An empty cylinder glass ABCD with mass m, height H with inferior base s and exterior base S. We fill completely the glass with water then we close the surface AD with our hand so that we could put the glass upside down on a tank of water. The glass float with height h submerged in the water. Find the force applied by the operator on the glass to maintain the equilibrium: a. By the balance of pressing force
b. By the theorem of Achimades​

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.

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.