Question

how viable is renewable energy? 14. approximately how much of the worlds energy comes from renewable sources? 15. explain how location plays a role in solar efficiency. 16. what is the problem with present - day power lines and why is this a global problem? 17. what are the benefits and drawbacks of using superconducting materials to transport energy? 18. why are current lithium batteries not a good alternative to liquid fuel like gasoline? energy sources

Explanation:

1. This requires research on global energy - mix data to determine the proportion of renewable energy.
2. Involves knowledge of solar cell technology to explain the role of liquid in solar efficiency.
3. Analyzes electrical engineering concepts related to power - line issues and their global implications.
4. Considers materials science and energy - transport concepts for benefits and drawbacks of superconducting materials.
5. Compares battery and fuel chemistry to explain the limitations of lithium batteries as an alternative to gasoline.

Answer:

1. Research global energy - mix data for proportion.
2. Explain based on solar cell technology.
3. Analyze using electrical engineering concepts.
4. Consider materials science and energy - transport concepts.
5. Compare based on battery and fuel chemistry.