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course Phy 121
6/10 about 6:00
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You will participate during the semester in two series of collaborative lab activities.
The first is designed to be relatively painless, and to begin to develop a degree of teamwork and collaboration.
These activities are designed for teams of four individuals, each with a specific function:
• The designer will come up with the idea for the activity and will specify for other team members how the activity is to be conducted.
• The experimenter will follow the designer's instructions to set up the experiment and collect data.
• The analyzer will analyze the data.
• The interpreter will describe what the results mean.
For each series of activities, you will participate in four different investigations, one as designer, another as experimenter, another as analyzer and another as interpreter.
As each investigation progresses, you will follow the work of your fellow team members.
Please summarize the above, as best you can, in your own words:
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This semester there will be two series of collaborative labs. These teams will include four individuals each with a specific job. The designer is to come up with the idea for a project, the experimenter is to execute the experiment and gather data, the analyzer is to analyze the data and the interpreter will describe the results and what they mean. During each series every individual in the group will be a designer, an experimenter, an analyzer, and an interpreter.
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The first series of activities will be spread out over the first half of the semester, the second series over the second half of the semester.
The first series will be based on systems you have seen in the Key Systems videos.
You will begin by describing at least three ideas for investigations related to the Key Systems videos. Valid ideas will ultimately be developed proposals, each of which will describe a question that could be investigated and tested using simple materials such as those seen in the videos. You will eventually develop three proposals, one of which will be chosen for an investigation. You will be the designer for that investigation.
At this point we're just beginning to explore ideas for the first series of investigations. Your instructor will work with you to further develop your ideas, and perhaps to explore other related possibilities.
Right now you don't have a wide variety of experimental techniques available to you, so this first series of investigations will be relatively simple.
List below three ideas for things you think might be fairly easy to test, based on the systems you have seen so far.
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-How does friction between the surface of an incline and the object rolling on it affect the velocity?
-How does mass affect the pendulum’s period?
- How does the shape of cylinder affect its flow?
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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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-The effect of friction between the surface of an incline and the object rolling on it.
-This could be tested by first rolling the object down the incline itself and then place sandpapers of various grits on the incline to create more friction.
-The items required for this experiment are an incline, sandpapers of various grits, an object to roll down the incline, and a timer.
-You would test this idea by timing the various trials of the object rolling down the incline on both the incline itself and the sandpapers of various grits. Upon doing this you would take the given times to find the average velocity of the object and compare them to each trial seeing how the sandpaper effected the velocity.
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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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-How does mass affect a pendulum’s period?
-This idea would be tested by creating pendulums with the same length, but varying masses.
-The items needed for this experiment are string, objects with varying weights, and a timer.
-This idea would be tested by timing the various pendulum weights for 1 minute and seeing how that affects their periods.
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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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-How does the shape of cylinder affect its flow?
-This experiment could be tested by having various shapes of cylinders, all holding the same volume and analyzing the amount of time it takes for the water to empty once the water is released through the hole.
- The items you would need for this experiment are various shaped cylinders holding the same volume, timer, and water.
-This experiment would be tested by filling the various containers with the same volume and timing how long each of them takes to empty once the water is released through the hole.
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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?
1 hour
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Self-critique (if necessary):
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Self-critique rating:
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Very good.
We'll be organizing these collaborative projects soon.
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