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All lab work should be completed in your course notebook and be recorded on the right side of the open notebook. If you come to the end of the page, you must of course turn the page over and continue writing on the back of the page on the right side of the page of the open notebook. Any accompanying sheets must be taped, glued, stapled or somehow attached to the lab notebook; scotch tape is always available in the room.

Scoring Rubrics for each lab are available online. These will also be distributed in class a couple days prior to notebook collection. View:

Scoring Rubrics for Unit 5 Labs (check back later)



Lab FM1:  Action at a Distance

Question: 
What are the three types of charge interactions?

Purpose: 
To describe the three types of charge interactions and then to use a negatively charged balloon to determine the type of charge on the top triangle tape and the bottom rectangle tape.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include observations of the interaction between paper and tape, two tapes charged in like manner, and the top triangle tape and the bottom rectangle tape, and both tapes and a negatively charged balloon.  The Conclusion/Discussion should describe the three types of charge interactions; it should also state the charge on the two types of tape and describe the supporting evidence and logic which leads to such a conclusion.





Lab FM2: Sticky Tape Experiments


Question:
How does the variety of materials rank in terms of their relative affinity for electrons?

Purpose:
To charge a variety of materials by rubbing them together and to examine their interactions with a positive, negative and neutral object in order to rank the materials according to their relative affinity for electrons.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results. The Data section should include the provided table.  The Conclusion/Discussion section should provide a ranking of the materials according to their relative affinity for electrons.  Evidence for the ranking should be discussed. Any suspicious or inconsistent results should be discussed.





Lab FM3: Charging by Induction

Question:
What type of charge is acquired by an aluminum pie plate when charged by induction with a positively- and a negatively-charged object?

Purpose:
To determine the type of charge an aluminum pie plate acquires charged by induction using a positively- and a negatively-charged object.

A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results.  The Data section should include a diagram which shows with sufficient detail the two methods which were used to charge the aluminum pie plate by induction.  The tests used to identify the resulting charges are also represented in the diagram. The Conclusion answers the question posed in the Purpose of the lab.  The Discussion of Results explains in words the evidence which supports the conclusions.





Lab FM4: Electric Field Simulation

Question:
What variables do and do not effect the strength of the electric field intensity at a given location surrounding a source of charge?

Purpose:
To identify the variables which do and do not effect the strength of the electric field intensity at a given location surrounding a source of charge.

A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion and a Discussion of Results.  The Data section reveals a table of data which reveal a systematic approach to experimentation with the three possible variables and the resulting value of the electric field strength.  Conclusion responds (as always) to the question posed in the Purpose.  The Discussion of Results should describes specific data which serve as supporting evidence for the conclusion.






Lab FM5: Electric Field Lines

Question:
What is the nature of the electric field line pattern in the space surrounding a positive charge, a negative charge and a configuration of two or more charges?

Purpose:
To describe the nature of the electric field line pattern in the space surrounding a positive charge, a negative charge and a configuration of two or more charges.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include several diagrams depicting the electric field line patterns for a positive charge, a negative charge, a configuration of two identically and two oppositely charged objects, and two other multi-charge configurations. The diagrams should include arrowheads on the electric field lines and contain a sufficient number of lines to provide a feel for the pattern.  The Conclusion/Discussion should identify the general principles that characterize all the patterns.





Lab FM6: Coulomb’s Law

Question:
How many electrons are transferred from a balloon when rubbed 10 times with animal fur?

Purpose:
To use Coulomb's law and vector principles to determine the number of electrons which are transferred to a balloon as the result of 10 average-strength rubs on animal fur.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion.  The Data section should include a diagram of the experimental setup with measured variables clearly identified.  A systematic collection of calculations should be shown.  Work should be labeled clearly and the logic behind each step should be briefly annotated. The Conclusion should (as always) respond to the question raised in the Purpose.






Lab FM7: The Great Mass Attraction Simulation

Question:
What is the effect of varying separation distance, object mass and planet mass upon the gravitational force of attraction between an object and a planet?

Purpose:
To determine the effect of separation distance, object mass and planet mass upon the gravitational force of attraction between an object and a planet.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include the provided diagram, data table and accompanying questions. The Conclusion/Discussion should include a thorough discussion of the answer to the question posed in the Purpose of the lab;  the discussion should include both qualitative and quantitative information about the relationships.







Lab FM8: Satellite Motion Simulation

Question:
How do the magnitude and direction of the velocity and net force vector for a perfectly circular orbit of a satellite compare to that for an elliptical orbit of a satellite?

Purpose:
To compare and contrast the magnitude and direction of the velocity and the net force for a perfectly circular orbit of a satellite to the elliptical orbit of a satellite.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include the provided sheet. The Conclusion/Discussion should include a comparison of the two types of orbital motion - circular and elliptical. Attention should be given to how the magnitude of the v and Fnet vectors change (or don't change) during the orbit and their direction relative to each other.






Lab FM9: Jupiter's Moons

Question:
Does Kepler’s law of harmonies apply to satellites other than Sun-orbiting satellites?  Do they apply to Jupiter’s moons?

Purpose:
To determine if Kepler's third law of motion applies to Jupiter's moons and to describe the evidence that supports such a conclusion.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results.  The Data section should include the provided sheet.  At least one sample calculation should be shown. The Conclusion/Discussion should answer the question posed in the Purpose and describe the manner in which the evidence supports the conclusion that is made.





Lab FM10: Massing a Planet

Question:
What is the mass of Saturn?

Purpose:
To use period-radius data for the moons of Saturn in order to determine the mass of Saturn.

A complete lab write-up includes a Title, a Purpose, a Data section, and a Conclusion/Discussion of Results. The Data section should include the provided sheet.  At least one sample calculation should be shown; treatment of the units and conversions to kg should be clear. The Conclusion/Discussion should answer the question posed in the Purpose and describe the manner in which the evidence supports the conclusion that is made.





Lab FM11: The Mini-Drop Lab

Question:
Consider an object free-falling from rest and eventually stopping upon contact with the ground.  How does the value of the contact force compare to the object’s weight at the various phases during its fall?

Purpose:
To compare the value of the contact force exerted upon an object (for a 1-kg object free-falling from rest to the ground and eventually stopping) to the object’s weight and to use Newton’s laws to explain the relative magnitude.

A complete lab write-up includes a Title, a Purpose, a Data section, a Conclusion/Discussion of Results.  The Data section should include an organized listing of the contact force for at least three phases of the motion - when at rest (just prior to falling), during the falling motion, and during the stopping motion.  The Conclusion/Discussion should describe how the contact force value compares to the weight and explicitly use Newton’s laws to explain why it is equal to, less than and greater than the weight.




 





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