Final answer:
The potential near the surface of a pure copper sphere with a given radius is zero, as the sphere has a charge of zero.
Step-by-step explanation:
The potential near the surface of a charged sphere can be calculated using the formula:
V = k * q / r
where V is the potential, k is the Coulomb's constant (9 × 10^9 N m^2/C^2), q is the charge on the sphere, and r is the distance from the center of the sphere to the point where the potential is being calculated.
For the given copper sphere, we need to convert the radius from inches to meters:
0.939 inches = 0.939 * 0.0254 meters = 0.0238896 meters
Since the sphere is pure copper, it has a charge of zero, so the potential near its surface is also zero.