Aspace on a server where users can interact with one another as if in a physical room is called a
a. blog.
b. mailing list.
c. chat room.
d. newsgroup.

the answer is d. splog

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.