If the mass of a material is 45 grams and the volume of the material is 11 cm^3, what would the density of the material be? answer units

From negative to negative

The answer is 4f======since electrostatic force is given by    we let f be the electrostatic force when  r = 1 m    if we let  denote the electrostatic force when the distance is decreased so that r = 0.5m, then    we established earlier that f = kq₁q₂. therefore    the force will now be 4f.