I believe it is Convection, then again I'm not in college.
Answer:
a=2.304×10¹⁶m/s²
Explanation:
Given data
Distance d=2.5 nm=2,5×10⁻⁹m
Mass of proton m=1.6×10⁻²⁷kg
charge of proton q=1.6×10⁻¹⁹C
To find
acceleration a
Solution
Apply the Coulombs Law

Where k is coulombs constant (k=9×10⁹Nm²/C²)
q=q₁=q₂
r=d
So
You should write meter per second square for the acceleration in words