You push your textbook 1.5 m along a horizontal tabletop with a horizontal push of 2.4 n while the opposing force of friction is 0.6 n. what is the net work done on the book?

In what direction does the medium move relative to the direction of the wave? explain.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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?