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Anonymous users2024-02-12Answer: Tension and pluck the string or rubber band, hit it with a small hammer, blow into the cap, there is an object vibrating, the object vibrates.
By tensioning and plucking a string or rubber band, a cotton thread or rubber band can be used to make sound.
Tapping the wine glass with a small hammer will make it sound.
When you blow air into the cap, it makes a sound because the air column vibrates.
What they have in common when they make sound is that the object is vibrating, so the sound is produced by the vibration of the object.
Principle of vibration. The repetitive motion of an object around a balanced position. A part or the whole of an object is deformed by a force, and the deformed part has the force to return to its original state (restoring force, or deformation potential energy).
For example, the elastic force of a solid and the surface tension of a liquid can be used as a restoring force, and there can also be an external restoring force, such as the tension of a string or membrane. After the applied force disappears, the restoring force causes the deformed object to move to the equilibrium position, and the deformation potential energy is gradually converted into kinetic energy.
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Anonymous users2024-02-11By tensioning and plucking a string or rubber band, a cotton thread or rubber band can be used to make sound.
Tapping the wine glass with a small hammer will make it sound.
When you blow air into the cap, it makes a sound because the air column vibrates.
What they have in common when they make sound is that the object is vibrating, so the sound is produced by the vibration of the object.
So the answer is: tension and pluck the string or rubber band, hit it with a small hammer, blow into the cap, there is an object vibrating, the object vibrates
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Anonymous users2024-02-10The sound needs to vibrate, and the vibration cannot vibrate in the direction of stretching due to excessive tension.
Sound occurs due to the vibration of the object, and the object does not vibrate when it does not make a sound. The rubber band vibrates when it makes a sound; The vibration stops, the vocalization stops. This is a common phenomenon in life, and it can be answered according to life experience.
But it is important to grasp the reasons for sound, because this is the basis for learning acoustics well.
Influencing factors. The direction of the surface tension is tangent to the liquid surface and perpendicular to the dividing line between any two parts of the liquid surface. Surface tension is only related to the nature and temperature of the liquid.
In general, the higher the temperature, the lower the surface tension. In addition, impurities can also significantly change the surface tension of the liquid, for example, clean water has a large surface tension, while water stained with soap has a smaller surface tension, that is, the surface of clean water has a greater tendency to shrink.
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Anonymous users2024-02-09Sound occurs due to the vibration of the object, and the object does not vibrate when it does not make a sound.
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Anonymous users2024-02-08The rubber band is vibrating.
Experiments have shown that sound is produced by the vibration of objects.
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Anonymous users2024-02-07Hello friends, in the case of the same force, it is related to the toughness of the rubber band. The tougher the rubber band, the more elastic it has after deformation, the vibration frequency is high, and the tone it emits is sharp, and it sounds high. Of course, within the elastic limit, it is also related to the magnitude of the force, and it is directly proportional.
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Anonymous users2024-02-06Fix the two ends of the rubber band, pull it out with your hand to make it sound, make the distance between the fixed points at both ends farther away, make the rubber band tighter, pull it with your hand, and feel the change in sound. Conclusion: The tighter the rubber band, the higher the pitch.
A rubber band is a short loop made of rubber and latex, usually used to tie things together, and was invented by Stephen Perry on March 17, 1845. At the same time, it has been modified to be used for women's hair ties.
The scientific name of rubber band is latex ring and latex tape. It is made by dipping latex by impregnation. It has elongation.
It has the characteristics of large, good resilience, low price and easy to use. Its manufacturing process includes impregnation, vulcanization, demoulding, cutting rings (strips) and other processes. It is mainly used for bundling items.
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Anonymous users2024-02-05Its vibration amplitude has changed, and when the rubber band is toggled with great force, the sound is strong and the vibration amplitude is large.
Amplitude refers to the maximum possible value of the physical quantity of vibration, usually expressed as a. It is a physical quantity that indicates the range and intensity of vibration.
In mechanical vibration, the amplitude is the absolute value of the maximum displacement of the object from the equilibrium position when it vibrates, and the amplitude is numerically equal to the magnitude of the maximum displacement. Amplitude is a scalar quantity, and the unit is expressed in meters or centimeters. Amplitude describes the magnitude of the vibration amplitude of an object and the intensity of the vibration.
Amplitude modulation
Also known as amplitude modulation, amplitude modulation, AM (amplitude modulation) refers to a modulation method that makes the amplitude of the carrier change according to the change law of the desired transmitted signal, but the frequency remains unchanged. Amplitude modulation is widely used in cable or radio communications and broadcasting. Generally, a higher frequency signal is used at the modulation end, and its vibration amplitude changes as a function of the modulation signal, and then countermodulated at the demodulation end.
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Anonymous users2024-02-04By tensioning and plucking a string or rubber band, a cotton thread or rubber band can be used to make sound. Tapping the wine glass with a small hammer will make it sound. When you blow air into the cap, it makes a sound because the air column vibrates. What they have in common when they make sound is that the object is vibrating, so the sound is produced by the vibration of the object. So the answer is: tension and pluck the string or rubber band, hit it with a small hammer, blow into the cap, there is an object vibrating, the object vibrates
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