Someone please help me with this

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

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?

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring