Question: Problem 1: A U-shaped tube (open at both ends) is filled with some water and some oil - see the figure below. Which is

Problem 1: A U-shaped tube (open at both ends) is filled with some water and some oil - see the figure below. Which is the true statement: (a) PA < PB (b) PA = PB (c) PA> PB oil A. B water Problem 2: What is a Carnot engine? Why is it important?

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