A student does an activity where he puts a ringing phone in the glass tumbler. The student covers the glass tumbler with his hand. The student removes air from the glass tumbler by using a vacuum and observes the sound of the phone fainting gradually. What can be concluded from the observation?. Single choice.
(1 Point)
a) sound eventually fades away
(b) sound gets absorbed by the surrounding
(c) sound requires a medium to travel
(d) sound get reflected in all directions
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Sound needs a medium to travel. Mark as brainliest!!!!!
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