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Physics 21 Online
OpenStudy (anonymous):

A mechanical wave moves through a medium, which can be

OpenStudy (chmvijay):

where are the options ?

OpenStudy (anonymous):

a solid a liquid a gas all of the above

OpenStudy (anonymous):

@chmvijay

OpenStudy (jfraser):

can sound move through air? can sound move through water? can the sound of someone knocking on a door travel through the door to the other side?

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