@oristarA,
No, 'learn-ed', as in your first example is an adjective.
Learned - as in your second sentence- is a verb.
They are pronounced differently - the adjective is pronounced with two syllables and the verb 'learned' is pronounced with one.
You can also spell the past tense of the verb 'learn' - 'learnt- and it is pronounced as spelled- or 'spelt'.