how fast does something need to be thrown with horizontal velocity to remain in orbit assuming you know the diameter of earth and gravitty

Drag each item into the proper state of matter category.

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?