Athick casting initially at a uniform temperature of 150 c has properties of ρ=2790 kg/m3, k- 1.6 w/m-k and cp=956 j/kg-k. the surface of the casting is suddenly exposed to turbulent water at 20 c, giving a very large convective heat transfer coefficient a) using an explicit finite-difference scheme with 5x-6mm, determine the length of time required for the temperature 18 mm beneath the surface to change from its initial value. b) based on the results of your finite-difference solution, determine an approximate value for the heat (q") being convected from the surface after 1.5 minutes. c) sketch a plot of surface heat flux, q", as a function of time. the time obtained in part a of part a for the temperature 18 mm from the surface d) using to change from its initial value, check the temperature at that location (x=18 mm) using a different method.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer: 5

explanation:

6-1

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)