What does the negative sign in f = –kx mean?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called

This is the substance(s) formed in a chemical reaction.