The milky way is often considered to be an intermediately wound, barred spiral, which would be type according to hubble. the milky way is often considered to be an intermediately wound, barred spiral, which would be type according to hubble.

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?