Molecular Physics | Thermodynamics Answers

Dry air near sea level has the following composition by volume: N2, 78.02 %; O2, 20.94 %; Ar, 0.93%; and CO2, 0.05 %. The atmospheric pressure is 1.00 atm. Calculate the partial pressure of each gas in atm. PN2 = ? atm PO2=? atm PAr= ?atm PCO2= ?atm

By how much does the density of air increase when it is compressed to half its volume?

When we blow air from a small mouth opening we feel cold air while when we blow the air from a big mouth opening we fell hot air.

Two layers of cloth of equal thickness provide warmer covering than a single layer of cloth of dounle thickness. Why?

what is the temperature of a vaccum?explain.

Each of three identical bodies has a temperature-independent heat capacity C. The three bodies have initial temperatures T3>T2>T1. What is the maximum amount of work that can be extracted leaving the three bodies at a common final temperature?

Assuming that the working gas is a simple ideal gas (with temperature independent heat capacities), show that the engine efficiency of the Brayton cycle is given by: E=1-(Pa/Pb)^((Cp-Cv)/Cp)

if length 'L',force 'F' and time 'T' are taken as fundamental quantities.What would the dimensional equation of mass and density?

why people can walk on red-hot coals and dont get burnt?

If a tank fills between 5 and 6 millions bottles of water per day for 358 days/year and facility burned 928,226 gallons of diesel fuel in 2007 alone. Calculate the (ml) of diesel used up per bottle, stating any assumptions you make.