in a reaction between iron and oxygen the reaction slowed down when there was more rust than either iron or oxygen which of the following caused this reaction to slow down

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

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.