An object in a vacuum has no
A) buoyant force.
B) mass.
C) weight.
D) temperature.
E) all of the above
Answer: A
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In terms of an atom's electron configuration, the letters K, L, M, and N refer to
A) different shells with n equal to 1, 2, 3, or 4 respectively. B) different sub shells with ? equal to 1, 2, 3, or 4 respectively. C) the four possible levels for the magnetic quantum number. D) the four possible quantum numbers. E) none of the above answers.
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Which would you expect to have a higher melting point: sodium chloride, NaCl, or aluminum oxide, Image?
A) The aluminum oxide has a higher melting point because it is a larger molecule and has a greater number of molecular interactions. B) NaCl has a higher melting point because it is a solid at room temperature. C) The aluminum oxide has a higher melting point because of the greater charges of the ions, and hence the greater force of attractions between them. D) The aluminum oxide has a higher melting point because of the covalent bonds within the molecule.
If you jump vertically while inside a fast-moving train that is slowing down, you land
A) a bit ahead of your original position. B) at your original position. C) a bit behind your original position.