Molecular Bonds: Ionic bonding is due to
A. the sharing of electrons between atoms.
B. the transfer of electrons between atoms.
C. unequal charge distributions around neutral molecules.
D. atoms bonding to hydrogen molecules.
Answer: B
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The following formulas are supposed to describe the speed 
of a sphere sinking in a thick fluid. C is a unitless constant, 
is the fluid’s density in kg/m3, A is the sphere’s cross-sectional area, m is its mass, and is the gravitational field strength in N/kg. Which could be right?
A. 
= CA g
B. = Cmg/ A
C. = (Cmg/ A)2
D. = (Cmg/ A)1/2
E. None of these can be correct.
Suppose that, through the malicious act of an eight-dimensional alien being, the strong force was suddenly turned off throughout the universe. What would happen almost immediately to atoms?
A) Electrons would fall into the nuclei of atoms. B) Atoms would be immediately ionized. C) The nuclei of atoms would fall apart. D) Gravity would become the strongest force in nature. E) nothing
A "short circuit" is best described as
A) a high voltage that is not connected to an electrical circuit. B) a low resistance placed across a high voltage. C) an electrical circuit with a very high voltage. D) an electrical circuit with a very high resistance. E) a high resistance placed across a low voltage.
Human hearing is most sensitive around 2500 Hz. If the speed of sound is 340 m/s, what is the wavelength of this sound?
A. 340 m B. 0.14 m C. 2160 m D. 7.4 m