Stainless steel (aisi 304) ball bearings, which have uniformlybeen heated to 850 c, are hardened by quenching them in an oil baththat is maintained at 40 c. the ball diameter is 20 mm, andthe convection coefficient associated with the oil bath is 1000w/m2*k.
(a) if quenching is to occur until the surface temperature ofthe balls reaches 100 c, how long must the balls be kept in theoil? what is the center temperature at the conclusion of thecooling period?
(b) if 10,000 balls are to be quenched per hour, what isthe rate at which energy must be removed by the oil bath coolingsystem in order to maintain its temperature at 40 c?

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explanation:

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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)