Katie traveled southwest a distance of 4000m on a bicycle in 5400s. what is her velocity? (speed = distance / time)

.074m/s

1.35m/s sw

1.11m/s sw

.74 m/s sw

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.