Yes, You pump from one pump into a second to get a greater pressure boost. Be sure that the pumps and lines can handle the pressure increase.
Between a 500-gallon-per-minute pump and a 2,000-gallon-per-minute pump.
It is not a simple machine.Simple machines are levers, inclined planes, wheel and axle, screws, wedge, and pulley.I water pump uses air pressure and suction.
You measure the distance from the surface that mounts to the block to the hub where the pulley mounts. Short=5 5/8" Long=7"
Yes you can. If it is waste sullage water from your house it has be identified so people don't drink the water.