Aclosed, rectangular container is separated into two compartments by a moveable, adiabatic, impermeable wall of area a. this internal wall is vertical, and it is con- nected to the left (fixed) wall of the container by a stretched rubber band. the left compartment is filled with n moles of carbon dioxide (co2) gas at temperature t and the right compartment is empty. the carbon dioxide gas may be assumed to be ideal. find the pressure and volume of this gas. note the temperature dependence of your results.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?