13.88 m/s

13.9 m/s

13.8 m/s

13.888 m/s

Increase the current supplied

Increase the number of coils around the electromagnet

Use steel as the core metal of the magnet

Use iron as the core metal of the magnet

The reaction of Hydrogen molecules in the Sun to form Helium atoms

The breakdown of Uranium atoms to Krypton and Barium in nuclear power stations