The elevator compartment is made to rise by electrically heating the air contained in the piston and cylinder drive mechanism, and the elevator is lowered by opening a valve at the side of the cylinder, allowing the air in the cylinder to slowly escape. Once the elevator compartment is back to the lower level, a small compressor forces out the air remaining in the cylinder and replaces it with air at 20 C and a pressure just sufficient to support the elevator compartment. The cycle can then be repeated. There is no heat transfer between the piston, cylinder, and the gas; the weight of the piston, elevator, and elevator contents is 4000 kg; the piston has a surface area of 2.5m^2; and the volume contained in the cylinder when the elevator is at its lowest point level is 25 m^3. There is no friction between the piston and the cylinder, and the air in the cylinder is assumed to be an ideal gas with Cp = 30 J/mol K. Required:
a. What is the pressure in the cylinder throughout the process?
b. How much heat must be added to the air during the process of raising the elevator 3 m, and what is the final temperature of the gas?
c. What fraction of the heat added is used in doing work? What fraction is used in raising the temperature of the gas?
d. How many moles of air must be allowed to escape in order for the elevator to return to the lowest level?

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about

answer:

sure that would be nice

explanation:

answer:

All this is to say that new technologies develop quickly and continuously, and society is used to and adapts quickly to these constant innovations. ... Medical technology is always improving, leading to lower infant mortality, cures for diseases, and many more improvements in quality of life.

Explanation:

hope this helps mark me as brainiest pls

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)