Two closed systems (of same dimensions) A and B comprise each NA and NB harmonic oscillators, respectively. Initially, the temperature of system A is bigger than the temperature of system B. The two systems are then brought into contact through one of their walls, which is diathermic, to form a composed system (also closed). a) Find the multiplicity function for the composed system as a function of energy and number of harmonic oscillators. b) Find the Entropy for the composed system (Entro

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?