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]
2 years ago
13

PLEASE HELP!!

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

Answer:

h

Explanation:

kenny6666 [7]2 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
. What is this passage mainly about?
galina1969 [7]
B. Should be the answer
4 0
2 years ago
Read 2 more answers
Identify the adjective clause in the following sentence my spanish teacher who wears flowers in her hair is very pretty .
GaryK [48]

My Spanish teacher <u>who wears flowers in her hair</u> is very pretty . The underlined pattern is the adjective clause. It is a clause because it is a sentence; it has got a subject : <em>who</em>, and a predicate: <em>wears flowers in her hair. </em>This clause works as an adjective because it qualifies the subject  of the main sentence : <em>My Spanish teacher</em>. The adjective clause gives some specific information about the Spanish teacher.

7 0
2 years ago
Google classroom: Types of courage assignment
Anna35 [415]

Answer:

please explain more

Explanation:

8 0
2 years ago
Read 2 more answers
A verb does not express which of the following?
FinnZ [79.3K]

Answer:  place

THat is a noun - person, place or thing

Explanation:

6 0
2 years ago
Read 2 more answers
Identify elements of sanders style in this passage?
Pani-rosa [81]

More effective than the other candidates, he would have been a great president when it came to negotiating with other countries. (if you talking about Bernie Sanders)

3 0
3 years ago
Other questions:
  • Which sentence is the hook in this introductory paragraph? For the first time in decades, Baby Boomers have been outnumbered by
    10·1 answer
  • EXPERIENCE Pet Sitter 2005 – 2006 Provided pet sitting services including dog walking, feeding, and giving medications as needed
    11·2 answers
  • Can u check this please
    6·2 answers
  • It’s Friday and you have just picked up your paycheck from your part-time job. After taxes you have made $172.83 over the last t
    13·2 answers
  • Quick question, describe the relationships between temperature, salinity, and density.
    5·1 answer
  • HURRYYYYYYY ITS DUE IN 1 hour
    5·2 answers
  • Read the following passage and answer the question.
    11·1 answer
  • How do you write it in a sentence that you aren’t friends with someone anymore and you are done being that person’s dog (push ov
    14·2 answers
  • Which of the following was NOT mentioned in the argument between Oberon and Titania?
    15·1 answer
  • Which revision of the passage best improves its clarity and flow?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!