A liquid of density 1258 kg/m3 flows with speed 1 m/s into a pipe of diameter 0.26 m. The diameter of the pipe decreases to 0.05 m at its exit end. The exit end of the pipe is 5.48 m lower than the entrance of the pipe, and the pressure at the exit of the pipe is 1 atm.
Applying Bernoulli’s principle, what is the pressure P1 at the entrance end of the pipe?