If a material or substance in the state of a liquid or solid has a specific gravity less than ________ it will float
A) 2.0 B) 1.5 C) 1.0 D) 0.5
C
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To prevent cave-ins, sloped or tiered walls may be used for trenches less than _____.
a. 10' deep b. 15' deep c. 20' deep d. 25' deep
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Why are HEPA filters desirable?
What will be an ideal response?
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____________________ nipples, which are nonfunctional, appear to have craters in their centers.
Fill in the blank(s) with the appropriate word(s).
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An element's atomic number is used to identify the differences between specific elements. What determines the atomic number of an element?
A. Number of protons in the nucleus B. Number of electrons C. Sum of the neutrons and protons D. None of the above
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