The Ancient Hebrews were not known for mechanical devices, and none survive to this day.
If you are asking which letters are not in the Ancient Hebrew alphabet, there are none. The Ancient Hebrew alphabet is identical to the Modern Hebrew alphabet.
Ryan is ראין in both ancient Hebrew and Modern Hebrew.
הצלחה (hatzlacha) This word is the same in both Ancient Hebrew and Modern Hebrew.
It's the same in both Ancient Hebrew and Modern Hebrew: ספר החיים (Sefer ha-Chayim)
'Bee' = 'Dvora' (דבורה) This word is the same in both ancient Hebrew and modern Hebrew.
The Aztecs were a part of the ancient society. Currently, this ancient culture has no effect on modern day society.
Lots of people wrote in Hebrew. Almost all literate material from Ancient and Modern Israel are in Hebrew.
Nothing different than any other children, ancient or modern.
I am David = shmee dah-VEED (שמי דוד)(it's the same in both Ancient Hebrew and Modern Hebrew, only in Modern Hebrew, the name david is more likely to be stressed on the first syllable).
"yahoo" has no meaning in Hebrew, except as a suffix in names (-yahu), in which case it means God."ed" (עד) is the Hebrew word for witness (it's the same word in both Modern Hebrew and Ancient Hebrew.
Only in Modern Hebrew. The word is tsulav (צולב) which literally means "crossed". Ancient Hebrew has no such concept.
If Elie Wiesel studied Hebrew, it would have been both Ancient Hebrew and Modern Hebrew.