Amechanical wave must have a while an electromagnetic wave does not have to require a

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

(1 point) match the differential equations and their vector valued function solutions. you may wish to multiply at least one solution out fully, to make sure that you know how to do it. you can get the other answers quickly by process of elimination and just multiply out one row element.

Which governments provide garbage collection services to homes and businesses