A brother and sister are standing next to each other on a bridge. The brother is 50 kg and has 4000 J of gravitational potential energy. How much gravitational potential energy would his 25 kg sister have?

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What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

Answer it was we, the the whole people, who formed the union. and we formed it, not to give the blessings of liberty, but to secure them: not to the half of ourselves and the half of our posterity, but to the whole people- women as well as men.