For each item ahead, which -group (R e , W e , M, or F r )

For each item ahead, which π-group (R_e, W_e, M, or F_r) would best match the given description?

a. (kinetic force)/(surface-tension force)

b. (kinetic force)/(viscous force)

c. (kinetic force)/(gravitational force)

d. (kinetic force)/(compressive force)

e. Used for modeling water flowing over a spillway on a dam

f. Used for designing laser jet printers

g. Used for analyzing the drag on a car in a wind tunnel

h. Used to analyze the flight of supersonic jets