The vibrations along a longitudinal wave move in a direction . a. both along and perpendicular to the wave b. along the wave c. perpendicular to the wave d. None of the other answers

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil