How do you calculate pump and related electromotor?

Could someone help me with following:

Assuming that you have aL/s chilled water flow delivered to a header locatedm away. Consider4m difference in height, using copper pipe type K.

1. What is the recommended pipe size;

2. What is recommended pressure drop m/m;

3. What is the total pressure drop in kPa;

4. What is the electromotor power requirement in kW assuming (3phase-volt);

Support your respond with graphs and equations included the source/reference.