Question 5Joey is holding a party balloon filled with helium, and the helium has the same temperature80°F and pressure 0.95 atm as the air outside. The balloon is approximately spherical withdiameter roughly 20 cm. Throughout the day, the air outside slowly drops to 60°F but itspressure remains the same, and therefore so does the pressure inside the balloon whose sizenaturally adjusts so that the pressure inside and outside are very nearly the same. What is thechange (in Joules) in thermal energy of the air in the balloon?

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Answered: Joey is holding a party balloon filled…

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