Music the height of a wave or the amount of the wave carries is the amplitude. a. air b. nodes c. speed d. energy

The amplitude of the wave is relative to the maximum displacement of the particle of the medium from its position of rest. In this sense, the amplitude is the distance from the rest position to the crest, or from the same position to the th trough position, or as the height of the wave. Also, the energy that the wave carries is related to the amplitude of the waves. High energy waves are characterized by high amplitude, while the low energy wave is characterized by low amplitude.

The answer is: D.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

answer; john stuart mill's principle of utility is your answer; /// good luck