1. I wish to ask you for some good examples of those adjectives that are hyphenated when in front of nouns but are not hyphenated when placed after verbs. Can you add the rationale too? 

2. Can I use countable nouns and uncountable nouns after the phrases "what kind of" and "what kinds of"? If yes, can you give some examples for each noun, uncountable noun and countable noun, and give me the rationale behind them if possible? Thank you. Sorry if I am being clear with the questioning.

What kind of apple do you like?  (Is this a good sentence?)

What kinds of apples do you like?  (Is this a good sentence?) 

1.  She is a full-time student. She attends school full time. 

He ran the 100-meter dash. He ran 100 meters in ten seconds.

It was a high-calorie dessert. The desset was high in calories.

2. The first one says I like only one kind of apple, and the second says I like more than one type.

What kinds of emotions did you feel when you learned that you were going to have a baby? (Although I'd be more likely to say "What emotions..." emotion is an example of something is an uncountable noun in some cases.)