The volume of an iceberg is 520,000 ft3. (a) What is its weight (in lb), assuming it is pure ice? (Round your answer to at least four significant figures.) Incorrect: Your answer is incorrect. lb (b) What is the volume of seawater (in ft3) it displaces when floating? (Hint: You know what the weight of the seawater is. Round your answer to at least three significant figures.) Incorrect: Your answer is incorrect. ft3 (c) What is the volume of the part of the iceberg out of the water (in ft3)? Incorrect: Your answer is incorrect. ft3