I argued with my sister just because of a simple physics question?

Question

look, i told my sister that if you compare 2 glasses, one with more water and the other with less water, the glass with more water would produce a higher pitch, but she debated with me and said the glass with less water would produce a higher pitch. what nonsense. if anyone would be kind enough to give me some proof.

Answer 1

The "proof" would be easily demonstratable. We call this an "experiment." Fill two glasses up with different amounts of water, and listen for yourself.

The answer, as you will soon learn, is that what is vibrating is the glass (not the water.) It works like your vocal chords--the longer the vibating chord, the deeper (lower) the sound. The longer the glass "chord" is (the less water in the glass) the deeper (lower) the pitch. Men (who are typically taller) have longer vocal chords than women--therefore men's voices are usually deeper (lower) than women's.

Remember, you are measuring the amount of "GLASS" (which is what is vibrating) not the amount of water (which acts as a bridge against the glass.)

But the "proof" comes only by the "experiment." Try it! This is an easily repeatable experiment.

(You win.) She was thinking that the water is what makes the sound--it isn't the water; it is the glass.

Answer 2

The glass with more water will make a higher pitch,
The glass when tapped will resonate at is harmonic frequency, when the environment changes so will the frequency.
more water in the glass, means less distance between the top and water, causing a shorter wavelength, or shorter path for the vibration to travel, before reaching a change in density (water), since the water cannot absorb all the energy it gets reflected back quicker than the glass with less water.
Try this, get a pop bottle with half water, blow over the top, like a flute, now vary the water, more water higher pitch, less water lower pitch.
Please note, hold the bottle upright, and do not squeeze, as the odd shaped bottle will not be able to resonate an no sound is produced.

Answer 3

You got conflcting answers and in their ways, they all are right.

The glass with more water will have a higher pitch if you use it as an air column by putting a vibrating tuning fork over its mouth. Since a smaller air column is present, its pitch will be higher.

If you are talking of tapping the glass, try an experiment and tell me what you find.

Answer 4

I think the less-water glass would produce a higher pitch. And if you really don't know, just try it out, dumb ***.

Answer 5

You are right. Draw a sound diagram and you will see that the frequency is higher with more water in the glass.

Answer 6

you are correct. I have a habit of blowing accross the top of my coke bottle while I am enjoying my coke. In the beginning the pitch is very high but by the end it is very low. Here are some links that confirm the same behavior.

Answer 7

Small air spaces vibrate more rapidly than large air spaces. When there is little air in the glass, you produce a high note. When there is more air, the note is lower.

Answer 8

No. there is relatively an estimate as to while it will be too late. as quickly as the earth's CO2 stages attain a undeniable quantity, the wear and tear would be irreversible and our society will slowly visit pot because of consequence of worldwide warming. it extremely is why we are so desirous to help end the issue.

Answer 9

your thinking nonsense