<ul><li>Intermediate Physics for Medicine and Biology offers numerous homework problems emphasizing the ability to understand how quantities depend on variables.</li><li>A new homework problem explores the energy of interaction between an electric dipole and an induced dipole in a dielectric as a function of distance r.</li><li>The energy of a dipole in an electric field is determined by U = -p · E, and the induced dipole in a dielectric is proportional to the electric field it experiences.</li><li>The energy varies with the cosine of the angle between the dipole and the electric field, and the dipole is attracted to the dielectric.</li><li>Van der Waals interactions in biology rely on energy falling as 1/r^6, influencing how biomolecules interact.</li><li>Fluorescence resonance energy transfer (FRET) uses dipole-dipole interactions for measuring distances between molecules, being sensitive due to the 1/r^6 energy decay.</li><li>FRET serves as a spectroscopic ruler, with the technique explored in Philip Nelson's book.</li></ul>

Dipole-Dipole Interaction

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