Answer:
D. The total energy of a system can increase only if energy enters the
system
energy must be conserved--it cannot be created or destroyed.
so, if the energy of a system increases, that energy must have come from somewhere
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The velocity decreases
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Answer:
I think the answer is B , The pieces were cooked using different methods
Answer:

Explanation:
According to the given situation, the computation is shown below:-

So,



Now as per the question it is given that
r = 0.0421KPa/Km
= 
after solving the above equation we will get
= 
or we can write the above equation in this manner, that is

Therefore we have solved the equation to reach the right answer.