These objects switch from one type of their namesake property to another at the Curie temperature.
Earnshaw's theorem applies to these objects, stating that no arrangement of them will result in a stationary equilibrium of charge. Like the gravitational force, the force between two of these objects decreases proportionally to r squared. These objects switch from one type of their namesake property to another at the Curie temperature. Their strength is measured in Teslas, and permanent ones create a constant namesake field. For 10 points, name these objects that are commonly bar shaped or U-shaped and can be found on many refrigerators.
Earnshaw's theorem applies to these objects, stating that no arrangement of them will result in a stationary equilibrium of charge.
magnets [accept all specific types of magnets before "Curie," and accept only magnet after]