A window washer is descending from the top of a skyscraper at a constant velocity of 0.5 m/s. He realizes he forgot his keys and asks his friend to drop them from the roof. He catches them at time t. Which of the following graphs shows the position of the keys as a function of time?

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

Which describes increasing the efficiency of energy resource

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion