(easy)+(25 points) what is the net force acting on the object (represented by the solid circle) in this diagram?

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!