i need the pink highlighted tick marks only Part 2- (Mini) Railgun A railgun is
ID: 2304396 • Letter: I
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i need the pink highlighted tick marks only
Part 2- (Mini) Railgun A railgun is a gun that uses a couple of conducting rails to accelerate a metal projectile Conventional firearms use burning or exploding chemicals to create expanding clouds of gas that can push a projectile. They're limited by how fast gases can expand; no amount of gunpowder can get past that limit. Railguns are purely electromagnetic (no chemicals needed) and extremely flexible. They can shoot small projectiles extremely quickly. They may also be usable in launching larger objects like spacecraft. Since faculty get in trouble when students get hurt/killed in class, we're going to be making a very small, weak railgun. Set-up instructions: 1. Let's start with some rails. Take two strips of aluminum foil. Stretch the foil tight across the table and attach it with tape. Try to get it as flat as you can without using so much tape that it will never come off again. Leave about 1-2 cm of space between the rails 2. Now we need a projectile. Take the small bar and put one of the small magnets on either end of it. The orientation matters; that is, it matters whether the magnets ha their poles aligned (north to south) or anti-aligned (north to north). We'll leave it to you to discover which way works and why 3. Connect the power supply to the rails. Turn the current knobs all the way the voltage to about 7 V. Our goal is to deliver as much current as possible without up and the power supply's safety circuit getting tripped. If the current drops to zero, you'll need to turn the power supply off and then on again to reset it.Explanation / Answer
1) Here, magnets are used to increase the magnetic field, thus increasing the force on the projectile, because the force without the extra magnets would not be strong enough to propel the projectile.
2) The polarity of the magnets has to be facing opposite directions. This is quite obvious, there would be a repulsion between the like poles and to make a stable system, i.e., we want the magnets to stay at the ends of the bar, so magnets must have their poles aligned (north to south).
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