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
nasty-shy [4]
3 years ago
13

Which of the following statements is true? Entropy has the unit of (A) Heat (B) Work (C) Energy (D) Heat capacity (E) Temperatur

e
Engineering
1 answer:
allochka39001 [22]3 years ago
8 0

Answer:

D) Heat capacity

Explanation:

Entropy is defined as

dS = \frac{dQ}{T}

Where

dS: is an infinitesimal amount of entropy

dQ: is an infinitesimal amount of heat

T: is the temperature in absolute units

The units of this are units of heat over units of temperature.

This is the same unit used by heat capacity

[\frac{J}{K}]

Do not confuse it with the specific heat capacity. Heat capacity is a property of a body and is an extensive property, while specific heat capacity (sometimes shortened to specific heat) is a property of material and is an intensive property.

You might be interested in
A geothermal heat pump absorbs 15 KJ/s of heat from the Earth 15 m below a house. This heat pump uses a 7.45 kJ/s compressor.
Anna007 [38]

Answer:

COP of the heat pump is 3.013

OP of the cycle is  1.124

Explanation:

W = Q₂ - Q₁

Given

a)

Q₂ = Q₁ + W

     = 15 + 7.45

     = 22.45 kw

COP = Q₂ / W = 22.45 / 7.45 = 3.013

b)

Q₂ = 15 x 1.055 = 15.825 kw

therefore,

Q₁ = Q₂ - W

Q₁ = 15.825 - 7.45 = 8.375

∴ COP = Q₁ / W = 8.375 / 7.45 = 1.124

4 0
4 years ago
Read 2 more answers
Expalin the application of diesel cycle in detail.
mars1129 [50]

Explanation:

Diesel cycle:

        All diesel engine work on diesel cycle .In diesel cycle there are four process .These processes are as follows

1. Adiabatic reversible compression

2.Heat addition at constant pressure

3.Adiabatic reversible expansion

4.Constant volume heat rejection

In general compression ratio in diesel engine is high as compare to petrol engine.But the efficiency of diesel cycle is less as compare to petrol cycle for same compression ratio.

Applications of diesel cycle:

Generally diesel cycle used for heavy vehicle or equipment because heavy vehicle or equipment is required high initial torque.So this cycle have lots of applications such as in industrial machining,in trucks,power plant,in mining ,in defense or military,large motors ,compressor and pump etc.

   

5 0
4 years ago
A reversible power cycle R and an irreversible power cycle I operate between the same hot and cold thermal reservoirs. Cycle I h
anygoal [31]

Answer: Attached below is the missing diagram

answer :

A)   1) Wr > WI,     2) Qc' > Qc

B)   1) QH' > QH,   2) Qc' > Qc

Explanation:

  л = w / QH = 1 - Qc / QH  and  QH = w + Qc

<u>A) each cycle receives same amount of energy by heat transfer</u>

<u>(</u> Given that ; Л1 = 1/3 ЛR )

<em>1) develops greater bet work </em>

WR develops greater work ( i.e. Wr > WI )

<em>2) discharges greater energy by heat transfer</em>

 Qc' > Qc

solution attached below

<u>B) If Each cycle develops the same net work </u>

<em>1) Receives greater net energy by heat transfer from hot reservoir</em>

QH' > QH   ( solution is attached below )

<em>2) discharges greater energy  by heat transfer to the cold reservoir</em>

Qc' > Qc

solution attached below

4 0
3 years ago
Write the implementation (.cpp file) of the Player class from the previous exercise. Again, the class contains:
hoa [83]

Answer:

//Define the header file

#ifndef PLAYER_H

#define PLAYER_H

//header file.

#include <string>

//Use the standard namespace.

using namespace std;

//Define the class Player.

class Player

{

//Declare the required data members.

string name;

int score;

public:

//Declare the required

//member functions.

void setName(string par_name);

void setScore(int par_score);

string getName();

int getScore();    

}

//End the definition

//of the header file.

#endif

Player.cpp:

//Include the "Player.h" header file,

#include "Player.h"

//Define the setName() function.

void Player::setName(string par_name)

{

name = par_name;

}

//Define the setScore() function.

void Player::setScore(int par_score)

{

score = par_score;

}

//Define the getName() function.

string Player::getName()

{

return name;

}

//Define the getScore() function.

int Player::getScore()

{

return score;

}

7 0
3 years ago
A system that is not influence anyway by the surroundings is called a)- control mass system b)- Isothermal system c)-- isolated
NARA [144]

Answer:

Isolated system

Explanation:

By definition of a closed system it means that a system that does not interact with it's surroundings in any manner

The other options are explained as under:

Isothermal system : It is a system that does not allow it's temperature to change

Control Mass system : It is a system whose mass remains conserved which means the mass entering the system equals the mass leaving the system

Open system: It is a system that allows transfer of mass and energy across it's boundary without any opposition i.e freely.

5 0
3 years ago
Other questions:
  • There is an electric field near the Earth's surface whose magnitude is about 145 V/m . How much energy is stored per cubic meter
    14·1 answer
  • A long corridor has a single light bulb and two doors with light switch at each door.
    15·1 answer
  • 1. Differentiate between speed and velocity.<br>​
    9·2 answers
  • ?Why the efficiency of Class A amplifier is very poor​
    11·1 answer
  • Let be a real-valued signal for which when . Amplitude modulation is preformed to produce the signal . A proposed demodulation t
    9·1 answer
  • Moonbeam-Musel (MM), a manufacturer of small appliances, has a large injection molding department. Because MM's CEO, Crosscut Sa
    13·1 answer
  • Why are plastics known as synthetic materials?​
    5·1 answer
  • Describe the meaning of the different symbols and abbreviations found on the documents that they use
    11·1 answer
  • Explain the S.A. co-ordinate system used in surveying
    9·1 answer
  • Engine vacuum is being discussed. Technician A says that when the engine is operating under light loads, engine vacuum is low. T
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!