Which of the following describes the mechanical advantage of a machine?

a. the number of times that a machine multiplies the effort force

b. the number of times a machine multiplies the resistance force

c. the number of times a machine reduces the resistance force

d. the number of times a machine reduces the effort force

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.