Using the Tafel equation, determine the activation polarization (voltage loss) associated with operation at 50 mA/cm2 and 500 mA/cm2 for: (a) a proton exchange membrane fuel cell with exchange current density of 10-4 A/cm2, and symmetry factor (transfer coefficient) of 0.5, (b) a solid oxide fuel cell with exchange current density of 0.1 A/cm2 and symmetry factor of 0.4. (c) Calculate these same losses using the Butler-Volmer equation. (d) Discuss any differences (or similarities) observed.

answer:

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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)

Explanation:

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