in a triple beam balance how do you know when you have to move a weight back to the previous notches or grooves

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of