Are human beings made up of atoms and molecules and why

Which feature indicates that mars resides in the inner region of the solar system

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.