FreeNotes
Statements: 1. In a busy street, traffic noise has an intensity of 10⁻² W/m². Find the intensity level in decibels. 2. A mosquito buzzing has an intensity level of 40 dB. Calculate the intensity of this buzzing sound. 3. What is the intensity level of the threshold of hearing and the threshold of pain? 4. … Read more
Use carpets and curtains to absorb sound. Install acoustic panels on walls and ceilings. Add soft furniture to reduce sound reflection. Use diffusers to scatter sound waves instead of letting them reflect directly. Related Questions: Why does sound require a medium to travel? What is the effect of humidity on the speed of sound? What … Read more
Curtains absorb sound waves rather than reflecting them, reducing reverberation and echoes. The soft fabric prevents sound energy from bouncing back into the room, lowering the overall loudness. Related Questions: Why does sound require a medium to travel? What is the effect of humidity on the speed of sound? What is the difference between audible, … Read more
Sound waves can diffract (bend) around obstacles and travel through doorways or small openings, allowing you to hear voices from another space. Light waves travel in straight lines and do not bend significantly, so you cannot see them unless there’s a direct line of sight. Related Questions: Why does sound require a medium to travel? … Read more
The vibrations of a pendulum are too slow (low frequency) to be within the audible range (20 Hz to 20 kHz). Human ears cannot detect such low frequencies. Related Questions: Why does sound require a medium to travel? What is the effect of humidity on the speed of sound? What is the difference between audible, … Read more
a. Frequency – Increases, as pitch is directly related to frequency. b. Speed – Remains the same in a given medium. c. Intensity – No direct relation, but higher frequencies may seem louder to human ears. d. Loudness – Not necessarily affected, as loudness depends on amplitude. e. Wavelength – Decreases, as frequency and wavelength … Read more
a. Is the intensity of sound in the hall doubled? No, the intensity is not simply doubled. Sound intensity levels add logarithmically, not linearly. b. Is the intensity level of sound doubled? No, doubling the intensity increases the intensity level by only 3 dB. So, if both singers produce 60 dB each, the combined intensity … Read more
The intensity level is measured in decibels (dB) using the formula: Doubling the intensity increases the intensity level by approximately 3 dB. Related Questions: Why does sound require a medium to travel? What is the effect of humidity on the speed of sound? What is the difference between audible, infrasonic, and ultrasonic sounds? What is … Read more
Light travels much faster (≈ 3 × 10⁸ m/s) than sound (≈ 340 m/s in air). This difference in speed causes us to see the event first and hear the sound shortly afterward, especially over long distances. Related Questions: Why does sound require a medium to travel? What is the effect of humidity on the … Read more
When placed on a wooden table, the phone’s vibrations cause the surface of the table to vibrate as well, amplifying the sound due to a larger vibrating area. When held in hand, our skin absorbs some of the vibrations, reducing the amplification of sound. Related Questions: Why does sound require a medium to travel? What … Read more