Auniform, infinitely long line of c tance l above and parallel to a grounded conducting plane. let the grounded plane be z 0 and the line of charge be z l and y 0. a. derive an expression for the potential in the region above the plane. b. derive an expression for the charge density ơ(x, y) on the conducting plane arge, with charge per unit length à, is a dis-

Atank holds 1000 gallons of water, which drains from the bottom of the tank in half an hour. the values in the table show the volume v of water remaining in the tank (in gallons) after t minutes. t(min) 5 10 15 20 25 30v(gal) 694 444 250 111 28 0(a) if p is the point (15, 250) on the graph of v, find the slopes of the secant lines pq when q is the point on the graph with t = 5, 10, 20, 25, and 30.(b) estimate the slope of the tangent line at p by averaging the slopes of two secant lines.(c) use a graph of the function to estimate the slope of the tangent line at p. (this slope represents the rate at which the water is flowing from the tank after 15 minutes.)show all steps.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Name three populations commonly found in a prairie system