Why does a light go out when you turn off the wall switch?
a. the switch changes the direction of the flow of electrons.
b. the switch causes a break in the circuit.
c. the switch changes the circuit from series to parallel.
d. the switch absorbs the electrical energy.

At what point the certain object feels zero garvitational force between earth and the moon. take the required information from the book.required: distance away from earth or moon

How do we measure or think of speed in the united states?

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?