An elephant has a mass of 4000 kg goes to the moon to participate in the Elephant Olympics. What is the elephant's gravitational potential energy if it stood on a
3meter diving board while waiting for its turn? (hint: The moon has 1/6 of the
earth's gravity)

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.