Acceleration usually has the symbol a. it is a vector. what is the correct way
to write the symbol to show that it is a vector?
a. â
b. a
c. a
d. ā
?

Answerthe force between the charges will be  f/9 (one-ninth of force f)explanationcoulomb's law relates the magnitudes  two point charges q₁ and q₂, the distance, r, between the charges, and the electrostatic force, f, between the two charges:     k represents coulomb's constant, k = 8.99×10⁹ n·m²/c².note that if we have r = 3r, then   

Ray 2 should cross through the focal point on the right side of the lens.