One pound of ice at 20°F exerts its force downward. After absorbing 200 Btus, what direction(s) will the force be exerted? After absorbing 2000 Btus?
What will be an ideal response?
In the first case, force is exerted outward and downward; in the second, in all directions.
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Using a sketch, explain the difference between a roof truss and a floor truss. In which situations will you consider the use of wood floor trusses?
What will be an ideal response?
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Describe the difference between insulators, conductors, and semiconductors.
What will be an ideal response?
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The charcoal filter in an electronic air cleaning system removes which air pollutant?
A. smoke B. dust mites C. odors D. mold
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For endurance riding, each checkpoint in the race a veterinarian must clear the horse to continue.
Answer the following statement true (T) or false (F)
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