Final answer:
The speed of sound in different substances can be predicted based on the kinetic theory of matter. Sound travels fastest in solids, followed by liquids, and then gases. Steel will have the highest speed of sound, followed by 50°C air, 25°C air, and water.
Step-by-step explanation:
The speed of sound in different substances can be predicted based on the kinetic theory of matter. The primary factor that affects the speed of sound is the medium through which it travels. In general, sound travels fastest in solids, followed by liquids, and then gases.
Steel is a solid material, so it will have the highest speed of sound among the given substances. Water is a liquid, so it will have a slower speed of sound compared to steel. Air is a gas, and its speed of sound depends on its temperature.
Using the kinetic theory of matter, we know that at the same temperature, the particles in a gas move faster compared to those in a liquid or solid. Therefore, 50°C air will have a faster speed of sound compared to 25°C air.