6. (12 pts) A constant force FT 20 N is applied tangentially at the outer edge of a solid disk of mass M 3.0 kg and radius R 0.50 meters, accelerating it from rest to an angular velocity of 2.5 revolutions per second. Then, a small block of mass m 10.0 kg is thrown 2.0 m/s towards the disk, along the trajectory shown in the figure. It is with ... Jan 02, 2011 · The above model is equivalent to a co-axial porous spherical shell enclosing the impermeable core. Further, we assume that, this porous shell is enveloped by a concentric sphere of radius, named as cell surface (Figure-2). The Stokes flow of a Newtonian fluid with absolute fluid viscosity is assumed to be steady and axi-symmetric. Apr 13, 2009 · Consider one such shell with radius r. So. volume of the spherical shell = 4πr^2 dr. Amount of charge on this shell. dq = volume*charge density = 4πr^2 ρ1 (r/R) dr. Integrate from r = 0 to r = R: Q = π(ρ1)(R^3) b) Let the electric field at a distance r from the center be E. Consider a Gaussian Surface t o be a sphere of radius r. A sphere is a perfectly round geometrical object in 3D space. The points on its surface are equally distant from the center of a sphere. It is an analogue to a circle in 2D space. Radius of a sphere calculator uses five variables that can completely describe any sphere: r - radius of a sphere, d - diameter of a sphere, V - volume of a sphere,