Harry potter is chasing his nemesis draco malfoy during a quidditch match. initially, harry is 35m behind draco, who has just spotted the golden snitch hovering 75m away at the edge of the playing field. draco flies at a constant speed of 40 m/s straight towards the golden snitch. if harry is originally flying at 50 m/s, what acceleration does he need to reach the snitch 175 m ahead of draco? how fast will harry be moving when he passes draco?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

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

How many neutrons does plutonium -196 with an atomic number of 78.