A computer hard disk 8.0 cm in diameter is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 500 rad/s2 for 12s, then coasts at a steady angular velocity for another 12s.

Afiling system in which an intermediary source of reference, such as a file card, must be consulted to locate specific files is called a(n) system. a. shelf filing b. direct filing c. indirect filing d. shingling