If the charge density increases linearly with distance from the origin such that

Question

If the charge density increases linearly with distance from the origin such that rho v = 0 at the origin and rho v = 4 C/m at R = 2 m, find the corresponding variation of D.

Explanation / Answer

follow this to get answer The circumference of a circle is directly proportional to its diameter? A circle whose circumference is 25.770 feet has a corresponding diameter of 8.203 feet. Find the circumference of the circle whose diameter 15 feet (round to nearest tenth) 25.770 / 8.203 = x/15 ---> x = (15)(25.77/8.203) ---> x = 47.1 = circumference of the second circle B)the area of a triangle varies jointly as the length of its base & the length of its height. If a triangle has an area of 123.75 m2 when its base is 24.75m & its height 10 m, then find the area of the triangle whose base is 12m & its height is 40m? 123.75/[(24.75)(10)] = area/[12)(40)] ---> Area =(12)(40)(123.75) / [(24.75)(10)] = 240m^2 C)the density of an object is the quotient of its mass & volume..D=M/V. The appropriate mass of the sun is 1.988 x 10^30 kg. It appropriate volume is 3.377 X 10^17 cubic miles. Compute the density of the sun & write it in scientific notation. Density = Mass/Volume = (1.988 x 10^30) / (3.377 x 10^17) = 0.5887 x 10^930-17) = 0.5887 x 10^13

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