A pressure vessel contains 8 kg of nitrogen with internal energy of 4.6 MJ at a pressure of 3 MPa. What is the specific internal energy of the gas in MJ/kg? (Don't type the units)
A pressure vessel contains 8 kg of nitrogen with internal energy of 4.6 MJ at a pressure of 3 MPa. What is the specific internal energy of the gas in MJ/kg? (Don't type the units)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Q4
![QUESTION 3
Two identical vessels are connected by a tube with a closed valve. Each vessel contains 3 kg of liquid water at 20°C and 100 kPa with specific internal
energy of 80 kJ/kg. They are vented to the atmosphere at 100 kPa. The valve is opened, and the contents are pumped so that they mix freely. Enegy
transfer to/from the vessels due to pumping and all other processes is negligible. Which of the following statements is true about the combined
contents? (There may be multiple correct answers, or none!)
O The internal energy of the combined system is 240 kJ.
O The temperature of the combined system is 40°C.
O The entropy of the combined system is double the initial entropy in one of the vessels
O The specific internal energy of the combined system is 80 kJ/kg.
O The temperature of the combined system is 20°C.
O The specific volume of the combined system is equal to the initial specific volume of one of the vessels.
O The pressure in the combined system is 100 kPa.
O The specific volume of the combined system is double the initial specific volume of one of the vessels.
QUESTION 4
A pressure vessel contains 8 kg of nitrogen with internal energy of 4.6 MJ at a pressure of 3 MPa. What is the specific internal energy of the gas in
MJ/kg? (Don't type the units)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F576fbd54-3737-4dc1-bc60-067634c21ca8%2F4d572e95-7f7e-460c-a39e-1a1245f3d562%2Fyl0el0s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION 3
Two identical vessels are connected by a tube with a closed valve. Each vessel contains 3 kg of liquid water at 20°C and 100 kPa with specific internal
energy of 80 kJ/kg. They are vented to the atmosphere at 100 kPa. The valve is opened, and the contents are pumped so that they mix freely. Enegy
transfer to/from the vessels due to pumping and all other processes is negligible. Which of the following statements is true about the combined
contents? (There may be multiple correct answers, or none!)
O The internal energy of the combined system is 240 kJ.
O The temperature of the combined system is 40°C.
O The entropy of the combined system is double the initial entropy in one of the vessels
O The specific internal energy of the combined system is 80 kJ/kg.
O The temperature of the combined system is 20°C.
O The specific volume of the combined system is equal to the initial specific volume of one of the vessels.
O The pressure in the combined system is 100 kPa.
O The specific volume of the combined system is double the initial specific volume of one of the vessels.
QUESTION 4
A pressure vessel contains 8 kg of nitrogen with internal energy of 4.6 MJ at a pressure of 3 MPa. What is the specific internal energy of the gas in
MJ/kg? (Don't type the units)
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