Assume that the scoop shown, which is 20 cm wide, is used as
a braking device for studying
deceleration effects, such as those on
space vehicles. If the scoop is attached
to a 1000-kg sled that is initially
traveling horizontally at the rate of 100
m/s, what will be the initial deceleration
of the sled? The scoop dips into the
water 8 cm (d = 8 cm). (T = 10°C.)

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?