Craig is modeling the discovery of electromagnetism. Which procedure should he use? moving a magnet into a coil of wire in a closed circuit
moving a magnet into a coil of wire in an open circuit
bringing a compass near a wire that has no electric current
bringing a compass near a wire that has an electric current

Ineed the answer to question 1 , i’m desperate

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?

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?