Week 3: Sept. 15 - 22, 2009           Name____________________________
Environmental Physics        [You might attach this sheet to the front of your homework]
Ben Brabson

Readings for this week:
     Tues. 9/15     MH&C Ch. 4.1-4.5        Energy efficiencies & thermodynamics
     Thurs. 9/17    MH&C Ch 4.6-4.9,11.1 Real engines and the 2nd Law of Thermo.
     Tues. 9/22     MH&C Ch 5.1-5.4        Heat transport (advection, conduction...)

Homework 3: Due next Tuesday, September 22
       Chapter 4  E4.3, E4.5, E4.7, P4.9, P4.11, P4.16, P4.17

       Special Problem 1: Sketch the approximate behavior of an ideal gas on a p-V diagram for the following processes:
               (a.) V = constant (Isochoric process.)
               (b.) p = constant (Isobaric process.)
               (c.) dT = 0 (Isothermal process.)
               (d.) dQ = 0 (Adiabatic process.) [The major point of this exercise is to notice the difference between (c.) and (d.)]

       Special Problem 2: One mole of an ideal monatomic gas is taken around a closed cycle.  Process 1 --> 2 is at constant volume. Process 2 --> 3 is adiabatic. Process 3 --> 1 is at constant pressure. Determine numerical values for the heat dQ, the change in internal energy dU, and the work done W for each of the three processes and for the cycle as a whole.

News and Events
1.)  4:00 p.m., Wednesday, Sept. 16, 2009 Physics Colloquium, in Swain Hall West 119, Sima Setayeshgar, IU, Physical Principles Underlying Biochemical Signaling Networks
2.) 4:00 pm, Monday, Setember 28, 2009, Geology Colloquium, in GY143, Phil Stevens, SPEA IU, Oh where, oh where is OH? Measuring the elusive hydroxyl radical in the atmosphere.
3.) 4:00 pm, Friday, Sept. 18, 2009, Geography Colloquium, in SB150, Grace Muriuki, U of Queensland, AU, Human migration, squatters, and land-cover change in the Chyulu Hills, Kenya.