A block of mass 2kg is moving along the x-axis under the influence of a force whose x-component varies as shown in the graph. The particle is at rest when it is at the origin. Determine the work done by the force as the block moves… a) …from x=0 to x= 4m b) …from x=0 to x=8m Find the speed of the block … c) …at x= 4m. d) …at x= 8m.

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.

If a refrigerator is a heat pump that follows the first law of thermodynamics, how much heat was removed from food inside of the refrigerator if it released 380j of energy to the room?

Which is an advantage of subdividing science into different areas?