The article "a" can be either, depending on the pronunciation.
The A (ay) is a long vowel, while the sound (ah) is a short vowel.
The alternate article "an" has a short vowel sound.
The 'e' in 'when' has a short vowel sound.
Long A sound
It has a short vowel sound
The I in the word diner has a long I sound.
No, "can" does not have a long vowel sound. The vowel 'a' in "can" is pronounced with a short vowel sound.
It is a short vowel word. The I has a short I sound.
The word "glad" has a short vowel sound.
The word "am" has a short A vowel sound, as in apple.
The word "tap" has a short A vowel sound.
The A in "had" has a short A vowel sound as in have, has, and bad.
"Ruby" has a long u sound (long vowel), while "Spanish" has a short a sound (short vowel).
That is a short vowel.