Which statement best explains why art that illustrates bonding in water uses dashed lines for hydrogen bonds and solid lines for the bonds inside each molecule? A. Hydrogen bonds are repulsive forces, and the bonds inside each molecule are attractive forces.

B. Hydrogen bonds are permanent forces of attraction and are much harder to break than the temporary bonds inside each molecule.

C. Hydrogen bonds are attractive forces, and the bonds inside each molecule are repulsive.

D. Hydrogen bonds are temporary forces of attraction and are much easier to break than the bonds inside each molecule.

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Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.

The particles that are found in the nucleus of an atom are