Constants part a wo charged dust particles exert a force of 7.5x102 n n each other what will be the force if they are moved so they are only one-eighth as far apart? express your answer using two significant figures.

With i really need the correct answer!

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=