Physics, asked by Anonymous, 11 months ago

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ʟɪɢʜᴛ ᴇɴᴛᴇʀs ғʀᴏᴍ ᴀɪʀ ᴛᴏ ɢʟᴀss ʜᴀᴠɪɴɢ ʀᴇғʀᴀᴄᴛɪᴠᴇ ɪɴᴅᴇx 1.5. ᴡʜᴀᴛ ɪs ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ᴛʜᴇ ʟɪɢʜᴛ ɪɴ ᴛʜᴇ ɢʟᴀss? (sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ ɪɴ ᴠᴀᴄᴜᴜᴍ ɪs 3×10^8 ᴍs-1 )

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