In an experiment, a ringing bell is placed in a vacuum jar that does not have any air in it. What best describes why the bell is seen vibrating but not heard? Light waves have high frequencies and are able to pass through the vacuum jar, but the frequencies of sound waves are too low to vibrate a vacuum. Light waves travel faster than sound waves, so they are able to travel through the vacuum jar, but sound waves do not have enough energy to vibrate glass. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present. Light is a longitudinal wave that is able to pass through the vacuum jar, but sound is a transverse wave that has to move perpendicular to air.

Question

Larry Frank

Physics

12 September, 12:34

In an experiment, a ringing bell is placed in a vacuum jar that does not have any air in it. What best describes why the bell is seen vibrating but not heard? Light waves have high frequencies and are able to pass through the vacuum jar, but the frequencies of sound waves are too low to vibrate a vacuum. Light waves travel faster than sound waves, so they are able to travel through the vacuum jar, but sound waves do not have enough energy to vibrate glass. Light does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present. Light is a longitudinal wave that is able to pass through the vacuum jar, but sound is a transverse wave that has to move perpendicular to air.

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Lincoln · Answer 1

I believe the correct answer from the choices listed above is the third option. The bell is seen vibrating but not heard because l ight does not need a medium to travel through, but since sound waves must have a medium to vibrate, sound is not created where no air is present. Hope this answers the question. Have a nice day.