How could you reduce the force needed to do work with a lever? Make it longer
Make it shorter
Move the fulcrum toward the effort arm
Move the fulcrum away from the effort arm

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?