How might you separate a mixture of sand and salt?
A. just add water
B. heat the mixture until one of the components melts
C. with tweezers and a magnifying glass
D. Two of the above answers are reasonable.
Answer: D
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A building is located in Baltimore, Maryland where the annual heating degree days are 4,654. The building has a heating load (heat loss) of 30,000 Btu/h, and a design temperature difference of 52°F (68°F indoor and 16°F outdoor). Estimate the building’s annual energy consumption. If the building is heated with a furnace with an efficiency of 92%, how much gas is burned to keep the home at 68°F? State your assumptions.
What will be an ideal response?
Which of the following locations would experience a slight radiative energy deficit?
A) A
B) B
C) C
D) D
Volcanoes that have a time between eruptions of 1,000 years or greater always have a Volcanic
Explosivity Index of 5 or greater. Indicate whether the statement is true or false.
A Category 5 hurricane in the open water can obtain top wind speed comparable to ________
A) a plane flying near supersonic speed B) the top speed of an old style Volkswagen beetle C) an F1 tornado D) an F4 tornado