In an electric motor, periodically changing the direction of current in the electromagnet can cause the axle to spin because

Why is the melting of ice a physical change ?

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds