In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the sys
1 answer:
Answer:
2500 J
Explanation:
We can solve the problem by using the first law of thermodynamics:
where
Uf is the final internal energy of the system
Ui is the initial internal energy
Q is the heat added to the system
W is the work done by the system
In this problem, we have:
Q = +1000 J (heat that enters the system)
W = +500 J (work done by the system)
Ui = 2000 J (initial internal energy)
Using these numbers, we can re-arrange the equation to calculate the final internal energy:
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Answer:
The displacement is
The distance is
Explanation:
From the question we are told that
The height from which the ball is dropped is
The height attained at the first bounce is
The height attained at the second bounce is
The height attained at the third bounce is
Note : When calculating displacement we consider the direction of motion
Generally given that upward is positive the total displacement of the ball is mathematically represented as
Here the 0 show that there was no bounce back to the point where Billy released the ball
=>
Generally the distance covered by the ball is mathematically represented as
The 2 shows that the ball traveled the height two times
=>