Copy of Lab06_Tutorials and Magnetism

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Lab06: Tutorials and Magnetism Student #1: Alejandro Martinez Student #2: Aryan Dixit Instructions: Read and print out this document prior to attending lab. Follow along with the instructions and answer the questions using complete sentences. Hand in one document per lab group at the end of the lab period. Note: you must be present to gain credit for the lab. 1) Magnetic Domains: A. Using Chrome, go to the link and read through this tutorial carefully: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/magn etic-domains/ B. Why aren’t you magnetic? The tutorial explains that only four elements—iron, nickel, cobalt, and gadolinium—are ferromagnetic at room temperature and capable of becoming permanent magnets. Humans, although containing some iron in their blood, are not composed predominantly of these elements, which is why they cannot become permanent magnets. C. What is a magnetic domain? A magnetic domain refers to a cluster of atoms within ferromagnetic materials, where electrons share the same magnetic alignment. Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 1 of 6

D. Play around with the applet by moving the magnet closer to and further away from the ferromagnetic material. Place the green slider in the middle of the position range. Hit “Reset”. Now place the green slider to the far left of the position range. Hit “Reset”. What similarities do you observe for these two magnet positions? What differences do you observe between these two magnet positions? Explain your reasoning. When the slider is in the middle the applet gets attracted by the front and middle arrows but the back ones stay the same. When the magnet is closer we can see that the similarity is still there of the front and middle arrows changing its direction towards the magnet but now some of the back ones are attracted too. This is simply because there is a stronger pull of area from the back arrows. E. Suppose you were able to switch the magnet’s orientation and have its north pole (rather than its south pole) pointing toward the ferromagnetic material. If you moved the north pole near the ferromagnetic material, how would your applet observations change? If the magnet's orientation were reversed, the arrows on the ferromagnetic material would align to the left rather than the right, reflecting the change in the direction of the magnetic field lines. Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 2 of 6

Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 3 of 6

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2) Compasses in Magnetic Fields: A. Go to the link and read through this tutorial carefully: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/comp asses-in-magnetic-fields/ B. What happens when you move the horseshoe magnet near the compass? The blue arrow attracts more towards the magnet when the horseshoe is pulled closer. The white arrow faces the other direction. C. Which end of the compass needle is its north pole? How can you tell? a. The blue arrow is because it’s the one that attracts to the magnet. Also if you hide the magnet the blue arrow naturally points north. D. Drag the magnet so that it sits near the end of the compass labeled “S”. What happens when you click “Hide Magnet”? Why? a. The arrows rotate 180 degrees. This happens because the north pole is attracted the magnet and is pointing south but once there is no attraction it goes back to it’s default positon. Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 4 of 6

Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 5 of 6

3) Mass Spectrometer: A. Go to the link and read through this tutorial carefully: https://nationalmaglab.org/magnet-academy/watch-play/interactive-tutorials/mass -spectrometer-single-sector/ B. Turn the tutorial speed to slow and the magnetic field to the weakest setting. What kind of ions are detected with the weakest setting? What happens to the other ions? Be specific. The lightest ions, characterized by their blue color, are successfully detected. In contrast, the heavier ions – green and red – will deviate towards the inner or outer walls of the tunnel, failing to reach the connected ion detector. C. Keep the tutorial speed at slow but change the magnetic field to its medium setting. What kind of ions are detected with the medium setting? What happens to the other ions? Be specific. The detection is successful for the blue-colored ions, which are the lightest. However, the heavier ions, identified as green and red, will stray to the tunnel's inner or outer walls, thus not making it to the ion detector that's attached. D. Keep the tutorial speed at slow but change the magnetic field to its strongest setting. What kind of ions are detected with the strongest setting? What happens to the other ions? Be specific. The heaviest ions, distinguished by their red color, are successfully detected. On the other hand, the lighter green and blue ions deviate and collide with either the inner or outer walls of the tunnel, preventing them from reaching the attached ion detector. Lab06: Tutorials and Magnetism PHYS 171: Computational Lab for Electricity and Motion C. Love, Drexel University; edited by R. Kratzer, Drexel University Page 6 of 6

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