The force on an object is given by the equation F= ma. In this equation, Fis the force, mis the mass, and a is the acceleration. What is the force on an
object that has a mass of 540 kg and an acceleration of 2.3 m/s2?
A. 1242 N
B. 542.3 N
C. 234.8 N
D. 1,925,000 N

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?