What force could you put on a 2-kg see-saw to cause a torque of 200 N-m when applied straight down, 2 meters away from
the center fulcrum?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air