Alarge refrigeration plant is to be maintained at −15◦c, and it requires refrigeration at a rate of 100 kw. the condenser of the plant is to be cooled by liquid water, which experiences a temperature rise of 8◦c as it flows over the coils of the condenser. assume that the plant operates on a vapor-compression refrigeration cycle with r-134a as the working fluid. the refrigerant enters the compressor as saturated vapor at 120 kpa and is compressed to 700 kpa. the refrigerant exits the condenser as saturated liquid. the compressor isentropic efficiency is 85%. consider cooling water as an incompressible substance with constant specific heat. determine: a. mass flow rate of refrigerant [kg/s] b. power input to the compressor [kw] c. coefficient of performance d. mass flow rate of cooling water [kg/s]

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explanation:

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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)