Three objects are attached to a massless rigid rod that has an axis of rotation as shown. assuming all of the mass of each object is located at the point shown for each, calculate the moment of inertia of this system.

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th