20% 2. at night, water is pumped from a treatment plant reservoir through distribution piping to an elevated storage tank. the water surface in the supply reservoir is at 10-ft elevation; the lift-pump elevation is 20 ft; the water level in the elevated tank is at 140 ft elevation. the pipe network may be considered equivalent to 5000 ft of 10-in diameter cast-iron pipe (c = 100). calculate the pump discharge pressure needed to supply a flow of 1000 gals/min to the tank.

audio tape

explanation:

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.