A70 percent efficient pump delivers water at 20°c from one reservoir to another 20 ft higher. the piping system consists of 60 ft. of galvanized-iron 2-in pipe, a reentrant entrance, two screwed 90° long-radius elbows, a screw open gate valve, and a sharp what is the input power required in horsepower for a flow rate of 0.4 ft/s.

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more

Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"

Answer the same molecular formula;

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -