pls help me do Part A and Part B and Part C in detail and clear writing plss

Engine oil at 25C flows horizontally through a 15cm diameter pipe with a pressure drop of 10kPa along a 2m length pipe, as shown in Figure 3. (a) Determine i) the flow rate, in m3/s, ii) the velocity, in m/s iii) Reynolds number and flow regime flowing in the pipe, iv) friction factor in the pipe, v) the head loss, vi) the pumping power required to overcome this pressure drop, and vii) the hydrodynamic entry length of this flow. (b) If the pressure drop of horizontal pipe in Question 3 (a) is increased to 100kPa, calculate i) Reynolds number and flow regime of the flow in pipe, and ii) the hydrodynamic entry length of this flow. (c) For both Question 3 (a) and (b), illustrate the velocity profile a along the flow for each flow regime. Then, in your sketch, specify the entrance and fully developed region