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When you tap a glass with a little water in it It has a high pitch when you tap a glass with water filled to the top it has a low pitch why does this happen?
Wiki User
∙ 14y ago
Glass has a natural frequency at which it vibrates, known as its resonant frequency. If you put energy into the substance at its resonant frequency, you will force it to vibrate or resonate (resonance is a forced vibration). So, tapping imparts energy to the glass molecules and causes them to resonate. This motion sets up a wave of vibration traveling through the glass. The vibrating glass causes air molecules to vibrate similarly. The vibrating air molecules are the sound wave that you hear (the frequency or pitch of the sound wave is the same as the resonant frequency of the glass). As the resonant wave moves through the glass, it moves the water molecules with it, creating a wave of water that you can see near the edge of the glass. The dragging water molecules effectively increase the mass (both the water and the glass molecules) and reduce the energy of the wave traveling through the glass. When the energy is reduced, so is the frequency of the wave in the glass, which is reflected in the pitch of the sound wave that you hear.
In simpler terms, when you tap a glass with a lot of water in it, there are fewer vibrations because they have more trouble traveling through the higher mass. Thus, the lower pitch.
Wiki User
∙ 14y ago
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What is pitch controlled by?
It can be controlled by many things, but here are at least three: Length of the vocal cords. Thickness of the vocal cords. And stress on the vocal cords. That of course, it is the human body. If your talking about, say, a guitar amp, it's controlled by the little nob that says 'pitch' on it. -- J
What property describes how HIGH or LOW a sound seems to a person?
pitch
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pitch corresponds directly with frequency, so as frequency increases, so does pitch.
Why Vibrate and pitch are connected because why?
the more the vibration, the lower the pitch.
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The pitch period of a signal is the fundamental period of the signal, or in other words, the time interval on which the signal repeats itself. The pitch frequency is the inverse of the pitch period, which is the fundamental frequency of the signal.
When glass cups are filled with water and tapped with a fork what causes the sound?
Any glass of appropriate manufacture (wine glasses are a favorite) will make sound when struck, because the walls of the glass vibrate. Glasses are often filled with water, whether a small amount or nearly to the top, because it limits the part of the glass walls that vibrates, raising the pitch the more water is present. This is the concept behind the Glass Harmonica (normally implemented with multiple water glasses and tuned with water.) Ben Franklyn invented the Glass Armonica by mounting nested, tuned bowls of glass on a spindle so they rotated. If the glass is clean, then wet fingers rubbed around the rim will cause them to make a very tonal pitch. The rotation in the Armonica reduced the need for the player to rub around the rim, allowing it to be used for chordal music appropriate to Franklyn's time.
Glass full of water makes high pitch or low pitch?
Lower sound
Does the liquid in a glass effect the pitch of the note when a person rubs the rim of the glass?
Yes, the ringing is caused by vibrations. The pitch is determined by the frequency (measured in hertz) which is how fast the waves alternate up and down. The water blocks the vibrations making them need to travel less up and down the glass, which makes the pitch higher.
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Diabolical Pitch happened in 2012.
Has anyone broken a glass with a high enough pitch?
Yes. The pitch doesn't necessarily need to be that high, it just needs to be the resonant frequency of the glass, and very, very loud.
When did Fever Pitch Soccer happen?
Fever Pitch Soccer happened in 1995.
Can glass really break when you scream?
yes.if you make the right pitch
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You must pitch the ball in 12 seconds in pro and little baseball. If the batter doesn't come, then you just have to pitch it.
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4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material 4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material
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The aphotic zone is the portion of a lake or ocean where there is little or no sunlight. This means the place is almost pitch black! These zones are often filled with myriad species humans have never seen before.
An example of is when a long high pitch causes a crystal glass to begin to vibrate and then break?
resonance
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When this happen, There is no relief from a ball embedded in a bunker.
