Ultrasonic waves cannot be heard by humans. They have frequencies higher than 20,000 Hz, beyond the range of human hearing. While some animals can detect ultrasonic frequencies, humans cannot perceive these waves audibly without the aid of specialized equipment.
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Ultrasonic waves have frequencies more than 20,000 Hz, beyond the upper limit of human hearing. They are used in various applications such as medical imaging, industrial cleaning, and sonar.
Infrasound waves have frequencies less than 20 Hz. They are below the threshold of human hearing, which ranges from 20 Hz to 20,000 Hz. Infrasound can be generated by natural events such as earthquakes and volcanic eruptions, as well as ...
The latent heat of vaporization of water is 536 Cal/g. This value represents the amount of heat required to convert 1 gram of water at its boiling point into steam without a temperature change.
Water on mountains starts boiling at a temperature less than 100°C due to the lower atmospheric pressure at higher altitudes. The reduced pressure decreases the boiling point of water, causing it to boil at temperatures below 100°C.