The magnitude e of an electric field depends on the radial distance r according to e = a/r4, where a is a constant with unit volt-cubic meter. as a multiple of a, what is the magnitude of the electric potential difference between r1 = 1.71 m and r2 = 2.89 m?

Explanation:

Electric field in a given region is given by equation

as we know the relation between electric field and potential difference is given as

so here we have

here we know that

 and

so we will have

so we will have

33: i think it’s b

the force required to move the cart is divided by three or 33.33 n.