How are ac and dc generators different?

in ac generators, commutators produce alternating current.

in ac generators, no commutators or slip rings are used.

in dc generators, slip rings produce direct current.

in dc generators, commutators produce direct current.

How do you tell if someone actually cares about you? and just say they do?

Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?