Humans can see electromagnetic radiation when the wavelength is within the spectrum of visible light. create a program to determine if a user-specified wavelength [nanometer, nm] is one of the six spectral colors listed in the following chart. your program should ask the user to enter a wavelength, then indicate in which spectral color the given wavelength falls or state if it is not within the visible spectrum.

b. check your rearview mirror

explanation:

answer:

the answer is d

explanation:

answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

  // variable

 int n;

 cout<<"enter a number:";

 // read the input

 cin>>n;

 // find the square root of the absolute value

 float square_root=sqrt(abs(n));

 // print the square_root

 cout<<"square root of "<<n<<" is: "<<square_root<<endl;

  return 0;

}

Explanation:

Read a number from user and assign it to "n".Then find its absolute value with abs() function.Then calculate the square root of the absolute value with sqrt() function.Print the square root of the number.

Output:

enter a number:-17

square root of -17 is: 4.12311

                                                         This is easy

                                                     sinserly Natalie 7 grader (this is not that hard)