Question

when glass and copper pieces heated to the same temperature are touched,the copper piece seems warmer than the glass piece.explain why.

Answer 1

Copper is a very good conductor of heat. So it allows maximum amount of heat to pass through it from one point to other. But glass is a poor conductor of heat and hence it allows a very little amount of heat to pas through it. 
When we touch a heated copper piece and glass, more heat is transferred to out hand from copper than glass. So copper seems warmer.

Answer 2

When glass and copper pieces are heated to the same temperature are touched , the copper piece seems warmer then the glass piece. This is because copper benig one of the best of heat allows maximum heat to pass through it and glass being a bad conductor doen not aloow much heat to pass through ehich makes copper pieces warmer than glass pieces.