a) The wave property that determines loudness is amplitude. The greater the amplitude of a sound wave, the louder the sound will be.

b) The wave property that determines pitch is frequency. The higher the frequency of a sound wave, the higher the pitch will be.

Q12. The ceilings of concert halls are curved to help distribute sound evenly throughout the space. The curved shape helps to reflect and focus the sound waves towards the audience, creating a more immersive and balanced listening experience.

Q13. Ultrasound is used for cleaning by creating high-frequency sound waves that produce tiny bubbles in a liquid. These bubbles then collapse rapidly, creating a scrubbing action that helps to remove dirt and contaminants from surfaces.

Q14. A vibrating pendulum does not produce sound because sound requires a medium to travel through. In the case of a vibrating pendulum, the motion is not creating enough disturbance in the surrounding air or any other medium to generate sound waves.

Q15. To find the frequency of the wave, we can use the formula: frequency = number of cycles / time. In this case, the number of cycles is equal to the number of crests or troughs, which is 20. The time is given as 0.4 seconds. Therefore, the frequency of the wave would be 20 cycles / 0.4 seconds = 50 Hz.

Q16. Sound waves are called mechanical waves because they require a medium, such as air, water, or solids, to travel through. These waves propagate by causing particles in the medium to vibrate and transfer energy from one point to another. Unlike electromagnetic waves, which can travel through a vacuum, sound waves rely on the mechanical properties of a medium to propagate.

Question

a) The wave property that determines loudness is amplitude. The greater the amplitude of a sound wave, the louder the sound will be.

b) The wave property that determines pitch is frequency. The higher the frequency of a sound wave, the higher the pitch will be.

Q12. The ceilings of concert halls are curved to help distribute sound evenly throughout the space. The curved shape helps to reflect and focus the sound waves towards the audience, creating a more immersive and balanced listening experience.

Q13. Ultrasound is used for cleaning by creating high-frequency sound waves that produce tiny bubbles in a liquid. These bubbles then collapse rapidly, creating a scrubbing action that helps to remove dirt and contaminants from surfaces.

Q14. A vibrating pendulum does not produce sound because sound requires a medium to travel through. In the case of a vibrating pendulum, the motion is not creating enough disturbance in the surrounding air or any other medium to generate sound waves.

Q15. To find the frequency of the wave, we can use the formula: frequency = number of cycles / time. In this case, the number of cycles is equal to the number of crests or troughs, which is 20. The time is given as 0.4 seconds. Therefore, the frequency of the wave would be 20 cycles / 0.4 seconds = 50 Hz.

Q16. Sound waves are called mechanical waves because they require a medium, such as air, water, or solids, to travel through. These waves propagate by causing particles in the medium to vibrate and transfer energy from one point to another. Unlike electromagnetic waves, which can travel through a vacuum, sound waves rely on the mechanical properties of a medium to propagate.

Knowee AI · Accepted Answer

a) The wave property that determines loudness is amplitude. The greater the amplitude of a sound wave, the louder the sound will be.

b) The wave property that determines pitch is frequency. The higher the frequency of a sound wave, the higher the pitch will be.

Q12. The ceilings of concert halls are curved to help distribute sound evenly throughout the space. The curved shape helps to reflect and focus the sound waves towards the audience, creating a more immersive and balanced listening experience.

Q13. Ultrasound is used for cleaning by creating high-frequency sound waves that produce tiny bubbles in a liquid. These bubbles then collapse rapidly, creating a scrubbing action that helps to remove dirt and contaminants from surfaces.

Q14. A vibrating pendulum does not produce sound because sound requires a medium to travel through. In the case of a vibrating pendulum, the motion is not creating enough disturbance in the surrounding air or any other medium to generate sound waves.

Q15. To find the frequency of the wave, we can use the formula: frequency = number of cycles / time. In this case, the number of cycles is equal to the number of crests or troughs, which is 20. The time is given as 0.4 seconds. Therefore, the frequency of the wave would be 20 cycles / 0.4 seconds = 50 Hz.

Q16. Sound waves are called mechanical waves because they require a medium, such as air, water, or solids, to travel through. These waves propagate by causing particles in the medium to vibrate and transfer energy from one point to another. Unlike electromagnetic waves, which can travel through a vacuum, sound waves rely on the mechanical properties of a medium to propagate.

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