Suppose that the magnitude of the charge on the yellow sphere is determined to be 2q. calculate the charge qred on the red sphere. express your answer in terms of q, d1, d2, and θ.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.