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phy121
Your 'collaborative labs' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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You have completed the first series of collaborative labs.
In that series you developed some important skills with teamwork, collaboration and communication. By now you have also developed additional lab techniques and insights, as well as an expanded understanding of physics and the standard formulations of motion, energy, momentum, forces and other topics.
You now have a good idea of the function of each member of the team, the designer, the experimenter, the analyzer and the interpreter.
You are also familiar with the items in your lab materials package.
The second series of activities will be spread out over the remainder of the semester. The investigations in this series will be more substantial and extensive than those of the first series, though we will limit the scope to keep the workload reasonable.
Please give a brief statement of three proposals for the second series of investigations, relevant to the topics of the labs you have performed and/or the material covered so far in the course. It should be possible to conduct your proposed investigations using the materials in the lab package, and/or common items you can expect your team members to have.
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Idea 1:. The relationship between the angle of an incline and the distance a ball rolling off it will go.
Idea 2: determine if the pendulum hitting the wall and the washer hitting the ground is relative to the distance between them to the ground and how far out you hold the pendulum
Idea 3: with a series of rubber bands linked together, determine how the amount of resistance placed on them affects how a pulse travels through them.
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Discuss your first idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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This experiment would determine the relationship of the angle of incline and the distance any type of ball rolling off of it will go. The angle determines the slope, and the slope determines V0. To be tested, you need an incline, a protractor to measure the angle, and a pencil or carbon paper to mark where the ball lands. To test it, do several trials of rolling a ball off of an incline, with the incline adjusted to various angles. The data would help determine the relationship.
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Discuss your second idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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Multiple trial measurements of the distances between the pendulum to the wall and the ground. Two washers a string and a measuring device
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Discuss your third idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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If you have a series of rubber bands chained together, how does the resistance they are placed under affect how well a pulse travels through the rubber bands? You could test this by attaching several rubber bands together and stretch to different lengths putting resistance on the bands. Then you could pull the rubber bands out on one side and let it go to send a pulse through the rubber bands. You could time how long the pulse takes to go from one side to the other and back. You could also see how the waves of the pulse changes with resistance change.
For this you would need rubber bands. Something to attach the rubber bands and a ruler.
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Your instructor is trying to gauge the typical time spent by students on these activities. Please answer the following question as accurately as you can, understanding that your answer will be used only for the stated purpose and has no bearing on your grades:
• Approximately how long did it take you to complete this activity?
30 minutes
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Very good ideas.
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