What is the normal and critical depth in a rectangular, concrete-lined channel, with b=2 m wide, X= 0.001 m/m, and Q= 1 m3/s? Assume a spillway is to be placed in this channel and the spillway will raise the flow depth 0.15 m. How far upstream will flow depth be equal the normal depth (backwater curve). The backwater curve must be presented in form of Excel spreadsheet and graphically showing the water-surface-profile-computation and the energy grade line. To compute the water-surface-profile use a value of the 1 cm of difference between Δx depths.

answer:

31

explanation:

answer:

ur mom

explanation:

answer:

when he is talking to you he wont look at you or gaf that you are alive, that is how you know

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)