Write code that creates processes that form a tree as follows: the main process is the root of the tree and has 2 child process; only one of the children of the main process has 2 children of its own, with the other having no child processes; the first child process has two child processes. These are all the processes created by this code. Make each process print its own process id and that of its parent.

Answer me pls is an algorithm that has been coded into something that can be run by a machine.

Pp 4.1 design and implement a class called sphere that contains instance data that represents the sphere’s diameter. define the sphere constructor to accept and initialize the diameter and include getter and setter methods for the diameter. include methods that calculate and return the volume and surface area of the sphere (see pp 3.5 for the formulas). include a tostring method that returns a one-line description of the sphere. create a driver class called multisphere, whose main method instantiates and updates several sphere objects.

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.