Calculate the pressure 500m below the surface of water. Density of water is 1000kg/m^3. Take g=100m/s^2.

Applicate the formula:

p = ρ*g*d

Data:

p = Pressure = ¿?

ρ = Density = 1000 kg/m³

g = Gravity = 9,81 m/s²

d = Distance = 500 m

Replacing:

p = 1000 kg/m³ * 9,81 m/s²  *500 m

p = 4905000 Pa

The pressure at that deep is 4905000 Pa.

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.