Calculate the pump output in gpm if the motor rpms are 1125 against 25 feet of TDH, the MHP is 30 and the overall efficiency is \( 65 \% \).

If a 4000 g of solution of salt water contains 40 g of \( \$ \mathrm{salt} \) what is its mass percent

A current intensity of 2.6 Amperes were passed for 9.65 hours through the solution of copper (ii) sulphate. Calculate the mass of copper deposited. ( \( \mathrm{Cu}=63.5,1 \mathrm{~F}=96500 \) coulomb).

3. For \( i=\sqrt{-1} \), which of the following is equivalent to \( \frac{2 i-3}{i-5} \) ?

\( \operatorname{Lim}_{x \rightarrow 2} \frac{h(x)-8}{x-2} \) value of \( n(x) \)

3. Determine \( o \) valor exato de: 3.1. \( \arcsin \left(\frac{\sqrt{2}}{2}\right)-\arcsin \left(-\frac{\sqrt{3}}{2}\right) \)