An average home in the United States consumed about 1,344 m3 natural gas, 224 liters of liquid petroleum gas, 220 liters of diesel fuel oil, and 3.2 liters of kerosene.
a. How much CO2 was generated per year for an average U.S. home, due to natural gas usage?
b. Assume that 0.0545 kg of CO2 are emitted per cubic foot of natural gas burned. How much CO2 was emitted from household natural gas usage, if there were 111.1 million homes in the United States in 2005?
c. How much CO2 will be emitted from household natural gas usage, if there are 166 million homes in the United States in 2050?
What will be an ideal response?
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Explain the difference between various classes of vapor retarders. In which climates does the building code require the use of a vapor retarder, and its class? Would you specify a separate vapor retarder material in warm climates (Climate zones 1 to 3)? Give reason(s) for your answer.
What will be an ideal response?
What are the functions of the flux covering?
What will be an ideal response?
Ground is generally considered to be ____ volts in an electronic circuit.
A. 0 B. 0.5 C. 1 D. 5
One of the methods for installing control systems involves using a(n) ____________________ to terminate the different control components.
Fill in the blank(s) with the appropriate word(s).