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Astronomy: Are the Van Allen belts, the Ionosphere, and the Heaviside layer all different names for the same thing? In an isosceles triangle, each base angle has half the measure of the vertex angle. Find the measure of each bass angle.? What element loses electron when solid magnesium reacts with liquid bromine? How can i factorise y^1/2 - x^1/2? 1.4 eV electron has a 10-4 probability of tunneling through a 2.5 eV barrier.What is the prob a 1.4 eV proton going through the same barrier?