Aball is tied to a string and whirled in a horizontal circle at a constant 4 revolutions per second. categorize the following according to whether they are 0 in value, constant in value, or change:

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

In an experiment, how can i change human errors? be specific.

What structural formula represents 4 electrons shared between two atoms?