Asmooth sphere with a diameter of 6 inches and a density of 493 lbm/ft^3 falls at terminal speed through sea water (s. g.=1.0027). determine the terminal speed.

Given:

diameter of sphere, d = 6 inches

radius of sphere, r = = 3 inches

density,   = 493 lbm/

S.G = 1.0027

g = 9.8 m/ = 386.22 inch/

Solution:

Using the formula for terminal velocity,

=              (1)

where,

V = volume of sphere

= drag coefficient

Now,

Surface area of sphere, A =

Volume of sphere, V =

Using the above formulae in eqn (1):

=

=  

=

Therefore, terminal velcity is given by:

= inch/sec

One of the benefits of working with chlorinated polyvinyl chloride (CPVC) pipe is that it can be cut with a variety of different tools that don’t require any electricity or heat. However, different cutting methods are preferred over others, depending on the application.

When cutting CPVC pipe, it is important to make a square, flat cut. An uneven cut limits the bonding area and weakens the fitting.

To help you make the best possible cut, we’ve put together the following dos and don’ts when cutting CPVC pipe in different situations.

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)