Answer:
the surface heat-transfer coefficient due to natural convection during the initial cooling period. = 4.93 w/m²k
Explanation:
check attachement for answer explanation
Answer:
The essence including its problem is listed throughout the clarification section following.
Explanation:
Projects build deliverable that seem to be the products of the venture or indeed the implementation of the project. This ensures that perhaps the agile methodology may be as broad as either the goal of the study itself as well as the coverage that would be part of a much larger venture.
For every other production to have been marked as "deliverable" within the same project, this should satisfy a few eligibility requirements:
- It should be within the development of the work.
- The interested parties-external or internal-must consent to the above. This is perhaps the product of hard effort.
So that the above seems to be the right answer.
i believe the correct answer is c but i’m sorry if i’m not correct
Answer:
The source temperature is 1248 R.
Explanation:
Second law efficiency of the engine is the ratio of actual efficiency to the maximum possible efficiency that is reversible efficiency.
Given:
Temperature of the heat sink is 520 R.
Second law efficiency is 60%.
Actual thermal efficiency is 35%.
Calculation:
Step1
Reversible efficiency is calculated as follows:



Step2
Source temperature is calculated as follows:



T = 1248 R.
The heat engine is shown below:
Thus, the source temperature is 1248 R.