Suppose we have two negative charges, one located at the origin and carrying charge −9e, and the other located on the positive x-axis at a distance d from the first one and carrying charge −36e. Determine the location, polarity and magnitude of a third charge whose placement would bring the entire system into equilibrium.

To design a steam turbine to produce 12,000 hp power. a engineer comsiders using a steady state stean low st 1160fr and engineer considers using a steady state steam flow at 1160°r and 450 psia to drive this steam turbine. the exhaust of the steam is cooled by the lake (vacuum). heat losing to the surroundings is measured at a rate of 555.55 btu/s. (a) sketch the system with the given conditions. (b) neglecting kinetic and potential energy changes from inlet to exit, determine the volumetric flow rate of the steam at the inlet, (ft'/hr). must clearly show unit conversions at crtical terms.