Please help Select the correct text in the passage.
Identify the verb phrase in the paragraph.

Space travel has always been a fascinating subject. For centuries, humans have dreamed of sending missions into space to discover the dark corners of the universe. Now, technology can finally help us fulfill this dream.

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.