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
Mariulka [41]
3 years ago
13

Two Carnot engines operate in series such that the heat rejected from one is the heat input to the other. The heat transfer from

the high-temperature reservoir is 500 kJ. The overall temperature limits are 1000K and 400K. Both engines produce equal work. What is most nearly the intermediate temperature between the two engines?
Engineering
1 answer:
kykrilka [37]3 years ago
8 0

Answer:

Given:

high temperature reservoir T_{H} =1000k

low temperature reservoir T_{L} =400k

thermal efficiency n_{1}= n_{2}

The engines are said to  operate on Carnot cycle which is totally reversible.

To find the intermediate temperature between the two engines, The thermal efficiency of the first heat engine can be defined as

n_{1} =1-\frac{T}{T_{H} }

The thermal efficiency of second heat engine can be written as

n_{2} =1-\frac{T_{L} }{T}

The temperature of intermediate reservoir can be defined as  

1-\frac{T}{T_{H} } =1-\frac{T_{L} }{T} \\T^2=T_{L} T_{H} \\T=\sqrt{T_{L} T_{H} }\\T=\sqrt{400*1000} =632k

You might be interested in
In a much smaller model of the Gizmo apparatus, a 5 kg mass drops 86 mm (0.086 m) and raises the temperature of 1 gram of water
Orlov [11]

Answer:

The amount of energy transferred to the water is 4.214 J

Explanation:

The given parameters are;

The mass of the object that drops = 5 kg

The height from which it drops = 86 mm (0.086 m)

The potential energy P.E. is given by the following formula

P.E = m·g·h

Where;

m = The mass of the object = 5 kg

g = The acceleration de to gravity = 9.8 m/s²

h = The height from which the object is dropped = 0.086 m

Therefore;

P.E. = 5 kg × 9.8 m/s² × 0.086 m = 4.214 J

Given that the potential energy is converted into heat energy, that raises the 1 g of water by 1°C, we have;

The amount of energy transferred to the water = The potential energy, P.E. = 4.214 J.

6 0
2 years ago
Create a set of questions a company designing a new motorcycle for a younger audience might want to ask external customers to ma
Brut [27]

Answer:

Who would pay for my product or service?

Who has already bought from me?

Am I overestimating my reach?.

What does my network think?.

Am I making assumptions based on my personal knowledge and experience?

What's my revenue model

How will I sell my product or service?

How did my competitors get started?

How will I find my customers?

Is there room to expand my target market?

3 0
2 years ago
What did the US and USSR agree on in the INF Treaty? They agreed to reduce nuclear weapons. They agreed that new European nation
faust18 [17]

Answer:

they agreed to reduce nuclear weapons

4 0
2 years ago
Read 2 more answers
4. In the Hyatt Regency walkway case study, it is reported that Jack Gillum stamps the 42 shop drawings, including the revised S
mario62 [17]

Answer:

Responsibility

Explanation:

By stamping the drawings that he was looking over, Jack Gillum conveys the fact that he is accepting responsibility for this work. The purpose of Gillum's stamp is to explain that such work has been under engineering review, and that it has fulfilled all the requirements that he watches our for. By putting his stamp in this work, Gillum accepts responsibility in case an error or a discrepancy is found in the drawings.

3 0
2 years ago
The coupling is used to connect the two shafts together. Assuming that the shear stress in the bolts is uniform, determine the n
AleksAgata [21]

Answer:

n = 2r³/Rd²

Explanation:

See the attached file for the derivation.

8 0
2 years ago
Other questions:
  • The 30-kg gear is subjected to a force of P=(20t)N where t is in seconds. Determine the angular velocity of the gear at t=4s sta
    9·1 answer
  • Which of the following is not an example of heat generation? a)- Exothermic chemical reaction in a solid b)- Endothermic Chemica
    15·1 answer
  • How to get on your screen on 2k20 in every mode
    15·2 answers
  • A coal-fired power plant is burning bituminous coal that has an energy content of 12,000 Btu/lb. The power plant is burning the
    13·1 answer
  • Zack's new home is progressing well, and the foundation work is finished. The general contractor stops by Zack's present home to
    11·1 answer
  • Three spheres are subjected to a hydraulic stress. The pressure on spheres 1 and 2 is the same, and they are made of the same ma
    8·1 answer
  • Just to let you know Christmas is in 10 days&lt;3<br><br> lol
    6·2 answers
  • Which of the following parts tells the transmission how fast or slowly a vehicle is going? A) pump
    5·1 answer
  • Can somebody help me with that
    13·1 answer
  • What is a voltage divider circuit and how do you calculate the voltage across one element in a series
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!