The cake is sweet. 6. The paint is wet.

Here are the sentences with the adjectives placed before the nouns:

5. The cake is sweet.

   • Adjective: sweet
   • Noun: cake
   • Answer: The sweet cake.

6. The paint is wet.

   • Adjective: wet
   • Noun: paint
   • Answer: The wet paint.

Here are the rephrased noun phrases: 5. $\boxed{\text{The \textbf{sweet} cake}}$ 6. $\boxed{\text{The \textbf{wet} paint}}$