Consider lifting potential flow around a spinning circular cylinder of radius r put in uniform flow with a velocity magnitude ofv[infinity]. if the circulation around the cylinder is γ = 2πv[infinity]r, (a)find the locations of the stagnation points, (b) determine and plot (with computer) the pressure coefficient distribution on the surface of the cylinder, and (c) calculate the lift and the drag coefficients.

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

Select the correct answer. what does the process of natural selection involve?