A magician wants to use magnets to create a new illusion for her show. She hides strong magnets in her shoes and inside a special rug on the stage. When she tests the illusion, she
finds that her shoes stick to the rug. What will happen if she flips the poles of the magnets
in each of her shoes?

Which notation is used to represent an alpha particle? a. b. c. d.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0