I need your help to solve these problems. Pls help me by answering and showing explanations.

Problem 1 (2 points each, 14 points total) For the following questions, circle the best answer: 1. The Reynolds number represents the ratio of to forces. (a) inertial, gravitational (b) gravitational, frictional (c) gravitational, pressure (d) inertial, frictional (e) inertial, pressure (f) pressure, frictional 2. True or false: for laminar flow, head losses depend on the roughness of the pipe wall. (a) True (b) False 3. The hydraulic grade line (HGL) includes which of the following terms? (Circle all that apply). (a) Pressure head (b) Velocity head () Elevation head 4. The energy grade line (EGL) includes which of the following terms? (Circle all that apply). (a) Pressure head (b) Velocity head (c) Elevation head 5. For pressurized flow in a pipe with a constant diameter, the slope of the EGL will be the slope of HGL. (a) Steeper than (b) Equal to (c) Shallower than (d) Not enough information 6. Pressurized flow in a pipe undergoes a sudden contraction. Following the contraction, the distance between the HGL and EGL (a) Increases (b) Decreases (c) Stays the same (d) Not enough information 7. For flow in a pressurized pipe, which of the following changes will increase the head losses? (Assume changes are independent of one another, and circle all that apply). (a) Increase flow velocity (b) Increase pipe diameter () Install an inline valve (d) Increase pipe length (e) Install a bend in the pipe (f) Increase pressure while keeping constant flow rate