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- | ==== Project: EM-Boar Tiger Cub ==== | + | ===== Project: EM-Boartiger |
- | Dr. McPaddel woke up to a great surprise this morning when she walked outside to admire the junkyard and noticed a mysterious glowing creature stuck to her magnetic crane. Apparently, in all the excitement of showing the contraption to her neighbors, she had forgotten to turn off the machine. The creature had wandered into the scrapyard overnight looking for some metal to eat, and when it wandered near the crane, the metal became magnetized and pulled the creature up into the air, where it remained stuck until Dr. McPaddel discovered it this morning. She alerted the authorities, | + | |
- | By the time you learn of all this, the creature | + | ==== Kick Off Questions ==== |
+ | - What is the right hand rule for the magnetic field from a current-carrying wire? What is the right hand rule for the magnetic force on a current-carrying wire? | ||
+ | | ||
+ | - Way back from Physics 1 - how does velocity relate | ||
- | You decide to construct makeshift launcher that is using magnetic force to launch projectiles so that they will leave the launcher at a speed of $300m/s$. You must construct your launcher on the floor of the laboratory and position it at an angle of 63 degrees so that it is firing out of the window of the laboratory. | + | ==== Main Problem ==== |
- | At your disposal to construct your launcher, you have access to two copper rails that can be cut to your specifications. You also have perspex that you can cut to any dimensions and chunks of aluminum that can be cut to any shape. | + | With the power line rebuilding underway, Director Lewis calls. |
+ | |||
+ | By the time you learn of all this, the creature is already at the research facility. You arrive and the scientists fill you in - the creature has large tusks like a boar but striped fur like a tiger' | ||
+ | |||
+ | Just then, the herd of EM-boartigers arrive and organize to attack the lab. Surprisingly, | ||
+ | |||
+ | You decide to construct makeshift launcher that usies magnetic force to launch projectiles so that they will leave the launcher at a speed of $300 \;{\rm m/s}$. You must construct your launcher on the floor of the laboratory and position it at an angle of 63 degrees so that it is firing out of the window of the laboratory. | ||
+ | |||
+ | At your disposal to construct your launcher, you have access to two copper rails that can be cut to your specifications. You also have perspex that you can cut to any dimensions and chunks of aluminum that can be cut to any shape. | ||
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- | Conceptual questions: | + | ==== Wrap Up Questions ==== |
- In this scenario, you used the F = integral I dL x B equation. In particular, what current/ | - In this scenario, you used the F = integral I dL x B equation. In particular, what current/ | ||
- There are a couple key assumptions you need to make about the B-field in this problem. What assumptions did you need? Why did you need them? How realistic are those assumptions? | - There are a couple key assumptions you need to make about the B-field in this problem. What assumptions did you need? Why did you need them? How realistic are those assumptions? | ||
- | - What sort of right hand rules did you use in this problem? Why did you need two different ones? | ||
- What steps did you take to solve this problem? | - What steps did you take to solve this problem? | ||
- What size of current did you end up finding for the problem? Is it big/ | - What size of current did you end up finding for the problem? Is it big/ | ||
- Make a summary of the equations that we've talked about in class so far (field & force for point charges & currents). What is similar about the equations? What is different about the equations? When are each of the equations applicable? | - Make a summary of the equations that we've talked about in class so far (field & force for point charges & currents). What is similar about the equations? What is different about the equations? When are each of the equations applicable? | ||