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Solve the all parts of given question:
Question: The actual diameter of an atom is about a tenth of a nanometer (10-10 m). In order to develop some intuition for the molecular scale of a gas, assume that you are considering a liter of air (mostly N2 and O2) at room temperature and a pressure of one atmosphere 105 Pa. Put all your answers in the answer box, labeling each one by its letter and putting a blank line between each answer.
Part A: Calculate the number of molecules in the sample of gas.
Part B: Estimate the average spacing between the molecules.
Part C: Estimate the average speed of a molecule using the relation between the KE of a molecule and the temperature.
Part D: Suppose that the gas were rescaled upwards so that each atom was the size of a tennis ball. What would be the average spacing between molecules?
I am having a hard time understanding these questions. So if you answer please explain how you found the answers.
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
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