Please explain in detail and clearly. Thank you! Gauss' Law Practice Problems1. Suppose there is a planet that has a uniformly massively charged Iron core with averagecharge density p, = 100 MC/m3 (MC=MegaCoulombs) and radius 10 km and outerradius 20 km. Note: You may want to use variables to solve the problem out at first andthen only put in numbers at the end. E.g. the 10 km radius = R and the outer radius = 2R.a. Find the average charge density such that the planet generates no external electricfield outside of the planet.b. Plot the Electric field a function of distance from the center out to 30 km.

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