1. Air is supplied to a straight length of constant diameter pipe
through a  bell mouth entrance and is discharge through a diffuser to
the atmosphere

Operating data are as follows: 
                               
          M1 = 0.02, P 01(stagnation state) = 10 atm, A2/A1 = 0.0625
  length,L = 15m, D = 0.25m, f = 0.005


 Assuming isentropic flow through the entrance and the diffuser and
the adiabatic flow through the pipe,determine the exit Mach number,M4.

NOTE :  SORRY I COULD'NT DRAW THE PICTURE FOR HERE. BUT STILL I WILL
EXPLAIN THE FIGURE.
    1. THERE ARE 4 SECTIONS 
         a. FIRST ONE,ENTRANCE SECTION,WHICH IS CONVERGENT PASSAGE.
         b. SECOND AND THIRD ARE THROAT SECTION, I MEAN AT THE
ENTRANCE OF THROAT AND EXIT OF THE THROAT. THATS WHY THE LENGTH AND
DIAMETER OF THROAT ARE MENTIONED IN THE PROBLEM.
         c. LAST ONE IS EXIT SECTION WHERE WE NEED TO FINE THE MACH
NUMBER.
 
NOTE: i want the answer in one day.i hope i will get the answer for
this problem.i will eagerly
wait for the reply.