a metal wire carries a current of 100 ma. how long does it take for 2 x 1020 electrons to pass a given cross-section of the wire?

3.2 s

32 s

320 s

200 s

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.

Which wave is the result of amplification and produces a louder sound