Question

part a
recycled energy is mainly ______.
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○ kinetic or potential energy
○ energy that has been destroyed
○ use of energy otherwise wasted
○ thermal energy
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Explanation:

• Kinetic or potential energy is a general classification of energy forms, not specific to recycled energy.
• Energy cannot be destroyed (law of conservation of energy), so "energy that has been destroyed" is incorrect.
• Thermal energy is a type of energy, but recycled energy focuses on utilizing energy that would otherwise be wasted, not just thermal energy.
• Recycled energy, or energy recycling, involves capturing and reusing energy that would otherwise be lost (e.g., waste heat, kinetic energy from braking in hybrid cars), so "use of energy otherwise wasted" is the correct description.

Answer:

C. use of energy otherwise wasted