Adistance between two consecutive troughs in a wave motion train produced in a string is 5 cm. find speed of wave , if two complete waves pass through any point per second

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices

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

How does the formation of intrusive and extrusive igneous rocks differ?