For a non-inverting amplifier if R1= ∞ ohm, then the gain of the amplifier is: (a) Zero
(b) -1
(c) +1
(d) Infinite

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing