If the outer diameter and inner diameter of a hollow sphere are x and y respectively, then the rectangle of the solid part of the hollow sphere is...

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to from a solid cylinder of height 2""2/3cm . Find the diameter and the curved surface area of the cylinder.

The diameter and thickness of a hollow metal sphere are 12 cm and 0.01 m respectively. The density of the metal is 8.88 gm per cm^(2) . Find the outer surface area and mass of the sphere. [pi = 3.14]

Consider two concentric conducting spheres. The outer sphere is hollow and initially has a charge -7Q on it. The inner sphere is solid and has a charge +2Q on it. a. How much charge is on the outer surface and inner surface of the outer sphere. b. If a wire is connected between the inner and outer sphere, after electrostatic equilibrium is established how much total charge is on the outer sphere? How much charge is on the outer surface and inner surface of the outer sphere? Does the electric field at the surface of the inside sphere change when the wire is connected? c. We return to original condition in (a). We now connect the outer sphere to ground with a wire and then disconnect it. How much total charge will be on the outer sphere? How much charge will be on the inner surface and outer surface of the outer sphere?

The diameter of two hollow sphere made from the same metal sheet are 21 cm and 17.5 cm respectively. The ratio of the area of metal sheets required for making the two sphere is

A hollow cylindrical pipe is 21dm long.It outer and inner diameters are 10cm and 6cm respectively.Find the volume of the copper used in making the pipe.

The moment of inertia of two spheres of equal masses about their diameters are equal. If one of them is solid and the other is hollow, then the ratio of their radii is [M.I. of hollow sphere = (2)/(3)MR_(h)^(2) ]

Electric field due to solid & Hollow sphere || Graphs