Consider a straight wire 200 meters long, which is uniformly charged with 103 esu per centimeter of length, running parallel to the earth at a height of 5 meters. What is the field strength at the surface of the earth, immediately below the wire

Which atomic model was proposed as a result of j. j. thomson’s work?

Observations show that interstellar clouds can have almost any shape and

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?