Hinge is a joint. It is designed to join two 'arms' together while letting them move freely. A lever is when a pivot, load, effort is present. Although hinge itself is not a lever, but taking our biceps as an example, that would be a Class 3 lever.
Physical properties. Tungsten is a hard brittle solid whose color ranges from steel-gray to nearly white. Its melting point is the highest of any metal, 3,410Â°C (6,170Â°F) and its boiling point is about 5,900Â°C (10,600Â°F). Its density is about 19.3 grams per cubic centimeter. Tungsten conducts electrical current very well.
Mr. Jennifer isnât alone. One groomâs tungsten carbide ring shattered at his wedding reception when his hand hit the ground while he was dancing. Others have shattered when dropped on the floor, like Mr. Jenniferâs band. One jeweler made this instructional video to show customers why they shouldnât drop their tungsten rings: