A paddle wheel frictionally adds thermal energy to an ideal monatomic gas in a s

Question

A paddle wheel frictionally adds thermal energy to an ideal monatomic gas in a sealed, insulated container. The paddle wheel is driven by a cord connected to a falling object as shown in the figure. In this experiment, a 5.0-kg object falls through a total distance of 3.0 m and the temperature of the gas is found to increase by 6 degrees Celcius. Assume that all of the mechanical energy lost by the falling object goes into the gas. How many moles of gas must be present in this container? PLEASE SHOW ALL OF THE WORK!!! #

Explanation / Answer

the mechanical energy is converted to thermal energy .......mgh=nCvdelta T ....5*9.81*3=n*(3/2)Rdelta T ..........for monoatomic gas Cv=3/2 *RT.........n=1.996 moles

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.