Ilya and anya each can run at a speed of 8.90mph and walk at a speed of 3.80mph . they set off together on a route of length 5.00miles. anya walks half of the distance and runs the other half, while ilya walks half of the time and runs the other half.
a)how long does it take anya to cover the distance of 5.00miles ?
express your answer numerically, in minutes.
b)find anya's average speed.
express anya's average speed save, anya numerically, in miles per hour
c)how long does it take ilya to cover the distance?
express the time tilya taken by ilya numerically, in minutes.
d)now find ilya's average speed.
express ilya's average speed save, ilya numerically, in miles per hour

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