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
Which character trait could be associated with this statement
nataly862011 [7]
Hubris for sure! make sure you retain this one
8 0
3 years ago
Read 2 more answers
Please help with this
andreev551 [17]

Answer:

Paradox

I dont know

Guess i guess

3 0
3 years ago
C. Complete the conversation. Use the correct form of the verbs in parentheses. Then practice the
atroni [7]
‘ I have had’ is the answer
6 0
3 years ago
What is used to communicate from one character to another?
DIA [1.3K]

Answer:

The correct answer is D) dialogue.

4 0
3 years ago
Read 2 more answers
Based on the reading selection you chose, create a thesis statement. The thesis statement should show how the main conflict in t
Rama09 [41]

Hello. As you have not informed the reading options that this question refers to, it is not possible that this question can be answered accurately. However, I will try to help you in the best possible way.

In order for you to be able to write a thesis statement, you must in a few lines summarize the central point of the text and issue a position on it. An example of this can be seen in a statement and thesis on the book "All the Bright Places" that says: "The book points to family neglect in relation to adolescents' feelings as an aggravation of childhood depression and the negative results that it can to tease."

3 0
3 years ago
Read 2 more answers
Other questions:
  • 1. Which joiner shows a contrast between coordinate ideas?
    13·2 answers
  • Which two research options are examples of secondary sources? Select all the correct answers.
    12·1 answer
  • Which sentence is punctuated correctly? He said that New York’s restaurants are great, that its parks are beautiful and that its
    10·1 answer
  • Why don't many people stay at the bed and breakfast?
    7·2 answers
  • Most vending machines are designed to dispense a certain amount of product in exchange for a certain
    14·1 answer
  • Expression could be substituted for x in the second equation to find the value of y? x+2y=20
    11·1 answer
  • Helpppppppppp meee plzzzzzzzzzzzzzzzz
    8·1 answer
  • Change the following sentences into passive voice:
    13·1 answer
  • After the show was over where did the magician go?​
    13·1 answer
  • Which sentence is true about the two settings used in Bram Stoker’s Dracula?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!