While shouting, a person keeps the palm near the mouth because in that position, the sound energy will point in one direction only. This helps to direct the sound waves forward, increasing their intensity and focusing them toward the intended ...
Tiwari Academy Discussion Latest Questions
Two people cannot hear each other on the surface of the Moon because there is no atmosphere on the Moon. Sound waves require a medium, such as air or water, to travel and be heard. The Moon’s lack of atmosphere ...
The source that causes the most noise pollution among the options provided is Airplane taking off. Aircraft taking off produce extremely high decibel levels, affecting large areas around airports. This surpasses the noise generated by motor vehicles, railway engines, and ...
Sound travels fastest through Steel. Steel has a higher density and elasticity compared to other substances listed, allowing sound waves to propagate faster. This property makes steel an excellent conductor of sound in industrial and structural applications.
Bats can fly in the dark because they produce very intense sound waves which control it. Bats use echolocation, emitting high-frequency sound waves and interpreting the echoes to navigate and locate prey in darkness. This biological adaptation allows them to ...
The method used in cleaning the internal parts of planes is Ultrasonic wave. Ultrasonic cleaning involves using high-frequency sound waves to agitate a liquid cleaning solution. This process efficiently removes contaminants from intricate parts of aircraft engines and components without ...
The phenomenon used to detect prey, predators, or obstacles is as Formation of pulses. Animals like bats use echolocation, emitting ultrasonic pulses and detecting their echoes to locate objects. This method allows for precise navigation and hunting in environments where ...
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 specific heat of an object depends on the material composition of the object. It is a property inherent to the substance, indicating the amount of heat required to change the temperature of a unit mass by one degree Celsius.
Air conditioners control both temperature and humidity, air coolers primarily cool the air through evaporation and do not effectively control humidity.