Show for a simple square lattice (two dimensions) that the kinetic energy of a free electron at a corner of the first zone is higher than that of an clcctron at midpoint of a side face of the zone by a factor of 2.

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr