Question

farah is doing an experiment that involves calculating the speed of a longitudinal wave. what will most likely happen if she increases the temperature in the room?
the amplitude of the wave will increase.
the amplitude of the wave will decrease.
the speed of the wave will increase.
the speed of the wave will decrease.

Explanation:

Longitudinal waves (like sound waves in air) have their speed related to the medium's properties. For air (a common medium in a room), temperature affects the speed of sound (a longitudinal wave). The formula for the speed of sound in air is approximately \( v \approx 331 + 0.6T \) (where \( T \) is temperature in °C). As temperature (\( T \)) increases, the speed (\( v \)) increases. Amplitude of a wave is related to its energy/intensity, not directly to temperature in this context. So increasing room temperature increases the speed of the longitudinal wave.

Answer:

C. The speed of the wave will increase