When the mother finds the distance l from the previous part it turns out to be greater than lend, the distance from the pivot to the end of the seesaw. hence, even with the child of weight w at the very end of the seesaw the twins exert more torque than the heavier child does. the mother now elects to balance the seesaw by pushing sideways on an ornament (the circle above the center) that is a height h above the pivot. with what force in the rightwards direction, fx, should the mother push? note that if you think the force exerted by the mother should be toward the left, your final answer fx should be negative.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.