When the gas was supplied with an amount of heat of 6 MJ, it expanded and performed work of 2 MJ. Find the change
| January 4, 2021 | education
When the gas was supplied with an amount of heat of 6 MJ, it expanded and performed work of 2 MJ. Find the change in the internal energy of the gas. Has it increased or decreased?
Given:
Q = 6 MJ A ‘(gas work) = 2 MJ
System si: 6MJ = 6,000,000J 2MJ = 2,000,000J
Find: ∆U =?
Decision:
Q = ∆U + A ‘∆U = Q-A’ ∆U = 6,000,000 J-2,000,000 J = 4,000,000 J ∆U positive => increased
Answer: ∆U = 4000000J
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
