Explore the fundamentals of sound waves in this comprehensive physics lesson. Delve into the nature of longitudinal waves, understanding the alternating regions of compression and rarefaction. Examine the speed of sound across various mediums, with a focus on its behavior in solids, liquids, and gases. Learn the equations governing sound velocity in metal rods, fluids, and gases, including the impact of temperature on sound speed in air. Gain practical knowledge through example problems, enhancing your understanding of concepts like wavelength, frequency, and the factors influencing sound propagation in different materials.