Yes, the O in whose is a long vowel.
The O in lose has a long U (long OO) vowel sound, as in whose. The E is silent.
Rayon has a long vowel sound.
Long
No, "can" does not have a long vowel sound. The vowel 'a' in "can" is pronounced with a short vowel sound.
"Shake" has a long vowel sound. The "a" in "shake" is pronounced as "ay," making it a long vowel.
The O in lose has a long U (long OO) vowel sound, as in whose. The E is silent.
The animal is the sheep (long E vowel sound).
It has one long vowel (E) and one schwa sound.
It is a long U. Some long U's are "yoo" (cute, fuel) and some are "oo" (dune, flute). So-called "long" vowels A, I, E. O, and U "say their names" in English, and there is no English vowel whose name is Oo. "Broad" U might be a better term for the vowel in ruler, meaning a rounded back vowel with the tongue down.
It has a long vowel sound.
Rayon has a long vowel sound.
Long
No, "can" does not have a long vowel sound. The vowel 'a' in "can" is pronounced with a short vowel sound.
It has a long vowel sound.
"Shake" has a long vowel sound. The "a" in "shake" is pronounced as "ay," making it a long vowel.
No, "plain" does not have a long vowel sound. The vowel "a" in "plain" is pronounced as a short vowel sound.
Loser long or short vowel