Yes. It is the long OO (long U) sound. It is usually pronounced (skool).
No, the word "flute" does not have a long u sound. It is pronounced with a long "u" sound followed by a "t" sound.
It has a long "u" sound.
In huge the U is long. It has the OO sound of a long U (although it has a HYOO sound) with the near rhymes luge and scrooge.
Yes, the word "bug" has a short U sound, not a long U sound.
Yes, the word "universe" starts with a long U sound.
No, unicorn does not start with a short U sound. It starts with a long U sound.
The YOO sound in "use" is a long U (long OO) sound. It sounds like (yooz).
Yes. It has the long OO sound as in loop and soup.
Yes, the word "tulip" has a long 'u' sound, as in "too- lip."
Yes, the word "spoon" has a short U sound, not a long U sound.
Yes, it is a long OO or YOO (U) sound.
The U sound in "rule" is a long vowel sound.