1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kkurt [141]
3 years ago
11

Consider a Carnot heat-engine cycle executed in a closed system using 0.028 kg of steam as the working fluid. It is known that t

he maximum absolute temperature in the cycle is twice the minimum absolute temperature, and the net work output of the cycle is 60 kJ. If the steam changes from saturated vapor to saturated liquid during heat rejection, determine the temperature of the steam during the heat rejection process.
Engineering
1 answer:
Paha777 [63]3 years ago
8 0

Answer:

T=138 °C

Explanation:

Given that

m = 0.028 kg

Net work output W= 60 KJ

T₂=2T₁

As we know that efficiency of Carnot heat engine given as

\eta=1-\dfrac{T_1}{T_2}

\eta=1-\dfrac{T_1}{2T_1}

η = 0.5

We know that

\eta=\dfrac{W}{Q_a}

Qa=heat addition

W= net work output

\eta=\dfrac{W}{Q_a}

0.5=\dfrac{60}{Q_a}

Qa= 120 KJ

From first law

Qa= W+ Qr

Qr= 120 - 60

Qr= 60 KJ  

Qr Is the heat rejection.

Heat rejection per unit mass

Qr=60 / 0.028 = 2142.85 KJ/kg

Qr= 2142.85 KJ/kg

Temperature at which latent heat of steam is  2142.85 KJ/kg will be our answer.

T=138 °C

The temperature corresponding to 2142.85 KJ/kg will be 138 °C.

T=138 °C

You might be interested in
A flow of 100 mgd is to be developed from a 190-mi^2 watershed. At the flow line the area's reservoir is estimated to cover 3900
yaroslaw [1]

Answer:

13-mi 27 acres

Explanation:

7 0
3 years ago
Java Programming: Loops and Conditionals
velikii [3]

Answer:

  1. import java.util.Scanner;
  2. import java.util.Random;
  3. public class Main {
  4.    public static void main(String[] args) {
  5.        Scanner input = new Scanner(System.in);
  6.        Random rand = new Random();
  7.        System.out.print("Enter number of questions you wish to practice: ");
  8.        int n = input.nextInt();
  9.        int i = 1;
  10.        while(i <= n){
  11.            int num1 = 1 + rand.nextInt(10);
  12.            int num2 = 1 + rand.nextInt(10);
  13.            int answer = num1 * num2;
  14.            System.out.print("Question " + i + ": " + num1 + " x " + num2 + " = ");
  15.            int response = input.nextInt();
  16.            if(response == answer){
  17.                System.out.println("Correct answer!");
  18.            }
  19.            else{
  20.                System.out.println("Wrong answer. It should be " + answer);
  21.            }
  22.            i++;
  23.        }
  24.    }
  25. }

Explanation:

Firstly, we import Scanner and Random classes (Line 1-2) as we need to get user input for number of questions and generate random number in each question.

Next, create a Scanner and Random object (Line 7-8).  Prompt user to input number of question and get the input using the Scanner object (Line 10-11).

Next create a while loop and set the condition to loop for n number of times (based on number of questions) (Line 14). In the loop, use Random object nextInt method to generate two integers between 1 -10 (Line 15-16). Prompt user to input an answer using the Scanner object (Line 18-19). If the response is matched with answer print a correct message (Line 21-22) other wise inform user they write a wrong answer and show the correct answer (Line 24-25).

8 0
4 years ago
Shops should avoid purchasing any material sold in ____________.
snow_lady [41]

Answer: Aerosol Cans

Explanation: I just did the quiz

7 0
3 years ago
Find the magnitude of the two pulling forces P and Q when their resultant is 50 N at 20° with Q. P 20°​
morpeh [17]
Two forces P and Q whose resultant is 10Newton are at right angles to each other. If P makes 30 degrees with resultant.Show me the workings of the magnitude of Q in Newton and the diagram of the vectors.
7 0
3 years ago
Anything you want to do in Hootsuite can be found in the ________, with the main workspace in the _________?
Thepotemich [5.8K]

Answer:

Anything you want to do in Hootsuite can be found in the ___ Sidebar_____, with the main workspace in the ___center______

Sidebar; center

Explanation:

The main workspace of the Hootsuite is located in the center.  The sidebar is where the core access to the Hootsuite functionality, like Streams, Inbox, Planner, Analytics, Publisher, and the App Directory, is obtained.  Hootsuite is a media management platform for curating content, scheduling posts, managing team members, and measuring performances.

5 0
3 years ago
Other questions:
  • How is the foundation for a skyscraper different from a house?
    5·1 answer
  • Put the letters representing the four main
    7·1 answer
  • ITS FOR DRIVERS ED!!
    13·2 answers
  • The Kingston-Newburgh study of fluoride for the prevention of tooth decay was a community trial that was a form of what kind of
    5·1 answer
  • Cite five factors that lead to scatter in measured material properties. Upon what three criteria are factors of safety based? A
    6·1 answer
  • A stainless steel ball (=8055 kg/m3, Cp= 480 J/kgK) of diameter D =15 cm is removed from theoven at a uniform temperature of 3
    13·1 answer
  • The Transportation and Logistics career cluster serves
    11·1 answer
  • If in Example 1.2,q = (10 - 10e2) mC, find the current at t = 0.5 s. ​
    13·1 answer
  • How many squares titles (20cm x 20cm) are needed to coat the sides and base of a pool which is 10m long, 6 meter wide and 3m dee
    8·1 answer
  • A high compression ratio may result in;
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!