what is meant by sound
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Explanation:
vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
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ɪɴ ᴘʜʏsɪᴄs, sᴏᴜɴᴅ ɪs ᴀ ᴠɪʙʀᴀᴛɪᴏɴ ᴛʜᴀᴛ ᴘʀᴏᴘᴀɢᴀᴛᴇs ᴀs ᴀɴ ᴀᴄᴏᴜsᴛɪᴄ ᴡᴀᴠᴇ, ᴛʜʀᴏᴜɢʜ ᴀ ᴛʀᴀɴsᴍɪssɪᴏɴ ᴍᴇᴅɪᴜᴍ sᴜᴄʜ ᴀs ᴀ ɢᴀs, ʟɪϙᴜɪᴅ ᴏʀ sᴏʟɪᴅ. ɪɴ ʜᴜᴍᴀɴ ᴘʜʏsɪᴏʟᴏɢʏ ᴀɴᴅ ᴘsʏᴄʜᴏʟᴏɢʏ, sᴏᴜɴᴅ ɪs ᴛʜᴇ ʀᴇᴄᴇᴘᴛɪᴏɴ ᴏғ sᴜᴄʜ ᴡᴀᴠᴇs ᴀɴᴅ ᴛʜᴇɪʀ ᴘᴇʀᴄᴇᴘᴛɪᴏɴ ʙʏ ᴛʜᴇ ʙʀᴀɪɴ. ... sᴏᴜɴᴅ ᴡᴀᴠᴇs ʙᴇʟᴏᴡ 20 ʜᴢ ᴀʀᴇ ᴋɴᴏᴡɴ ᴀs ɪɴғʀᴀsᴏᴜɴᴅ
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