Amonatomic ideal gas that is initially at a pressure of 1.50 * 105 pa and has a volume of 0.08 m3 is compressed adiabatically to a volume of 0.0400 m3 . (a) what is the final pressure? (b) how much work is done by the gas? (c) what is the ratio of the final temperature of the gas to its initial temperature? is the gas heated or cooled by this compression

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?