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
Vinvika [58]
3 years ago
13

PLEASE HELP!!

English
2 answers:
My name is Ann [436]3 years ago
7 0

Answer:

h

Explanation:

kenny6666 [7]3 years ago
5 0
Numa máquina térmica uma parte da energia térmica fornecida ao sistema(Q1) é transformada em trabalho mecânico (τ) e o restante (Q2) é dissipado, perdido para o ambiente.



sendo:

τ: trabalho realizado (J) [Joule]
Q1: energia fornecida (J)
Q2: energia dissipada (J)


temos: τ = Q1 - Q2

O rendimento (η) é a razão do trabalho realizado pela energia fornecida:

η= τ/Q1

Exercícior resolvido:
Uma máquina térmica cíclica recebe 5000 J de calor de uma fonte quente e realiza trabalho de 3500 J. Calcule o rendimento dessa máquina térmica.

solução:

τ=3500 J
Q1=5000J

η= τ/Q1
η= 3500/5000
η= 0,7 ou seja 70%

Energia dissipada será:



τ = Q1 - Q2
Q2 = Q1- τ

Q2=5000-3500
Q2= 1500 J

Exercicio: Qual seria o rendimento se a máquina do exercicio anterior realizasse 4000J de trabalho com a mesma quantidade de calor fornecida ? Quanta energia seria dissipada agora?



obs: Entregar foto da resolução ou o cálculo passo a passo na mensagem
You might be interested in
Short stories, novellas, and novels are the most common types of_
ElenaW [278]
The most common types are definitely Fiction
4 0
3 years ago
Read the following paragraphs carefully to see if they create a mood.
Tanzania [10]
This definitely creates a mood. It describes the hardships Cory is experiencing. The paragraph describes him “ choking back tears” and “weeping openly”. This creates a very vivid picture and a mood that fits
8 0
3 years ago
Read 2 more answers
In the story "Ball hawk" by joseph bruchac why is Ball hawk an appropriate title for this story
lora16 [44]

Answer:

D.

Explanation:

A hawk catches the fly ball that Mitchell hits.

5 0
2 years ago
How can you make this sentence stronger and more descriptive? How does she know he is filled with loneliness but still has hope
Novosadov [1.4K]

Answer:

Each time she walks by him, he seems so rejected, sad, and alone, but he seems to have so much kindness and goodness to give to others.

Explanation:

3 0
3 years ago
Why is using slang inappropriate in a business setting?
Kamila [148]
The correct answer is "Slang displays a tone that is too casual"

Slang speak is highly informal, sometimes even offensive. One should never use slang in a business setting because business deals should be kept highly informal and professional. Slang shouldn't be used under any circumstance as it may insult the people with whom we are talking by making it seem that we don't appreciate them or their business endeavors.
5 0
3 years ago
Other questions:
  • What is the prefix word for incredible
    13·2 answers
  • How does Dobyns’s use of unusual structure affect the meaning of “Icarus’s Flight?”
    12·1 answer
  • What does Darry tell Ponyboy to do if "the fuzz show up" Why do you think he tells him to do this?
    13·2 answers
  • Organize the details that appear in "Dive Technology" and "Light, Cameras", Invention!" by placing them into the correct box in
    12·1 answer
  • A milestone occuring in which of these increments of time will be the farthest to the left on a timeline?
    11·1 answer
  • Use apportion in a sentence PLEASE
    7·2 answers
  • All of the following qualities might be considered characteristics of an underdeveloped country EXCEPT: A. a very low GDP per ca
    6·1 answer
  • HAVE yall read the book touching spirit bear if yes pls help!!!
    9·1 answer
  • What is your favorite breed of dog? -Puppeed Breeding<br> openingideassocials
    7·2 answers
  • Which statement describes the most likely message of this passage?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!