Sure, here are the answers to your questions:

Q1. The pitch of a sound is determined by its frequency. A car horn typically has a higher frequency than a guitar, so it has a higher pitch.

Q2. Three animals that can hear ultrasonic vibrations are bats, dolphins, and dogs.

Q3. The speed of sound is determined by its wavelength and frequency. The formula is Speed = Wavelength x Frequency. This means that if the wavelength increases, the speed of sound decreases if the frequency remains constant. Similarly, if the frequency increases, the speed of sound increases if the wavelength remains constant.

Q4. Sound waves are called longitudinal waves because their particles vibrate in the same direction as the direction of the wave. This is different from transverse waves, where the particles vibrate perpendicular to the direction of the wave.

Q5. If the frequency of a source of sound is 100 Hz, it vibrates 100 times per second. Therefore, in a minute (which has 60 seconds), it vibrates 100 x 60 = 6000 times.

Q6. An echo is a reflection of sound that arrives at the listener some time after the direct sound. It is often caused by the reflection of sound from a surface that is far from the source of the sound.

Q7. Waves transport energy, not matter. The particles of the medium do not move with the wave; rather, they oscillate around a fixed point.

Q8. A wave is a disturbance that transfers energy from one place to another without transferring matter.

Q9. The characteristics of sound that help us identify a person by his voice in a dark room include the pitch, timbre, and volume of the voice. These characteristics are unique to each individual.

Q10. If the amplitude of a wave is doubled, the loudness of the sound will increase. This is because the amplitude of a wave is directly related to its energy, and the energy of a sound wave determines its loudness.

Question

Sure, here are the answers to your questions:

Q1. The pitch of a sound is determined by its frequency. A car horn typically has a higher frequency than a guitar, so it has a higher pitch.

Q2. Three animals that can hear ultrasonic vibrations are bats, dolphins, and dogs.

Q3. The speed of sound is determined by its wavelength and frequency. The formula is Speed = Wavelength x Frequency. This means that if the wavelength increases, the speed of sound decreases if the frequency remains constant. Similarly, if the frequency increases, the speed of sound increases if the wavelength remains constant.

Q4. Sound waves are called longitudinal waves because their particles vibrate in the same direction as the direction of the wave. This is different from transverse waves, where the particles vibrate perpendicular to the direction of the wave.

Q5. If the frequency of a source of sound is 100 Hz, it vibrates 100 times per second. Therefore, in a minute (which has 60 seconds), it vibrates 100 x 60 = 6000 times.

Q6. An echo is a reflection of sound that arrives at the listener some time after the direct sound. It is often caused by the reflection of sound from a surface that is far from the source of the sound.

Q7. Waves transport energy, not matter. The particles of the medium do not move with the wave; rather, they oscillate around a fixed point.

Q8. A wave is a disturbance that transfers energy from one place to another without transferring matter.

Q9. The characteristics of sound that help us identify a person by his voice in a dark room include the pitch, timbre, and volume of the voice. These characteristics are unique to each individual.

Q10. If the amplitude of a wave is doubled, the loudness of the sound will increase. This is because the amplitude of a wave is directly related to its energy, and the energy of a sound wave determines its loudness.

Knowee AI · Accepted Answer