Ahorizontal aluminum rod 3.3 cm in diameter projects 7.0 cm from a wall. a 1000 kg object is suspended from the end of the rod. the shear modulus of aluminum is 3.0·1010 n/m2. neglecting the rod's mass, find (a) the shear stress on the rod and (b) the vertical deflection of the end of the rod.

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.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?