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
tankabanditka [31]
2 years ago
11

Calculate the change of entropy of 2 kg of air when its temperature increases from 400 K to 500 K at constant pressure equal to

300 kPa.
Engineering
1 answer:
harkovskaia [24]2 years ago
4 0

Answer:

0.45516

Explanation:

ENTROPY : Entropy is a measure of molecular disorder it is denoted by S. Entropy is also measured in terms of thermal energy and temperature it is equal to thermal energy per unit temperature.

from the table S₁=1.99194 KJ/kg.k (at 400k)

from the table S₂=2.21952 KJ/kg.k (at 500k)

so total entropy change is given by =m (S₂-S₁)

=2(2.21952-1.99194)

=0.45516

                       

You might be interested in
- Viscoelastic stress relaxation
My name is Ann [436]

Explanation:

The correct answers to the fill in the blanks would be;

1. Viscoelastic stress relaxation refers to scenarios for which the stress applied to a polymer must decay over time in order to maintain a constant strain. Otherwise, over time, the polymer chains will slip and slide past one another in response to a constant applied load and the strain will increase (in magnitude).

2. Viscoelastic creep refers to scenarios for which a polymer will permanently flow over time in response a constant applied stress.

The polymer whose properties have been mentioned above is commonly known as Kevlar.

It is mostly used in high-strength fabrics and its properties are because of several hydrogen bonds between polymer molecules.

5 0
3 years ago
What is definition of<br>computational fluid Dynamics <br>unstructured grid <br>domain<br>geometry​
Keith_Richards [23]
Najsjjsjhshehdhdhdhdhhdhdhdhdhhd
6 0
2 years ago
What is the magnetic force on a moving electric charge called
crimeas [40]
The magnetic force on a free moving charge is perpendicular to both the velocity of the charge and the magnetic field with direction given by the right hand rule. The force is given by the charge times the vector product of velocity and magnetic field.
4 0
3 years ago
Read 2 more answers
A bicycle has tires that are 26 inches in diameter. The while in motion, the tires rotate through 125 complete revolutions. How
Stolb23 [73]

Answer:

850.8480103 feet

Explanation:

First you take the diameter and find the circumference, which is (2)(pi)(r) plug in your r which is 26/2= 13 so 2(13)(pi) and multiply taht by 125 after that take your answer and divide by 12which is 850.8480103

3 0
2 years ago
What tools are used to build a watch tower PLEASE HELP ME​
harkovskaia [24]

Answer:

The trunks were all cut at the same lenght, 9 Carolingian feet, easier to carry away and to build. The construction was built by a team of four people, using traditional tools such as a hand saw, clamp, gimlet, Catalan type axe, wood hammer, chisel, two-handed wood saw, heavy wood hammer and metal wedges.

Explanation:

8 0
2 years ago
Other questions:
  • To operate a vehicle in Florida, you must
    10·2 answers
  • What is A roofed structure that is similar to a porch, but is detached from the house.
    6·2 answers
  • When -iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is
    5·1 answer
  • Define volume flow rate of air flowing in a duct of area A with average velocity V.
    13·1 answer
  • Which scientist was famous for his laws on gravity?
    10·2 answers
  • Consider the equation y = 10^(4x). Which of the following statements is true?
    9·1 answer
  • Although many countries have issues with soil erosion due to deforestation, some of the most serious effects are seen
    8·1 answer
  • A solid steel shaft ABCDE turns freely in bearings at points A and E. The shaft is driven by the gear at C, which applies a torq
    14·1 answer
  • 18. Bela is doing a continuity test. What's he checking?
    10·1 answer
  • To meet the needs of a client, what is best for an interior designer to do?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!