Question

The Stern-Zartman Experiment verified Maxwell-Boltzmann speed distribution. In one version of the experiment, a beam of silver atoms emerges from the nozzle and enters the rotating glass cylinder (diameter: 1m) through a single slot as shown. The atoms travel along the cylinder’s diameter, while the cylinder rotates counter-clockwise at 100 rev/s. As result the atoms are deposited on the side wall of the cylinder forming a silver layer. After experiment is concluded the cylinder is removed from vacuum system and the thickness of the silver atoms deposit is evaluated. It turns out that the deposit is the thickest at the point exactly 90o with respect to the main beam axis. (Main axis is defined by the beam direction). Use this information to find the temperature of the silver gas in the beam. (Molar mass of the silver is 108g.) A) 767K B) 985K C) 1040K D) 1258K E) none of the above Why is the answer C?

Answer 1