18.Write a short story about a
group of friends who must work together to
overcome friction in three different situations.
Be sure to identify the kind of friction involved
in each situation.

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c