Why is energy not completely recycled?

Answer 1

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The same reason as to why efficiency in energy processes and conversions is not #100%#. Some of the energy is usually lost as heat to the environment, sometimes energy loss also occurs due to friction. There are many other reasons due to which energy can be lost, so the energy transfer processes will not be completely efficient.
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Answer 2

Energy is not completely recycled due to the second law of thermodynamics, which states that in any energy transformation, some energy is lost as heat. This is often referred to as entropy, and it leads to a decrease in the overall quality of energy in a system.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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