Consider the boltzmann-gibbs principle, also known as the fundamental principle or postulate of statistical mechanics.
a) state that principle for a system that is classically described.
b) state that principle for a system that is quantumly described.
in both cases, be careful to mention the system conditions in which the principle is considered valid

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Which sound characteristic is not affected by the relative motion of an object

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.