I have attached the problem. I know I need to apply the energy equation: P1/(gamma1)+V1^2/(2*g)+Z1=P2/(gamma2)+V2^2/(2*g)+Z2+h_t+h_f-h_p+h_m P=pressure V=velocity g=gravity Z=elevation h_t=head due to turbine h_p=head due to pump The above 2 are 0 since there's no turbine and pump in this problem h_t=headloss h_m=minor losses due to bends, valves, etc... So I must solve for h_t. This has me confused, isn't h_t=f*L*2*g/d? where f=friction factor (obtained from mood's chart) L=length d=diameter I don't understand why we are given K values if we don't use them, unless I can't apply the equation h_t=f*L*2*g/d?