Question

a system inputs 100 units of energy and outputs 70 units of energy. where does the other 30 units of energy go? into the environment as stored energy back into the system as water into the environment as heat, sound, or light

Explanation:

According to the law of conservation of energy, energy cannot be created or destroyed, only transformed. In a system, when there is an energy input and output, the difference is usually due to energy being dissipated into the environment. Stored energy is not the case here as the system has already output a certain amount. Water is not relevant to energy transformation in this context. Heat, sound, or light are common forms of energy dissipation.

Answer:

into the environment as heat, sound, or light