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Students who wish to complete an independent lab project for Module 2 are encouraged to explore any aspect of mechanics that catches their interest and imagination. The project does not have to be a direct application of material that is presented in class; there is an unending variety of phenomena to be explored and studied. We will assist you in identifying doable projects and we can guide you to resources that may suggest interesting topics for study. There are two lists below. The first is a compilation of ideas that is based, at least partly, on the 107 curriculum presently being studied; as such, these projects were not appropriate for Module 1. The second list is a set of projects selected from the Module 1 list-these are projects that continue to be appropriate throughout the semester. Our experience teaching the last module suggests that we be a bit more flexible with allocating lab time for the projects. Some projects require a full four weeks of work to complete, others are likely to be completed in less than four weeks. This allows for the possibility of students completing a short project (two or three weeks long) and completing a reduced number of exercises during Module 2. We will negotiate the project/exercise balance on a case-by-case basis. New Project Ideas 1. Superposition and sound quality: Ever wonder why the same note played by two different instruments sounds different? This "quality" of sound is referred to as "timbre" and is intimately related to the brain's perception of tone. Simple software can analyze the frequencies present in a sound, and the presence of multiple harmonics of the same fundamental can be correlated to the timbre of the note. Playing multiple turning forks at the same time and simultaneously analyzing the "frequency spectrum" can give insight into how our brains process sound.

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key words: eel, Lake Constance, assessments, size ratio, tot,al mortality Samples of approximately 11,000 eels were used to analyse the size class composition of the eel stock in Lake Constance (Bodensee). The main statistical approach was to separate a 'stock dependent fraction' within the length frequency distributions obtained from three different traps and two electrofishing methods.From the calculated size class proportions an average total mortality of 28.5 yo was estimated for eels bigger than 50 cm opposed to 26 yo total mortality for the unfished part of the population.

Brnc, R. E. 1979. External morphology of the pink salmon, Oncorhynchus gorbuscha, intro' duced into Lake Superior. J. Fish. Res. Board Can. 36: 1283-1287.Meristic and morphometric measurements were taken from 33 male and 44 female mature pink salmon, Oncorhynchus gorbuscha, collected in three Lake Superior tributaries in Marquette -ounty, Michigan. Significant sexual differences were found for eight characteristics in males and two in females. The male fish had a greater degree of differentiation in the head and hump regions; females had larger and longer anal fins. The Lake Superior fish were found to have shorter bodies, larger and longer fins, and more exaggerated development in the male head and hump than has been reported for the Pacific populations.

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Demonstration of the speed of sound in air is a classic component of the general physics curriculum. This demonstration uses a sine wave from an audio oscillator and the same signal picked up by a movable microphone to produce Lissajous figures and determine the speed of sound.