Question

Which of the following is another way to say that, in energy transforms, some energy is always converted unusable or unwanted forms?
A. the entropy of a system tends to decrease overtime.
B. energy transforms are never 100% efficient
C. the energy in a system is always constant
D. energy transfers are always 100% efficient

Answer 1

Option B. By not being 100% efficient, it shows that some energy is lost to unusable or unwanted sources