Which do solar flares and coronal mass ejections have in common?

Which is not true about oxygen-17 and oxygen-18?

Which notation is used to represent an alpha particle? a. b. c. d.

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils