Areaction where one element takes the place of another element in a compound is an example of which type of reaction?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

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