Asmall model of a pump is tested in the laboratory and found to have a specific speed, nsd, equal to 1000 when operating at peak efficiency. predict the discharge of a larger, geometrically similar pump operating at peak efficiency at a speed of 1800 rpm across an actual head rise of 200 feet.

Answer(b) 60 miles per hour;

Iwould say earthquakes.

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.