Why are older incandescent light bulbs considered

Reference no: EM133384056

Question 1. What major "revolution" took place around 10,000 years ago that allowed for an increase in the human population? What were the three regions of the world where this took place and what were the major grain for each region?

Question 2. Why are older incandescent light bulbs considered to be so inefficient? How are newer light bulbs more efficient?

Question 3. What does the term HVAC stand for?

Question 4. What is a Life Cycle Analysis (LCA)? What can it be used for?

Question 5. What is meant by the term bio-capacity?

Question 6. List and describe four of the seven common energy forms.

Question 7. A nuclear power plant is 33% efficient in producing electricity (the radiation heats water to produce steam, and the steam turns a turbine to produce electricity). The power lines are 85% efficient. If you use LED bulbs in your house that is 25% efficient, what is the overall efficiency of using nuclear power to light your house? What are the four energy conversions needed to get from Nuclear to Light Bulbs?

Question 8. What are the three energy sources and give an example of each.

Question 9. Convert the following:
40 BTU to = J (Joule)
130 kWh to = kcal
220 HP to = kW
1600 kWh = BTU

Question 10. A gas furnace is 40% efficient at producing. How many BTUs of heat are produced from 2,000 BTUs of gas?

Question 11. What are three ways that heat can be transferred?

Reference no: EM133384056

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