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What type of education is needed to be an environmental engineer? Physics An infinite cylinder with radius A has a radially dependent charge density of p(R) BR? With a multiverse, is there a flat version of Earth for the flat Earthers and spherical versions for the sphere lovers creating a win/win? (a) If A is the area of a circle with radius r and the circle expands as time passes, find dA/dt
in terms of dr/dt.? Write and solve a quadratic equation that has phi as a zero?