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Please explain Balls (4) 14 points) Pat and Kody are playing around in lab and d

ID: 1399727 • Letter: P

Question

Please explain Balls (4) 14 points) Pat and Kody are playing around in lab and do the following experiment on wo uncharged metal spheres on insulating stands, X and Y, that are in contact with each other. A positively charged rod R is used. O INITIAL PREPERATION: A positively charged rod R is touched to the electroscope causing the leaves to separate (shown to the right). Casing (ii) EXPERIMENT: Stenli A positively charged rod R is brought close to X as shown in the figure to Step I: A positively charged rod R is brought close to X as shown in the figure to the right. Step 2: Sphere Y is now moved away fronk as shown in the figure to the right. Step 3; Sphere Y is touched to the electroscope which has been set up as described above. Two students make predictions to discuss the predicted results: Kodv: The leaves will get farther apart. This is because the rod in steps 1 and 2 will cause both spheres x and y to become negatively charged due to polarization. When you touch sphere y to the electroscope, which is positively charged already, the negative charges from sphere y will cancel some of the positive charges on the electroscope. Pat: You are wrong - the leaves get closer together. Spheres x and y are originally neutral and evern when you bring the rod close they stay neutral. When you pull sphere y away it doesn't have any charge and is still neutral. However it is a conductor. So when you touch it to the electroscope some of the positive charge on it moves to sphere y. Thus the leaves move closer together Do you agree with Pat, Kody, both, or neither? Briefly explain your reasoning.

Explanation / Answer

Kody is absolutely right because due to polarization both the sphere will become negatively charged due to which the Y will move towards positively charged rod as the rod will attract the Y and as X is negatively charged so Y will move opposite to the X due to repulsion