a solid, uniform disk of mass m and radius a may be rotated about any axis parallel to the disk axis, at variable distances from the center of the disk.

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

What is a carrier wave and how does it affect what you hear on the radio

Often called simply "velocity," this is the velocity of an object at a particular moment in time.