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Unformatted text preview: Quiz 2b Name: Date: Phys224 Spring 2010 Dr. P. Hanlet Concept (3 points each) 1. Each hydrogen gas molecule, H 2 , at room temperature has, on average, how much energy? (a) 1 2 kT (b) 1 kT (c) 3 2 kT (d) 2 kT (e) 5 2 kT (f) 3 kT 2. The plot below shows the Mawxwell distribution of gases for air at T =300 K . Consider the average ave, most probable mp, and root-mean-squared rms velocities v ave , v mp , and v rms , respectively. The 3 dashed lines correspond to these velocities, but are labelled: v 1 , v 2 , and v 3 . 0.025 0.05 0.075 0.1 0.125 0.15 0.175 0.2 0.225 x 10-2 200 400 600 800 1000 1200 v (m/s) P(v) v 1 v 2 v 3 What are the correct labels for v 1 , v 2 , and v 3 , in this order? (a) v mp v ave v rms (b) v mp v rms v ave (c) v ave v mp v rms (d) v ave v rms v mp (e) v rms v mp v ave (f) v rms v ave v mp 1 Problem (5 pts) Show your work!!! If I can read it, I will give you partial credit!!! Correct answers without work will NOT get full credit....
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This note was uploaded on 05/01/2010 for the course PHYS 224 taught by Professor Hanlet during the Spring '10 term at Illinois Tech.
- Spring '10