Question

what do the laws of thermodynamics state about the total energy coming out of a system compared to the total energy (not useful energy in this instance) going into the system? total energy out of a system is always less than total energy input. energy out of a system is always more than energy going in. energy output of a system doesnt correlate to energy input. total energy out of a system is always equal to total energy going in.

Explanation:

The first law of thermodynamics (conservation of energy) states that energy cannot be created or destroyed, only transferred or transformed. So the total energy output of a system should equal the total energy input (considering all forms of energy, including non - useful like heat loss). The option "Total energy out of a system is always LESS than total energy input" is incorrect as it goes against energy conservation. "Energy out of a system is always MORE than energy going in" is also wrong as energy can't be created. "Energy output of a system doesn't correlate to energy input" is incorrect because of the conservation principle.

Answer:

D. Total energy out of a system is always EQUAL to total energy going in. (Note: Assuming the last option is labeled D, if the original labels are different, adjust the label accordingly. The key is the statement "Total energy out of a system is always EQUAL to total energy going in" as per the first law of thermodynamics.)