The first movement of a symphony is characterized by a fast tempo and the use of sonata-allegro form, reflecting a serious and substantive mood. This movement typically sets the thematic material for the entire symphony. Therefore, the answer to the question is the first movement. ;
In 30 seconds, an electric device with a current of 15.0 A allows approximately 2.81 x 10^21 electrons to flow through it. This is calculated by determining the total charge and then dividing by the charge of a single electron. The formulas used include the relationship between current, charge, and time, and the charge of an electron.
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