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- | ==== Project: Design a Defib ==== | + | ===== Project: Design a Defib ===== |
- | The Artemis 13 is on it's way back to Earth and currently is hanging in lower Earth orbit. You and a team of scientists have been desperately re-wiring the spacecraft circuitry to get home. While soldering wires, your android co-pilot Johnny 5 begins to malfunction, | + | |
- | You run to the medical bay and grab the defibrillator and rush back to Johnny 5. When you go to charge | + | ==== Kick Off Questions ==== |
+ | - What is a switch in a circuit? How does a switch work? | ||
+ | - Draw the circuit diagram for charging a capacitor. Draw the circuit diagram for discharging | ||
+ | - What is a capacitor? How does a capacitor | ||
- | You run to the limited "stock room" on board, only to discover limited supplies. You manage | + | ==== Main Problem ==== |
+ | Your team was able to shut down the hawkion accelerator before it could blow itself up, and possibly take Lakeview with it. But the beam dump that absorbed the hawkions is now highly radioactive. | ||
- | The defibrillator must be able to deliver 360 J to Johnny 5 in order to stabilize him. Can you fix the instrument | + | Solomon Tobb, the ingenious intern, suggests the project I.A.N. could be the answer. |
- | The paper sheets are 0.5 m wide, 2 m in length, and vary in thickness (2 mm, 1 mm, 500 $\mu$m, 50 $\mu$m, 1 $\mu$m, 0.5 $\mu$m). The aluminum sheets are 0.80 m in length, 0.5 m wide, and 0.3 mm in thickness. The defibrillator | + | Melissa Lewis, the accelerator director, mentions that in a [[https:// |
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+ | There' | ||
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+ | The paper sheets are 0.5 m wide, 2 m in length, and vary in thickness (2 mm, 1 mm, 500 μm, 50 μm, 1 μm, 0.5 μm). The aluminum sheets are 0.80 m in length, 0.5 m wide, and 0.3 mm in thickness. The stock room also has a high voltage power supply of 30 kV. Your device must be able to deliver a rapid jolt of 360 J to I.A.N. in order to restart him. Can you put something together to get him working and save the day? | ||
<WRAP info> | <WRAP info> | ||
- | === Learning Goals/Conceptual Questions | + | === Learning Goals === |
- | - Explain why you would want to use a capacitor for a defibrillator? | + | |
- Explain how a capacitor charges and discharges. | - Explain how a capacitor charges and discharges. | ||
- | - Explain why you would add a resistor to charging/ | ||
- | - Draw the circuit diagram for charging the capacitor. Draw the circuit diagram for discharging the capacitor. Can you draw a single circuit diagram for both charging and discharging using a switch? Where is Johnny 5 in the circuit? | ||
- Draw V vs t, Q vs t, and I vs t graphs for both charging and discharging circuits. | - Draw V vs t, Q vs t, and I vs t graphs for both charging and discharging circuits. | ||
- | - Explain what the difference is between a capacitor that is " | ||
- Calculate the dimensions/ | - Calculate the dimensions/ | ||
- Summarize equations that we know for both resistors and now capacitors. | - Summarize equations that we know for both resistors and now capacitors. | ||
- Explain what changes about your capacitor when you have a dielectric | - Explain what changes about your capacitor when you have a dielectric | ||
</ | </ | ||
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+ | ==== Wrap Up Questions ==== | ||
+ | - Explain why you would want to use a capacitor for a defibrillator? | ||
+ | - Explain why you would add a resistor to charging/ | ||
+ | - How do defibrillators work in real life? Would this actually work as a defibrillator? | ||
+ | - How does a dielectric work? Should dielectrics be insulators or conductors? Why? | ||
+ | - What is the the difference is between a capacitor that is " | ||
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