For sound to physically push objects back, it would require extremely high sound intensities and frequencies outside the range of human hearing. Let's break down the two aspects involved:
- Sound Intensity/Power: The power of a sound wave determines its ability to exert force on objects. The unit used to measure sound intensity is the decibel (dB). The threshold of human hearing is generally considered to be around 0 dB, and normal conversation occurs at approximately 60 dB. Louder sounds, such as a rock concert, can reach around 120 dB.
To have a significant pushing effect on objects, sound intensities would need to be much higher. However, it's important to note that extremely high sound intensities can be dangerous and potentially harmful to humans and other living beings.
- Frequency: The frequency of the sound wave determines its pitch or tone. In terms of pushing objects, the frequency itself is not the critical factor; instead, it's the sound intensity or power. However, higher frequencies are generally associated with shorter wavelengths, which may have a more localized effect on objects.
To generate sound waves capable of physically pushing objects back, you would need intense, high-frequency sound waves that are well beyond the range of human hearing. These sound waves would typically fall into the ultrasonic or even hypersonic range.
It's worth noting that the ability of sound waves to exert force on objects is limited. Other forms of energy, such as air pressure or direct physical contact, are more commonly employed to move objects.