and enters our eyes. In a dark room, there is no source of light. no light falls on the surface of objects and we do not see them. This is why we cannot see the objects in a dark room.

4 0
4 years ago
What does N represent when analyzing algorithms?
Mademuasel [1]

Answer: "N" is considered as the size of the input that is being given in the algorithm.

Explanation: During a problem solving process , a algorithm is used to analyze the problem . Many function and  steps are to be taken care of while analyzing algorithm. Among analyzing step, input is also given which is usually zero more than that . An input has a certain size which is given by the initial "N".  The input size defines the length of the string for the input.

4 0
3 years ago
Help me please, I'm attempting a test<br>​
dusya [7]
It’s A it’s a keyboard
8 0
3 years ago
Read 2 more answers
Write a program that reads the contents of the two files into two separate lists. The user should be able to enter a boy’s name,
insens350 [35]

Answer:

Check Explanation.

Explanation:

A programming language is used by engineers, technologists, scientists or someone that learnt about programming languages and they use these programming languages to give instructions to a system. There are many types for instance, c++, python, Java and many more.

So, the solution to the question above is given below;

#define the lists

boyNames=[]

girlNames=[]

#open the text file BoyNames.txt

with open('BoyNames.txt','r') as rd_b_fl:

boyNames=rd_b_fl.readlines()

boyNames=[name.strip().lower() for name in boyNames]

#open the text file GirlNames.txt

with open('GirlNames.txt','r') as rd_b_fl:

girlNames=rd_b_fl.readlines()

girlNames=[name.strip().lower() for name in girlNames]

#print the message to prompt for name

print('Enter a name to see if it is a popular girls or boys name.')

while True:

#prompt and read the name

name=input('\nEnter a name to check, or \"stop\" to stop: ').lower()

# if the input is stop, then exit from the program

if name=='stop':

break

# If the girl name exits in the file,then return 1

g_count=girlNames.count(name)

# if return value greater than 0, then print message

if g_count>0:

print(name.title()+" is a popular girls name and is ranked "

+str(girlNames.index(name)+1))

# if return value greater than 0, then print message

#"Not popular name"

else:

print(name.title()+" is not a popular girls name")

## If the boy name exits in the file,then return 1

b_count=boyNames.count(name)

if b_count>0:

print(name.title()+" is a popular boys name and is ranked "

+str(boyNames.index(name)+1))

# if return value greater than 0, then print message

#"Not popular name"

else:

print(name.title()+" is not a popular boys name")

3 0
3 years ago
Unit testing:_________. A. provides the final certification that the system is ready to be used in a production setting. B. incl
NARA [144]

Answer:

Option (C) is the correct option to the following question.

Explanation:

The following option is correct because the unit testing is the process of testing a single unit of software at a time, which means the testing of each and every program separately.

In simple words, Unit testing a process of testing in which the developer executes the single method or a function, statements or loop in the program of the software to checking is it working fine or not.

7 0
3 years ago
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